Update README.md

Update README.md

.github/workflows/python-publish.yml

@@ -0,0 +1,40 @@
+# This workflow will upload a Python Package using Twine when a release is created
+# For more information see: https://docs.github.com/en/actions/automating-builds-and-tests/building-and-testing-python#publishing-to-package-registries
+
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
+name: Upload Python Package
+
+on:
+  push:
+    tags:        
+      - '*'   
+
+permissions:
+  contents: read
+
+jobs:
+  deploy:
+
+    runs-on: ubuntu-latest
+
+    steps:
+    - uses: actions/checkout@v4
+    - name: Set up Python
+      uses: actions/setup-python@v3
+      with:
+        python-version: '3.x'
+    - name: Install dependencies
+      run: |
+        python -m pip install --upgrade pip
+        pip install build
+    - name: Build package
+      run: python -m build
+    - name: Publish package
+      uses: pypa/gh-action-pypi-publish@27b31702a0e7fc50959f5ad993c78deac1bdfc29
+      with:
+        user: __token__
+        password: ${{ secrets.PYPI_API_TOKEN }}

README.md

@@ -10,22 +10,77 @@
 
 **Silero VAD** - pre-trained enterprise-grade [Voice Activity Detector](https://en.wikipedia.org/wiki/Voice_activity_detection) (also see our [STT models](https://github.com/snakers4/silero-models)).
 
-This repository also includes Number Detector and Language classifier [models](https://github.com/snakers4/silero-vad/wiki/Other-Models)
-
 <br/>
 
 <p align="center">
-  <img src="https://user-images.githubusercontent.com/36505480/198026365-8da383e0-5398-4a12-b7f8-22c2c0059512.png" />
+  <img src="https://github.com/snakers4/silero-vad/assets/36505480/300bd062-4da5-4f19-9736-9c144a45d7a7" />
 </p>
 
+
 <details>
 <summary>Real Time Example</summary>
-  
+
 https://user-images.githubusercontent.com/36505480/144874384-95f80f6d-a4f1-42cc-9be7-004c891dd481.mp4
-  
+
 </details>
 
 <br/>
+
+<h2 align="center">Fast start</h2>
+<br/>
+
+<details>
+<summary>Dependencies</summary>
+
+  System requirements to run python examples on `x86-64` systems:
+  
+  - `python 3.8+`;
+  - 1G+ RAM;
+  - A modern CPU with AVX, AVX2, AVX-512 or AMX instruction sets.
+
+  Dependencies:
+  
+  - `torch>=1.12.0`;
+  - `torchaudio>=0.12.0` (for I/O functionalities only);
+  - `onnxruntime>=1.16.1` (for ONNX model usage).
+  
+  Silero VAD uses torchaudio library for audio I/O (`torchaudio.info`, `torchaudio.load`, and `torchaudio.save`), so a proper audio backend is required:
+  
+  - Option №1 - [**FFmpeg**](https://www.ffmpeg.org/) backend. `conda install -c conda-forge 'ffmpeg<7'`;
+  - Option №2 - [**sox_io**](https://pypi.org/project/sox/) backend. `apt-get install sox`, TorchAudio is tested on libsox 14.4.2;
+  - Option №3 - [**soundfile**](https://pypi.org/project/soundfile/) backend. `pip install soundfile`.
+
+If you are planning to run the VAD using solely the `onnx-runtime`, it will run on any other system architectures where onnx-runtume is [supported](https://onnxruntime.ai/getting-started). In this case please note that:
+
+- You will have to impolement the I/O;
+- You will have to adapt the existing wrappers / examples / post-processing for your use-case.
+
+</details>
+
+**Using pip**:
+`pip install silero-vad`
+
+```python3
+from silero_vad import load_silero_vad, read_audio, get_speech_timestamps
+model = load_silero_vad()
+wav = read_audio('path_to_audio_file')
+speech_timestamps = get_speech_timestamps(wav, model)
+```
+
+**Using torch.hub**:
+```python3
+import torch
+torch.set_num_threads(1)
+
+model, utils = torch.hub.load(repo_or_dir='snakers4/silero-vad', model='silero_vad')
+(get_speech_timestamps, _, read_audio, _, _) = utils
+
+wav = read_audio('path_to_audio_file')
+speech_timestamps = get_speech_timestamps(wav, model)
+```
+
+<br/>
+
 <h2 align="center">Key Features</h2>
 <br/>
 
@@ -39,20 +94,16 @@ https://user-images.githubusercontent.com/36505480/144874384-95f80f6d-a4f1-42cc-
 
 - **Lightweight**
 
-  JIT model is around one megabyte in size.
+  JIT model is around two megabytes in size.
 
 - **General**
 
-  Silero VAD was trained on huge corpora that include over **100** languages and it performs well on audios from different domains with various background noise and quality levels.
+  Silero VAD was trained on huge corpora that include over **6000** languages and it performs well on audios from different domains with various background noise and quality levels.
 
 - **Flexible sampling rate**
 
   Silero VAD [supports](https://github.com/snakers4/silero-vad/wiki/Quality-Metrics#sample-rate-comparison)  **8000 Hz** and **16000 Hz** [sampling rates](https://en.wikipedia.org/wiki/Sampling_(signal_processing)#Sampling_rate).
 
-- **Flexible chunk size**
-
-  Model was trained on **30 ms**. Longer chunks are supported directly, others may work as well.
-
 - **Highly Portable**
 
   Silero VAD reaps benefits from the rich ecosystems built around **PyTorch** and **ONNX** running everywhere where these runtimes are available.
@@ -62,6 +113,7 @@ https://user-images.githubusercontent.com/36505480/144874384-95f80f6d-a4f1-42cc-
    Published under permissive license (MIT) Silero VAD has zero strings attached - no telemetry, no keys, no registration, no built-in expiration, no keys or vendor lock.
 
 <br/>
+
 <h2 align="center">Typical Use Cases</h2>
 <br/>
 
@@ -78,7 +130,6 @@ https://user-images.githubusercontent.com/36505480/144874384-95f80f6d-a4f1-42cc-
 - [Examples and Dependencies](https://github.com/snakers4/silero-vad/wiki/Examples-and-Dependencies#dependencies)
 - [Quality Metrics](https://github.com/snakers4/silero-vad/wiki/Quality-Metrics)
 - [Performance Metrics](https://github.com/snakers4/silero-vad/wiki/Performance-Metrics)
-- [Number Detector and Language classifier models](https://github.com/snakers4/silero-vad/wiki/Other-Models)
 - [Versions and Available Models](https://github.com/snakers4/silero-vad/wiki/Version-history-and-Available-Models)
 - [Further reading](https://github.com/snakers4/silero-models#further-reading)
 - [FAQ](https://github.com/snakers4/silero-vad/wiki/FAQ)
@@ -89,7 +140,7 @@ https://user-images.githubusercontent.com/36505480/144874384-95f80f6d-a4f1-42cc-
 
 Try our models, create an [issue](https://github.com/snakers4/silero-vad/issues/new), start a [discussion](https://github.com/snakers4/silero-vad/discussions/new), join our telegram [chat](https://t.me/silero_speech), [email](mailto:hello@silero.ai) us, read our [news](https://t.me/silero_news).
 
-Please see our [wiki](https://github.com/snakers4/silero-models/wiki) and [tiers](https://github.com/snakers4/silero-models/wiki/Licensing-and-Tiers) for relevant information and [email](mailto:hello@silero.ai) us directly.
+Please see our [wiki](https://github.com/snakers4/silero-models/wiki) for relevant information and [email](mailto:hello@silero.ai) us directly.
 
 **Citations**
 
@@ -97,7 +148,7 @@ Please see our [wiki](https://github.com/snakers4/silero-models/wiki) and [tiers
 @misc{Silero VAD,
   author = {Silero Team},
   title = {Silero VAD: pre-trained enterprise-grade Voice Activity Detector (VAD), Number Detector and Language Classifier},
-  year = {2021},
+  year = {2024},
   publisher = {GitHub},
   journal = {GitHub repository},
   howpublished = {\url{https://github.com/snakers4/silero-vad}},
@@ -107,7 +158,11 @@ Please see our [wiki](https://github.com/snakers4/silero-models/wiki) and [tiers
 ```
 
 <br/>
-<h2 align="center">VAD-based Community Apps</h2>
+<h2 align="center">Examples and VAD-based Community Apps</h2>
 <br/>
 
-- Voice activity detection for the [browser](https://github.com/ricky0123/vad) using ONNX Runtime Web 
+- Example of VAD ONNX Runtime model usage in [C++](https://github.com/snakers4/silero-vad/tree/master/examples/cpp) 
+
+- Voice activity detection for the [browser](https://github.com/ricky0123/vad) using ONNX Runtime Web
+
+- [Rust](https://github.com/snakers4/silero-vad/tree/master/examples/rust-example), [Go](https://github.com/snakers4/silero-vad/tree/master/examples/go), [Java](https://github.com/snakers4/silero-vad/tree/master/examples/java-example) and [other](https://github.com/snakers4/silero-vad/tree/master/examples) examples

datasets/README.md

@@ -0,0 +1,84 @@
+# Датасет Silero-VAD
+
+> Датасет создан при поддержке Фонда содействия инновациям в рамках федерального проекта «Искусственный
+интеллект» национальной программы «Цифровая экономика Российской Федерации».
+
+По ссылкам ниже представлены `.feather` файлы, содержащие размеченные с помощью Silero VAD открытые наборы аудиоданных, а также короткое описание каждого набора данных с примерами загрузки. `.feather` файлы можно открыть с помощью библиотеки `pandas`:
+```python3
+import pandas as pd
+dataframe = pd.read_feather(PATH_TO_FEATHER_FILE)
+```
+
+Каждый `.feather` файл с разметкой содержит следующие колонки:
+- `speech_timings` - разметка данного аудио. Это список, содержащий словари вида `{'start': START_SECOND, 'end': END_SECOND}`, где `START_SECOND` и `END_SECOND` - время начала и конца речи в секундах. Количество данных словарей равно количеству речевых аудио отрывков, найденных в данном аудио;
+- `language` - ISO код языка данного аудио.
+
+Колонки, содержащие информацию о загрузке аудио файла различаются и описаны для каждого набора данных ниже.
+
+**Все данные размечены при временной дискретизации в ~30 миллисекунд (`num_samples` - 512)**
+
+| Название             | Число часов | Число языков | Ссылка | Лицензия | md5sum |
+|----------------------|-------------|-------------|--------|----------|----------|
+| **Bible.is**             | 53,138       | 1,596        |    [URL](https://live.bible.is/)    |    [Уникальная](https://live.bible.is/terms)      | ea404eeaf2cd283b8223f63002be11f9 |
+| **globalrecordings.net** | 9,743        | 6,171[^1]       |    [URL](https://globalrecordings.net/en)    |    CC BY-NC-SA 4.0      | 3c5c0f31b0abd9fe94ddbe8b1e2eb326 |
+| **VoxLingua107**         | 6,628        | 107         |    [URL](https://bark.phon.ioc.ee/voxlingua107/)    |     CC BY 4.0     | 5dfef33b4d091b6d399cfaf3d05f2140 |
+| **Common Voice**         | 30,329       | 120         |    [URL](https://commonvoice.mozilla.org/en/datasets)    |     CC0     | 5e30a85126adf74a5fd1496e6ac8695d |
+| **MLS**                  | 50,709       | 8           |    [URL](https://www.openslr.org/94/)    |    CC BY 4.0      | a339d0e94bdf41bba3c003756254ac4e |
+| **Итого**                  | **150,547**       | **6,171+**         |     |    |  |
+
+## Bible.is
+
+[Ссылка на `.feather` файл с разметкой](https://models.silero.ai/vad_datasets/BibleIs.feather)
+
+- Колонка `audio_link` содержит ссылки на конкретные аудио файлы.
+
+## globalrecordings.net
+
+[Ссылка на `.feather` файл с разметкой](https://models.silero.ai/vad_datasets/globalrecordings.feather)
+
+- Колонка `folder_link` содержит ссылки на скачивание `.zip` архива для конкретного языка. Внимание! Ссылки на архивы дублируются, т.к каждый архив может содержать множество аудио.
+- Колонка `audio_path` содержит пути до конкретного аудио после распаковки соответствующего архива из колонки `folder_link`
+
+``Количество уникальных ISO кодов данного датасета не совпадает с фактическим количеством представленных языков, т.к некоторые близкие языки могут кодироваться одним и тем же ISO кодом.``
+
+## VoxLingua107
+
+[Ссылка на `.feather` файл с разметкой](https://models.silero.ai/vad_datasets/VoxLingua107.feather)
+
+- Колонка `folder_link` содержит ссылки на скачивание `.zip` архива для конкретного языка. Внимание! Ссылки на архивы дублируются, т.к каждый архив может содержать множество аудио.
+- Колонка `audio_path` содержит пути до конкретного аудио после распаковки соответствующего архива из колонки `folder_link`
+
+## Common Voice
+
+[Ссылка на `.feather` файл с разметкой](https://models.silero.ai/vad_datasets/common_voice.feather)
+
+Этот датасет невозможно скачать по статичным ссылкам. Для загрузки необходимо перейти по [ссылке](https://commonvoice.mozilla.org/en/datasets) и, получив доступ в соответствующей форме, скачать архивы для каждого доступного языка. Внимание! Представленная разметка актуальна для версии исходного датасета `Common Voice Corpus 16.1`.
+
+- Колонка `audio_path` содержит уникальные названия `.mp3` файлов, полученных после скачивания соответствующего датасета.
+
+## MLS
+
+[Ссылка на `.feather` файл с разметкой](https://models.silero.ai/vad_datasets/MLS.feather)
+
+- Колонка `folder_link` содержит ссылки на скачивание `.zip` архива для конкретного языка. Внимание! Ссылки на архивы дублируются, т.к каждый архив может содержать множество аудио.
+- Колонка `audio_path` содержит пути до конкретного аудио после распаковки соответствующего архива из колонки `folder_link`
+
+## Лицензия
+
+Данный датасет распространяется под [лицензией](https://creativecommons.org/licenses/by-nc-sa/4.0/deed.en) `CC BY-NC-SA 4.0`.
+
+## Цитирование
+
+```
+@misc{Silero VAD Dataset,
+  author = {Silero Team},
+  title = {Silero-VAD Dataset: a large public Internet-scale dataset for voice activity detection for 6000+ languages},
+  year = {2024},
+  publisher = {GitHub},
+  journal = {GitHub repository},
+  howpublished = {\url{https://github.com/snakers4/silero-vad/datasets/README.md}},
+  email = {hello@silero.ai}
+}
+```
+
+[^1]: ``Количество уникальных ISO кодов данного датасета не совпадает с фактическим количеством представленных языков, т.к некоторые близкие языки могут кодироваться одним и тем же ISO кодом.``

examples/colab_record_example.ipynb

@@ -41,7 +41,7 @@
     "    abs_max = np.abs(sound).max()\n",
     "    sound = sound.astype('float32')\n",
     "    if abs_max > 0:\n",
-    "        sound *= 1/abs_max\n",
+    "        sound *= 1/32768\n",
     "    sound = sound.squeeze()\n",
     "    return sound\n",
     "\n",

examples/cpp/README.md

@@ -0,0 +1,43 @@
+# Stream example in C++
+
+Here's a simple example of the vad model in c++ onnxruntime.
+
+
+
+## Requirements
+
+Code are tested in the environments bellow, feel free to try others.
+
+- WSL2 + Debian-bullseye (docker)  
+- gcc 12.2.0
+- onnxruntime-linux-x64-1.12.1
+
+
+
+## Usage
+
+1. Install gcc 12.2.0, or just pull the docker image with `docker pull gcc:12.2.0-bullseye`
+
+2. Install onnxruntime-linux-x64-1.12.1
+
+   - Download lib onnxruntime: 
+
+     `wget https://github.com/microsoft/onnxruntime/releases/download/v1.12.1/onnxruntime-linux-x64-1.12.1.tgz`
+
+   - Unzip. Assume the path is `/root/onnxruntime-linux-x64-1.12.1`
+
+3. Modify wav path & Test configs in main function
+
+   `wav::WavReader wav_reader("${path_to_your_wav_file}");`
+
+   test sample rate, frame per ms, threshold...
+
+4. Build with gcc and run
+
+   ```bash
+   # Build
+   g++ silero-vad-onnx.cpp -I /root/onnxruntime-linux-x64-1.12.1/include/ -L /root/onnxruntime-linux-x64-1.12.1/lib/ -lonnxruntime  -Wl,-rpath,/root/onnxruntime-linux-x64-1.12.1/lib/ -o test
+   
+   # Run
+   ./test
+   ```

examples/cpp/silero-vad-onnx.cpp

@@ -0,0 +1,478 @@
+#include <iostream>
+#include <vector>
+#include <sstream>
+#include <cstring>
+#include <limits>
+#include <chrono>
+#include <memory>
+#include <string>
+#include <stdexcept>
+#include <iostream>
+#include <string>
+#include "onnxruntime_cxx_api.h"
+#include "wav.h"
+#include <cstdio>
+#include <cstdarg>
+#if __cplusplus < 201703L
+#include <memory>
+#endif
+
+//#define __DEBUG_SPEECH_PROB___
+
+class timestamp_t
+{
+public:
+    int start;
+    int end;
+
+    // default + parameterized constructor
+    timestamp_t(int start = -1, int end = -1)
+        : start(start), end(end)
+    {
+    };
+
+    // assignment operator modifies object, therefore non-const
+    timestamp_t& operator=(const timestamp_t& a)
+    {
+        start = a.start;
+        end = a.end;
+        return *this;
+    };
+
+    // equality comparison. doesn't modify object. therefore const.
+    bool operator==(const timestamp_t& a) const
+    {
+        return (start == a.start && end == a.end);
+    };
+    std::string c_str()
+    {
+        //return std::format("timestamp {:08d}, {:08d}", start, end);
+        return format("{start:%08d,end:%08d}", start, end);
+    };
+private:
+
+    std::string format(const char* fmt, ...)
+    {
+        char buf[256];
+
+        va_list args;
+        va_start(args, fmt);
+        const auto r = std::vsnprintf(buf, sizeof buf, fmt, args);
+        va_end(args);
+
+        if (r < 0)
+            // conversion failed
+            return {};
+
+        const size_t len = r;
+        if (len < sizeof buf)
+            // we fit in the buffer
+            return { buf, len };
+
+#if __cplusplus >= 201703L
+        // C++17: Create a string and write to its underlying array
+        std::string s(len, '\0');
+        va_start(args, fmt);
+        std::vsnprintf(s.data(), len + 1, fmt, args);
+        va_end(args);
+
+        return s;
+#else
+        // C++11 or C++14: We need to allocate scratch memory
+        auto vbuf = std::unique_ptr<char[]>(new char[len + 1]);
+        va_start(args, fmt);
+        std::vsnprintf(vbuf.get(), len + 1, fmt, args);
+        va_end(args);
+
+        return { vbuf.get(), len };
+#endif
+    };
+};
+
+
+class VadIterator
+{
+private:
+    // OnnxRuntime resources
+    Ort::Env env;
+    Ort::SessionOptions session_options;
+    std::shared_ptr<Ort::Session> session = nullptr;
+    Ort::AllocatorWithDefaultOptions allocator;
+    Ort::MemoryInfo memory_info = Ort::MemoryInfo::CreateCpu(OrtArenaAllocator, OrtMemTypeCPU);
+
+private:
+    void init_engine_threads(int inter_threads, int intra_threads)
+    {
+        // The method should be called in each thread/proc in multi-thread/proc work
+        session_options.SetIntraOpNumThreads(intra_threads);
+        session_options.SetInterOpNumThreads(inter_threads);
+        session_options.SetGraphOptimizationLevel(GraphOptimizationLevel::ORT_ENABLE_ALL);
+    };
+
+    void init_onnx_model(const std::wstring& model_path)
+    {
+        // Init threads = 1 for 
+        init_engine_threads(1, 1);
+        // Load model
+        session = std::make_shared<Ort::Session>(env, model_path.c_str(), session_options);
+    };
+
+    void reset_states()
+    {
+        // Call reset before each audio start
+        std::memset(_state.data(), 0.0f, _state.size() * sizeof(float));
+        triggered = false;
+        temp_end = 0;
+        current_sample = 0;
+
+        prev_end = next_start = 0;
+
+        speeches.clear();
+        current_speech = timestamp_t();
+    };
+
+    void predict(const std::vector<float> &data)
+    {
+        // Infer
+        // Create ort tensors
+        input.assign(data.begin(), data.end());
+        Ort::Value input_ort = Ort::Value::CreateTensor<float>(
+            memory_info, input.data(), input.size(), input_node_dims, 2);
+        Ort::Value state_ort = Ort::Value::CreateTensor<float>(
+            memory_info, _state.data(), _state.size(), state_node_dims, 3);
+        Ort::Value sr_ort = Ort::Value::CreateTensor<int64_t>(
+            memory_info, sr.data(), sr.size(), sr_node_dims, 1);
+
+        // Clear and add inputs
+        ort_inputs.clear();
+        ort_inputs.emplace_back(std::move(input_ort));
+        ort_inputs.emplace_back(std::move(state_ort));
+        ort_inputs.emplace_back(std::move(sr_ort));
+
+        // Infer
+        ort_outputs = session->Run(
+            Ort::RunOptions{nullptr},
+            input_node_names.data(), ort_inputs.data(), ort_inputs.size(),
+            output_node_names.data(), output_node_names.size());
+
+        // Output probability & update h,c recursively
+        float speech_prob = ort_outputs[0].GetTensorMutableData<float>()[0];
+        float *stateN = ort_outputs[1].GetTensorMutableData<float>();
+        std::memcpy(_state.data(), stateN, size_state * sizeof(float));
+
+        // Push forward sample index
+        current_sample += window_size_samples;
+
+        // Reset temp_end when > threshold 
+        if ((speech_prob >= threshold))
+        {
+#ifdef __DEBUG_SPEECH_PROB___
+            float speech = current_sample - window_size_samples; // minus window_size_samples to get precise start time point.
+            printf("{    start: %.3f s (%.3f) %08d}\n", 1.0 * speech / sample_rate, speech_prob, current_sample- window_size_samples);
+#endif //__DEBUG_SPEECH_PROB___
+            if (temp_end != 0)
+            {
+                temp_end = 0;
+                if (next_start < prev_end)
+                    next_start = current_sample - window_size_samples;
+            }
+            if (triggered == false)
+            {
+                triggered = true;
+
+                current_speech.start = current_sample - window_size_samples;
+            }
+            return;
+        }
+
+        if (
+            (triggered == true)
+            && ((current_sample - current_speech.start) > max_speech_samples)
+            ) {
+            if (prev_end > 0) {
+                current_speech.end = prev_end;
+                speeches.push_back(current_speech);
+                current_speech = timestamp_t();
+                
+                // previously reached silence(< neg_thres) and is still not speech(< thres)
+                if (next_start < prev_end)
+                    triggered = false;
+                else{
+                    current_speech.start = next_start;
+                }
+                prev_end = 0;
+                next_start = 0;
+                temp_end = 0;
+
+            }
+            else{ 
+                current_speech.end = current_sample;
+                speeches.push_back(current_speech);
+                current_speech = timestamp_t();
+                prev_end = 0;
+                next_start = 0;
+                temp_end = 0;
+                triggered = false;
+            }
+            return;
+
+        }
+        if ((speech_prob >= (threshold - 0.15)) && (speech_prob < threshold))
+        {
+            if (triggered) {
+#ifdef __DEBUG_SPEECH_PROB___
+                float speech = current_sample - window_size_samples; // minus window_size_samples to get precise start time point.
+                printf("{ speeking: %.3f s (%.3f) %08d}\n", 1.0 * speech / sample_rate, speech_prob, current_sample - window_size_samples);
+#endif //__DEBUG_SPEECH_PROB___
+            }
+            else {
+#ifdef __DEBUG_SPEECH_PROB___
+                float speech = current_sample - window_size_samples; // minus window_size_samples to get precise start time point.
+                printf("{  silence: %.3f s (%.3f) %08d}\n", 1.0 * speech / sample_rate, speech_prob, current_sample - window_size_samples);
+#endif //__DEBUG_SPEECH_PROB___
+            }
+            return;
+        }
+
+
+        // 4) End 
+        if ((speech_prob < (threshold - 0.15)))
+        {
+#ifdef __DEBUG_SPEECH_PROB___
+            float speech = current_sample - window_size_samples - speech_pad_samples; // minus window_size_samples to get precise start time point.
+            printf("{      end: %.3f s (%.3f) %08d}\n", 1.0 * speech / sample_rate, speech_prob, current_sample - window_size_samples);
+#endif //__DEBUG_SPEECH_PROB___
+            if (triggered == true)
+            {
+                if (temp_end == 0)
+                {
+                    temp_end = current_sample;
+                }
+                if (current_sample - temp_end > min_silence_samples_at_max_speech)
+                    prev_end = temp_end;
+                // a. silence < min_slience_samples, continue speaking 
+                if ((current_sample - temp_end) < min_silence_samples)
+                {
+
+                }
+                // b. silence >= min_slience_samples, end speaking
+                else
+                {
+                    current_speech.end = temp_end;
+                    if (current_speech.end - current_speech.start > min_speech_samples)
+                    {
+                        speeches.push_back(current_speech);
+                        current_speech = timestamp_t();
+                        prev_end = 0;
+                        next_start = 0;
+                        temp_end = 0;
+                        triggered = false;
+                    }
+                }
+            }
+            else {
+                // may first windows see end state.
+            }
+            return;
+        }
+    };
+public:
+    void process(const std::vector<float>& input_wav)
+    {
+        reset_states();
+
+        audio_length_samples = input_wav.size();
+
+        for (int j = 0; j < audio_length_samples; j += window_size_samples)
+        {
+            if (j + window_size_samples > audio_length_samples)
+                break;
+            std::vector<float> r{ &input_wav[0] + j, &input_wav[0] + j + window_size_samples };
+            predict(r);
+        }
+
+        if (current_speech.start >= 0) {
+            current_speech.end = audio_length_samples;
+            speeches.push_back(current_speech);
+            current_speech = timestamp_t();
+            prev_end = 0;
+            next_start = 0;
+            temp_end = 0;
+            triggered = false;
+        }
+    };
+
+    void process(const std::vector<float>& input_wav, std::vector<float>& output_wav)
+    {
+        process(input_wav);
+        collect_chunks(input_wav, output_wav);
+    }
+
+    void collect_chunks(const std::vector<float>& input_wav, std::vector<float>& output_wav)
+    {
+        output_wav.clear();
+        for (int i = 0; i < speeches.size(); i++) {
+#ifdef __DEBUG_SPEECH_PROB___
+            std::cout << speeches[i].c_str() << std::endl;
+#endif //#ifdef __DEBUG_SPEECH_PROB___
+            std::vector<float> slice(&input_wav[speeches[i].start], &input_wav[speeches[i].end]);
+            output_wav.insert(output_wav.end(),slice.begin(),slice.end());
+        }
+    };
+
+    const std::vector<timestamp_t> get_speech_timestamps() const
+    {
+        return speeches;
+    }
+
+    void drop_chunks(const std::vector<float>& input_wav, std::vector<float>& output_wav)
+    {
+        output_wav.clear();
+        int current_start = 0;
+        for (int i = 0; i < speeches.size(); i++) {
+
+            std::vector<float> slice(&input_wav[current_start],&input_wav[speeches[i].start]);
+            output_wav.insert(output_wav.end(), slice.begin(), slice.end());
+            current_start = speeches[i].end;
+        }
+
+        std::vector<float> slice(&input_wav[current_start], &input_wav[input_wav.size()]);
+        output_wav.insert(output_wav.end(), slice.begin(), slice.end());
+    };
+
+private:
+    // model config
+    int64_t window_size_samples;  // Assign when init, support 256 512 768 for 8k; 512 1024 1536 for 16k.
+    int sample_rate;  //Assign when init support 16000 or 8000      
+    int sr_per_ms;   // Assign when init, support 8 or 16
+    float threshold; 
+    int min_silence_samples; // sr_per_ms * #ms
+    int min_silence_samples_at_max_speech; // sr_per_ms * #98
+    int min_speech_samples; // sr_per_ms * #ms
+    float max_speech_samples;
+    int speech_pad_samples; // usually a 
+    int audio_length_samples;
+
+    // model states
+    bool triggered = false;
+    unsigned int temp_end = 0;
+    unsigned int current_sample = 0;    
+    // MAX 4294967295 samples / 8sample per ms / 1000 / 60 = 8947 minutes  
+    int prev_end;
+    int next_start = 0;
+
+    //Output timestamp
+    std::vector<timestamp_t> speeches;
+    timestamp_t current_speech;
+
+
+    // Onnx model
+    // Inputs
+    std::vector<Ort::Value> ort_inputs;
+    
+    std::vector<const char *> input_node_names = {"input", "state", "sr"};
+    std::vector<float> input;
+    unsigned int size_state = 2 * 1 * 128; // It's FIXED.
+    std::vector<float> _state;
+    std::vector<int64_t> sr;
+
+    int64_t input_node_dims[2] = {};
+    const int64_t state_node_dims[3] = {2, 1, 128}; 
+    const int64_t sr_node_dims[1] = {1};
+
+    // Outputs
+    std::vector<Ort::Value> ort_outputs;
+    std::vector<const char *> output_node_names = {"output", "stateN"};
+
+public:
+    // Construction
+    VadIterator(const std::wstring ModelPath,
+        int Sample_rate = 16000, int windows_frame_size = 32,
+        float Threshold = 0.5, int min_silence_duration_ms = 0,
+        int speech_pad_ms = 32, int min_speech_duration_ms = 32,
+        float max_speech_duration_s = std::numeric_limits<float>::infinity())
+    {
+        init_onnx_model(ModelPath);
+        threshold = Threshold;
+        sample_rate = Sample_rate;
+        sr_per_ms = sample_rate / 1000;
+
+        window_size_samples = windows_frame_size * sr_per_ms;
+
+        min_speech_samples = sr_per_ms * min_speech_duration_ms;
+        speech_pad_samples = sr_per_ms * speech_pad_ms;
+
+        max_speech_samples = (
+            sample_rate * max_speech_duration_s
+            - window_size_samples
+            - 2 * speech_pad_samples
+            );
+
+        min_silence_samples = sr_per_ms * min_silence_duration_ms;
+        min_silence_samples_at_max_speech = sr_per_ms * 98;
+
+        input.resize(window_size_samples);
+        input_node_dims[0] = 1;
+        input_node_dims[1] = window_size_samples;
+
+        _state.resize(size_state);
+        sr.resize(1);
+        sr[0] = sample_rate;
+    };
+};
+
+int main()
+{
+    std::vector<timestamp_t> stamps;
+
+    // Read wav
+    wav::WavReader wav_reader("recorder.wav"); //16000,1,32float
+    std::vector<float> input_wav(wav_reader.num_samples());
+    std::vector<float> output_wav;
+
+    for (int i = 0; i < wav_reader.num_samples(); i++)
+    {
+        input_wav[i] = static_cast<float>(*(wav_reader.data() + i));
+    }
+
+
+
+    // ===== Test configs =====
+    std::wstring path = L"silero_vad.onnx";
+    VadIterator vad(path);
+
+    // ==============================================
+    // ==== = Example 1 of full function  ===== 
+    // ==============================================
+    vad.process(input_wav);
+
+    // 1.a get_speech_timestamps
+    stamps = vad.get_speech_timestamps();
+    for (int i = 0; i < stamps.size(); i++) {
+
+        std::cout << stamps[i].c_str() << std::endl;
+    }
+
+    // 1.b collect_chunks output wav
+    vad.collect_chunks(input_wav, output_wav);
+
+    // 1.c drop_chunks output wav
+    vad.drop_chunks(input_wav, output_wav);
+
+    // ==============================================
+    // ===== Example 2 of simple full function  =====
+    // ==============================================
+    vad.process(input_wav, output_wav);
+
+    stamps = vad.get_speech_timestamps();
+    for (int i = 0; i < stamps.size(); i++) {
+
+        std::cout << stamps[i].c_str() << std::endl;
+    }
+
+    // ==============================================
+    // ===== Example 3 of full function  =====
+    // ==============================================
+    for(int i = 0; i<2; i++)
+        vad.process(input_wav, output_wav);
+}

examples/cpp/wav.h

@@ -0,0 +1,235 @@
+// Copyright (c) 2016 Personal (Binbin Zhang)
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+
+#ifndef FRONTEND_WAV_H_
+#define FRONTEND_WAV_H_
+
+#include <assert.h>
+#include <stdint.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#include <string>
+
+// #include "utils/log.h"
+
+namespace wav {
+
+struct WavHeader {
+  char riff[4];  // "riff"
+  unsigned int size;
+  char wav[4];  // "WAVE"
+  char fmt[4];  // "fmt "
+  unsigned int fmt_size;
+  uint16_t format;
+  uint16_t channels;
+  unsigned int sample_rate;
+  unsigned int bytes_per_second;
+  uint16_t block_size;
+  uint16_t bit;
+  char data[4];  // "data"
+  unsigned int data_size;
+};
+
+class WavReader {
+ public:
+  WavReader() : data_(nullptr) {}
+  explicit WavReader(const std::string& filename) { Open(filename); }
+
+  bool Open(const std::string& filename) {
+    FILE* fp = fopen(filename.c_str(), "rb"); //文件读取
+    if (NULL == fp) {
+      std::cout << "Error in read " << filename;
+      return false;
+    }
+
+    WavHeader header;
+    fread(&header, 1, sizeof(header), fp);
+    if (header.fmt_size < 16) {
+      printf("WaveData: expect PCM format data "
+              "to have fmt chunk of at least size 16.\n");
+      return false;
+    } else if (header.fmt_size > 16) {
+      int offset = 44 - 8 + header.fmt_size - 16;
+      fseek(fp, offset, SEEK_SET);
+      fread(header.data, 8, sizeof(char), fp);
+    }
+    // check "riff" "WAVE" "fmt " "data"
+
+    // Skip any sub-chunks between "fmt" and "data".  Usually there will
+    // be a single "fact" sub chunk, but on Windows there can also be a
+    // "list" sub chunk.
+    while (0 != strncmp(header.data, "data", 4)) {
+      // We will just ignore the data in these chunks.
+      fseek(fp, header.data_size, SEEK_CUR);
+      // read next sub chunk
+      fread(header.data, 8, sizeof(char), fp);
+    }
+
+    if (header.data_size == 0) {
+        int offset = ftell(fp);
+        fseek(fp, 0, SEEK_END);
+        header.data_size = ftell(fp) - offset;
+        fseek(fp, offset, SEEK_SET);
+    }
+
+    num_channel_ = header.channels;
+    sample_rate_ = header.sample_rate;
+    bits_per_sample_ = header.bit;
+    int num_data = header.data_size / (bits_per_sample_ / 8);
+    data_ = new float[num_data]; // Create 1-dim array
+    num_samples_ = num_data / num_channel_;
+
+    std::cout << "num_channel_    :" << num_channel_ << std::endl;
+    std::cout << "sample_rate_    :" << sample_rate_ << std::endl;
+    std::cout << "bits_per_sample_:" << bits_per_sample_ << std::endl;
+    std::cout << "num_samples     :" << num_data << std::endl;
+    std::cout << "num_data_size   :" << header.data_size << std::endl;
+
+    switch (bits_per_sample_) {
+        case 8: {
+            char sample;
+            for (int i = 0; i < num_data; ++i) {
+                fread(&sample, 1, sizeof(char), fp);
+                data_[i] = static_cast<float>(sample) / 32768;
+            }
+            break;
+        }
+        case 16: {
+            int16_t sample;
+            for (int i = 0; i < num_data; ++i) {
+                fread(&sample, 1, sizeof(int16_t), fp);
+                data_[i] = static_cast<float>(sample) / 32768;
+            }
+            break;
+        }
+        case 32:
+        {
+            if (header.format == 1) //S32
+            {
+                int sample;
+                for (int i = 0; i < num_data; ++i) {
+                    fread(&sample, 1, sizeof(int), fp);
+                    data_[i] = static_cast<float>(sample) / 32768;
+                }
+            }
+            else if (header.format == 3) // IEEE-float
+            {
+                float sample;
+                for (int i = 0; i < num_data; ++i) {
+                    fread(&sample, 1, sizeof(float), fp);
+                    data_[i] = static_cast<float>(sample);
+                }
+            }
+            else {
+                printf("unsupported quantization bits\n");
+            }
+            break;
+        }
+        default:
+            printf("unsupported quantization bits\n");
+            break;
+    }
+
+    fclose(fp);
+    return true;
+  }
+
+  int num_channel() const { return num_channel_; }
+  int sample_rate() const { return sample_rate_; }
+  int bits_per_sample() const { return bits_per_sample_; }
+  int num_samples() const { return num_samples_; }
+
+  ~WavReader() {
+    delete[] data_;
+  }
+
+  const float* data() const { return data_; }
+
+ private:
+  int num_channel_;
+  int sample_rate_;
+  int bits_per_sample_;
+  int num_samples_;  // sample points per channel
+  float* data_;
+};
+
+class WavWriter {
+ public:
+  WavWriter(const float* data, int num_samples, int num_channel,
+            int sample_rate, int bits_per_sample)
+      : data_(data),
+        num_samples_(num_samples),
+        num_channel_(num_channel),
+        sample_rate_(sample_rate),
+        bits_per_sample_(bits_per_sample) {}
+
+  void Write(const std::string& filename) {
+    FILE* fp = fopen(filename.c_str(), "w");
+    // init char 'riff' 'WAVE' 'fmt ' 'data'
+    WavHeader header;
+    char wav_header[44] = {0x52, 0x49, 0x46, 0x46, 0x00, 0x00, 0x00, 0x00, 0x57,
+                           0x41, 0x56, 0x45, 0x66, 0x6d, 0x74, 0x20, 0x10, 0x00,
+                           0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                           0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+                           0x64, 0x61, 0x74, 0x61, 0x00, 0x00, 0x00, 0x00};
+    memcpy(&header, wav_header, sizeof(header));
+    header.channels = num_channel_;
+    header.bit = bits_per_sample_;
+    header.sample_rate = sample_rate_;
+    header.data_size = num_samples_ * num_channel_ * (bits_per_sample_ / 8);
+    header.size = sizeof(header) - 8 + header.data_size;
+    header.bytes_per_second =
+        sample_rate_ * num_channel_ * (bits_per_sample_ / 8);
+    header.block_size = num_channel_ * (bits_per_sample_ / 8);
+
+    fwrite(&header, 1, sizeof(header), fp);
+
+    for (int i = 0; i < num_samples_; ++i) {
+      for (int j = 0; j < num_channel_; ++j) {
+        switch (bits_per_sample_) {
+          case 8: {
+            char sample = static_cast<char>(data_[i * num_channel_ + j]);
+            fwrite(&sample, 1, sizeof(sample), fp);
+            break;
+          }
+          case 16: {
+            int16_t sample = static_cast<int16_t>(data_[i * num_channel_ + j]);
+            fwrite(&sample, 1, sizeof(sample), fp);
+            break;
+          }
+          case 32: {
+            int sample = static_cast<int>(data_[i * num_channel_ + j]);
+            fwrite(&sample, 1, sizeof(sample), fp);
+            break;
+          }
+        }
+      }
+    }
+    fclose(fp);
+  }
+
+ private:
+  const float* data_;
+  int num_samples_;  // total float points in data_
+  int num_channel_;
+  int sample_rate_;
+  int bits_per_sample_;
+};
+
+}  // namespace wenet
+
+#endif  // FRONTEND_WAV_H_

examples/csharp/Program.cs

@@ -0,0 +1,35 @@
+using System.Text;
+
+namespace VadDotNet;
+
+
+class Program
+{
+    private const string MODEL_PATH = "./resources/silero_vad.onnx";
+    private const string EXAMPLE_WAV_FILE = "./resources/example.wav";
+    private const int SAMPLE_RATE = 16000;
+    private const float THRESHOLD = 0.5f;
+    private const int MIN_SPEECH_DURATION_MS = 250;
+    private const float MAX_SPEECH_DURATION_SECONDS = float.PositiveInfinity;
+    private const int MIN_SILENCE_DURATION_MS = 100;
+    private const int SPEECH_PAD_MS = 30;
+
+    public static void Main(string[] args)
+    {
+        
+            var vadDetector = new SileroVadDetector(MODEL_PATH, THRESHOLD, SAMPLE_RATE,
+                MIN_SPEECH_DURATION_MS, MAX_SPEECH_DURATION_SECONDS, MIN_SILENCE_DURATION_MS, SPEECH_PAD_MS);
+            List<SileroSpeechSegment> speechTimeList = vadDetector.GetSpeechSegmentList(new FileInfo(EXAMPLE_WAV_FILE));
+            //Console.WriteLine(speechTimeList.ToJson());
+            StringBuilder sb = new StringBuilder();
+            foreach (var speechSegment in speechTimeList)
+            {
+                sb.Append($"start second: {speechSegment.StartSecond}, end second: {speechSegment.EndSecond}\n");
+                
+            }
+            Console.WriteLine(sb.ToString());
+       
+    }
+    
+    
+}

examples/csharp/SileroSpeechSegment.cs

@@ -0,0 +1,21 @@
+namespace VadDotNet;
+
+public class SileroSpeechSegment
+{
+    public int? StartOffset { get; set; }
+    public int? EndOffset { get; set; }
+    public float? StartSecond { get; set; }
+    public float? EndSecond { get; set; }
+
+    public SileroSpeechSegment()
+    {
+    }
+
+    public SileroSpeechSegment(int startOffset, int? endOffset, float? startSecond, float? endSecond)
+    {
+        StartOffset = startOffset;
+        EndOffset = endOffset;
+        StartSecond = startSecond;
+        EndSecond = endSecond;
+    }
+}

examples/csharp/SileroVadDetector.cs

@@ -0,0 +1,250 @@
+using NAudio.Wave;
+using VADdotnet;
+
+namespace VadDotNet;
+
+public class SileroVadDetector
+{
+    private readonly SileroVadOnnxModel _model;
+    private readonly float _threshold;
+    private readonly float _negThreshold;
+    private readonly int _samplingRate;
+    private readonly int _windowSizeSample;
+    private readonly float _minSpeechSamples;
+    private readonly float _speechPadSamples;
+    private readonly float _maxSpeechSamples;
+    private readonly float _minSilenceSamples;
+    private readonly float _minSilenceSamplesAtMaxSpeech;
+    private int _audioLengthSamples;
+    private const float THRESHOLD_GAP = 0.15f;
+    // ReSharper disable once InconsistentNaming
+    private const int SAMPLING_RATE_8K = 8000;
+    // ReSharper disable once InconsistentNaming
+    private const int SAMPLING_RATE_16K = 16000;
+
+    public SileroVadDetector(string onnxModelPath, float threshold, int samplingRate,
+        int minSpeechDurationMs, float maxSpeechDurationSeconds,
+        int minSilenceDurationMs, int speechPadMs)
+    {
+        if (samplingRate != SAMPLING_RATE_8K && samplingRate != SAMPLING_RATE_16K)
+        {
+            throw new ArgumentException("Sampling rate not support, only available for [8000, 16000]");
+        }
+
+        this._model = new SileroVadOnnxModel(onnxModelPath);
+        this._samplingRate = samplingRate;
+        this._threshold = threshold;
+        this._negThreshold = threshold - THRESHOLD_GAP;
+        this._windowSizeSample = samplingRate == SAMPLING_RATE_16K ? 512 : 256;
+        this._minSpeechSamples = samplingRate * minSpeechDurationMs / 1000f;
+        this._speechPadSamples = samplingRate * speechPadMs / 1000f;
+        this._maxSpeechSamples = samplingRate * maxSpeechDurationSeconds - _windowSizeSample - 2 * _speechPadSamples;
+        this._minSilenceSamples = samplingRate * minSilenceDurationMs / 1000f;
+        this._minSilenceSamplesAtMaxSpeech = samplingRate * 98 / 1000f;
+        this.Reset();
+    }
+
+    public void Reset()
+    {
+        _model.ResetStates();
+    }
+
+    public List<SileroSpeechSegment> GetSpeechSegmentList(FileInfo wavFile)
+    {
+        Reset();
+
+        using (var audioFile = new AudioFileReader(wavFile.FullName))
+        {
+            List<float> speechProbList = new List<float>();
+            this._audioLengthSamples = (int)(audioFile.Length / 2);
+            float[] buffer = new float[this._windowSizeSample];
+
+            while (audioFile.Read(buffer, 0, buffer.Length) > 0)
+            {
+                float speechProb = _model.Call(new[] { buffer }, _samplingRate)[0];
+                speechProbList.Add(speechProb);
+            }
+
+            return CalculateProb(speechProbList);
+        }
+    }
+
+    private List<SileroSpeechSegment> CalculateProb(List<float> speechProbList)
+    {
+        List<SileroSpeechSegment> result = new List<SileroSpeechSegment>();
+        bool triggered = false;
+        int tempEnd = 0, prevEnd = 0, nextStart = 0;
+        SileroSpeechSegment segment = new SileroSpeechSegment();
+
+        for (int i = 0; i < speechProbList.Count; i++)
+        {
+            float speechProb = speechProbList[i];
+            if (speechProb >= _threshold && (tempEnd != 0))
+            {
+                tempEnd = 0;
+                if (nextStart < prevEnd)
+                {
+                    nextStart = _windowSizeSample * i;
+                }
+            }
+
+            if (speechProb >= _threshold && !triggered)
+            {
+                triggered = true;
+                segment.StartOffset = _windowSizeSample * i;
+                continue;
+            }
+
+            if (triggered && (_windowSizeSample * i) - segment.StartOffset > _maxSpeechSamples)
+            {
+                if (prevEnd != 0)
+                {
+                    segment.EndOffset = prevEnd;
+                    result.Add(segment);
+                    segment = new SileroSpeechSegment();
+                    if (nextStart < prevEnd)
+                    {
+                        triggered = false;
+                    }
+                    else
+                    {
+                        segment.StartOffset = nextStart;
+                    }
+
+                    prevEnd = 0;
+                    nextStart = 0;
+                    tempEnd = 0;
+                }
+                else
+                {
+                    segment.EndOffset = _windowSizeSample * i;
+                    result.Add(segment);
+                    segment = new SileroSpeechSegment();
+                    prevEnd = 0;
+                    nextStart = 0;
+                    tempEnd = 0;
+                    triggered = false;
+                    continue;
+                }
+            }
+
+            if (speechProb < _negThreshold && triggered)
+            {
+                if (tempEnd == 0)
+                {
+                    tempEnd = _windowSizeSample * i;
+                }
+
+                if (((_windowSizeSample * i) - tempEnd) > _minSilenceSamplesAtMaxSpeech)
+                {
+                    prevEnd = tempEnd;
+                }
+
+                if ((_windowSizeSample * i) - tempEnd < _minSilenceSamples)
+                {
+                    continue;
+                }
+                else
+                {
+                    segment.EndOffset = tempEnd;
+                    if ((segment.EndOffset - segment.StartOffset) > _minSpeechSamples)
+                    {
+                        result.Add(segment);
+                    }
+
+                    segment = new SileroSpeechSegment();
+                    prevEnd = 0;
+                    nextStart = 0;
+                    tempEnd = 0;
+                    triggered = false;
+                    continue;
+                }
+            }
+        }
+
+        if (segment.StartOffset != null && (_audioLengthSamples - segment.StartOffset) > _minSpeechSamples)
+        {
+            segment.EndOffset = _audioLengthSamples;
+            result.Add(segment);
+        }
+
+        for (int i = 0; i < result.Count; i++)
+        {
+            SileroSpeechSegment item = result[i];
+            if (i == 0)
+            {
+                item.StartOffset = (int)Math.Max(0, item.StartOffset.Value - _speechPadSamples);
+            }
+
+            if (i != result.Count - 1)
+            {
+                SileroSpeechSegment nextItem = result[i + 1];
+                int silenceDuration = nextItem.StartOffset.Value - item.EndOffset.Value;
+                if (silenceDuration < 2 * _speechPadSamples)
+                {
+                    item.EndOffset = item.EndOffset + (silenceDuration / 2);
+                    nextItem.StartOffset = Math.Max(0, nextItem.StartOffset.Value - (silenceDuration / 2));
+                }
+                else
+                {
+                    item.EndOffset = (int)Math.Min(_audioLengthSamples, item.EndOffset.Value + _speechPadSamples);
+                    nextItem.StartOffset = (int)Math.Max(0, nextItem.StartOffset.Value - _speechPadSamples);
+                }
+            }
+            else
+            {
+                item.EndOffset = (int)Math.Min(_audioLengthSamples, item.EndOffset.Value + _speechPadSamples);
+            }
+        }
+
+        return MergeListAndCalculateSecond(result, _samplingRate);
+    }
+
+    private List<SileroSpeechSegment> MergeListAndCalculateSecond(List<SileroSpeechSegment> original, int samplingRate)
+    {
+        List<SileroSpeechSegment> result = new List<SileroSpeechSegment>();
+        if (original == null || original.Count == 0)
+        {
+            return result;
+        }
+
+        int left = original[0].StartOffset.Value;
+        int right = original[0].EndOffset.Value;
+        if (original.Count > 1)
+        {
+            original.Sort((a, b) => a.StartOffset.Value.CompareTo(b.StartOffset.Value));
+            for (int i = 1; i < original.Count; i++)
+            {
+                SileroSpeechSegment segment = original[i];
+
+                if (segment.StartOffset > right)
+                {
+                    result.Add(new SileroSpeechSegment(left, right,
+                        CalculateSecondByOffset(left, samplingRate), CalculateSecondByOffset(right, samplingRate)));
+                    left = segment.StartOffset.Value;
+                    right = segment.EndOffset.Value;
+                }
+                else
+                {
+                    right = Math.Max(right, segment.EndOffset.Value);
+                }
+            }
+
+            result.Add(new SileroSpeechSegment(left, right,
+                CalculateSecondByOffset(left, samplingRate), CalculateSecondByOffset(right, samplingRate)));
+        }
+        else
+        {
+            result.Add(new SileroSpeechSegment(left, right,
+                CalculateSecondByOffset(left, samplingRate), CalculateSecondByOffset(right, samplingRate)));
+        }
+
+        return result;
+    }
+
+    private float CalculateSecondByOffset(int offset, int samplingRate)
+    {
+        float secondValue = offset * 1.0f / samplingRate;
+        return (float)Math.Floor(secondValue * 1000.0f) / 1000.0f;
+    }
+}

examples/csharp/SileroVadOnnxModel.cs

@@ -0,0 +1,220 @@
+using Microsoft.ML.OnnxRuntime;
+using Microsoft.ML.OnnxRuntime.Tensors;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace VADdotnet;
+
+
+    public class SileroVadOnnxModel : IDisposable
+    {
+        private readonly InferenceSession session;
+        private float[][][] state;
+        private float[][] context;
+        private int lastSr = 0;
+        private int lastBatchSize = 0;
+        private static readonly List<int> SAMPLE_RATES = new List<int> { 8000, 16000 };
+
+        public SileroVadOnnxModel(string modelPath)
+        {
+            var sessionOptions = new SessionOptions();
+            sessionOptions.InterOpNumThreads = 1;
+            sessionOptions.IntraOpNumThreads = 1;
+            sessionOptions.EnableCpuMemArena = true;
+
+            session = new InferenceSession(modelPath, sessionOptions);
+            ResetStates();
+        }
+
+        public void ResetStates()
+        {
+            state = new float[2][][];
+            state[0] = new float[1][];
+            state[1] = new float[1][];
+            state[0][0] = new float[128];
+            state[1][0] = new float[128];
+            context = Array.Empty<float[]>();
+            lastSr = 0;
+            lastBatchSize = 0;
+        }
+
+        public void Dispose()
+        {
+            session?.Dispose();
+        }
+
+        public class ValidationResult
+        {
+            public float[][] X { get; }
+            public int Sr { get; }
+
+            public ValidationResult(float[][] x, int sr)
+            {
+                X = x;
+                Sr = sr;
+            }
+        }
+
+        private ValidationResult ValidateInput(float[][] x, int sr)
+        {
+            if (x.Length == 1)
+            {
+                x = new float[][] { x[0] };
+            }
+            if (x.Length > 2)
+            {
+                throw new ArgumentException($"Incorrect audio data dimension: {x[0].Length}");
+            }
+
+            if (sr != 16000 && (sr % 16000 == 0))
+            {
+                int step = sr / 16000;
+                float[][] reducedX = new float[x.Length][];
+
+                for (int i = 0; i < x.Length; i++)
+                {
+                    float[] current = x[i];
+                    float[] newArr = new float[(current.Length + step - 1) / step];
+
+                    for (int j = 0, index = 0; j < current.Length; j += step, index++)
+                    {
+                        newArr[index] = current[j];
+                    }
+
+                    reducedX[i] = newArr;
+                }
+
+                x = reducedX;
+                sr = 16000;
+            }
+
+            if (!SAMPLE_RATES.Contains(sr))
+            {
+                throw new ArgumentException($"Only supports sample rates {string.Join(", ", SAMPLE_RATES)} (or multiples of 16000)");
+            }
+
+            if (((float)sr) / x[0].Length > 31.25)
+            {
+                throw new ArgumentException("Input audio is too short");
+            }
+
+            return new ValidationResult(x, sr);
+        }
+
+        private static float[][] Concatenate(float[][] a, float[][] b)
+        {
+            if (a.Length != b.Length)
+            {
+                throw new ArgumentException("The number of rows in both arrays must be the same.");
+            }
+
+            int rows = a.Length;
+            int colsA = a[0].Length;
+            int colsB = b[0].Length;
+            float[][] result = new float[rows][];
+
+            for (int i = 0; i < rows; i++)
+            {
+                result[i] = new float[colsA + colsB];
+                Array.Copy(a[i], 0, result[i], 0, colsA);
+                Array.Copy(b[i], 0, result[i], colsA, colsB);
+            }
+
+            return result;
+        }
+
+        private static float[][] GetLastColumns(float[][] array, int contextSize)
+        {
+            int rows = array.Length;
+            int cols = array[0].Length;
+
+            if (contextSize > cols)
+            {
+                throw new ArgumentException("contextSize cannot be greater than the number of columns in the array.");
+            }
+
+            float[][] result = new float[rows][];
+
+            for (int i = 0; i < rows; i++)
+            {
+                result[i] = new float[contextSize];
+                Array.Copy(array[i], cols - contextSize, result[i], 0, contextSize);
+            }
+
+            return result;
+        }
+
+        public float[] Call(float[][] x, int sr)
+        {
+            var result = ValidateInput(x, sr);
+            x = result.X;
+            sr = result.Sr;
+            int numberSamples = sr == 16000 ? 512 : 256;
+
+            if (x[0].Length != numberSamples)
+            {
+                throw new ArgumentException($"Provided number of samples is {x[0].Length} (Supported values: 256 for 8000 sample rate, 512 for 16000)");
+            }
+
+            int batchSize = x.Length;
+            int contextSize = sr == 16000 ? 64 : 32;
+
+            if (lastBatchSize == 0)
+            {
+                ResetStates();
+            }
+            if (lastSr != 0 && lastSr != sr)
+            {
+                ResetStates();
+            }
+            if (lastBatchSize != 0 && lastBatchSize != batchSize)
+            {
+                ResetStates();
+            }
+
+            if (context.Length == 0)
+            {
+                context = new float[batchSize][];
+                for (int i = 0; i < batchSize; i++)
+                {
+                    context[i] = new float[contextSize];
+                }
+            }
+
+            x = Concatenate(context, x);
+
+            var inputs = new List<NamedOnnxValue>
+            {
+                NamedOnnxValue.CreateFromTensor("input", new DenseTensor<float>(x.SelectMany(a => a).ToArray(), new[] { x.Length, x[0].Length })),
+                NamedOnnxValue.CreateFromTensor("sr", new DenseTensor<long>(new[] { (long)sr }, new[] { 1 })),
+                NamedOnnxValue.CreateFromTensor("state", new DenseTensor<float>(state.SelectMany(a => a.SelectMany(b => b)).ToArray(), new[] { state.Length, state[0].Length, state[0][0].Length }))
+            };
+
+            using (var outputs = session.Run(inputs))
+            {
+                var output = outputs.First(o => o.Name == "output").AsTensor<float>();
+                var newState = outputs.First(o => o.Name == "stateN").AsTensor<float>();
+
+                context = GetLastColumns(x, contextSize);
+                lastSr = sr;
+                lastBatchSize = batchSize;
+
+                state = new float[newState.Dimensions[0]][][];
+                for (int i = 0; i < newState.Dimensions[0]; i++)
+                {
+                    state[i] = new float[newState.Dimensions[1]][];
+                    for (int j = 0; j < newState.Dimensions[1]; j++)
+                    {
+                        state[i][j] = new float[newState.Dimensions[2]];
+                        for (int k = 0; k < newState.Dimensions[2]; k++)
+                        {
+                            state[i][j][k] = newState[i, j, k];
+                        }
+                    }
+                }
+
+                return output.ToArray();
+            }
+        }
+    }

examples/csharp/VadDotNet.csproj

@@ -0,0 +1,25 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+    <PropertyGroup>
+        <OutputType>Exe</OutputType>
+        <TargetFramework>net8.0</TargetFramework>
+        <ImplicitUsings>enable</ImplicitUsings>
+        <Nullable>enable</Nullable>
+    </PropertyGroup>
+
+    <ItemGroup>
+      <PackageReference Include="Microsoft.ML.OnnxRuntime" Version="1.18.1" />
+      <PackageReference Include="NAudio" Version="2.2.1" />
+    </ItemGroup>
+
+    <ItemGroup>
+      <Folder Include="resources\" />
+    </ItemGroup>
+
+    <ItemGroup>
+        <Content Include="resources\**">
+            <CopyToOutputDirectory>PreserveNewest</CopyToOutputDirectory>
+        </Content>
+    </ItemGroup>
+
+</Project>

examples/csharp/resources/put_model_here.txt

@@ -0,0 +1 @@
+place onnx model file and example.wav file in this folder

examples/go/README.md

@@ -0,0 +1,19 @@
+## Golang Example
+
+This is a sample program of how to run speech detection using `silero-vad` from Golang (CGO + ONNX Runtime).
+
+### Requirements
+
+- Golang >= v1.21
+- ONNX Runtime
+
+### Usage
+
+```sh
+go run ./cmd/main.go test.wav
+```
+
+> **_Note_**
+>
+> Make sure you have the ONNX Runtime library and C headers installed in your path.
+

examples/go/cmd/main.go

@@ -0,0 +1,63 @@
+package main
+
+import (
+	"log"
+	"os"
+
+	"github.com/streamer45/silero-vad-go/speech"
+
+	"github.com/go-audio/wav"
+)
+
+func main() {
+	sd, err := speech.NewDetector(speech.DetectorConfig{
+		ModelPath:            "../../src/silero_vad/data/silero_vad.onnx",
+		SampleRate:           16000,
+		Threshold:            0.5,
+		MinSilenceDurationMs: 100,
+		SpeechPadMs:          30,
+	})
+	if err != nil {
+		log.Fatalf("failed to create speech detector: %s", err)
+	}
+
+	if len(os.Args) != 2 {
+		log.Fatalf("invalid arguments provided: expecting one file path")
+	}
+
+	f, err := os.Open(os.Args[1])
+	if err != nil {
+		log.Fatalf("failed to open sample audio file: %s", err)
+	}
+	defer f.Close()
+
+	dec := wav.NewDecoder(f)
+
+	if ok := dec.IsValidFile(); !ok {
+		log.Fatalf("invalid WAV file")
+	}
+
+	buf, err := dec.FullPCMBuffer()
+	if err != nil {
+		log.Fatalf("failed to get PCM buffer")
+	}
+
+	pcmBuf := buf.AsFloat32Buffer()
+
+	segments, err := sd.Detect(pcmBuf.Data)
+	if err != nil {
+		log.Fatalf("Detect failed: %s", err)
+	}
+
+	for _, s := range segments {
+		log.Printf("speech starts at %0.2fs", s.SpeechStartAt)
+		if s.SpeechEndAt > 0 {
+			log.Printf("speech ends at %0.2fs", s.SpeechEndAt)
+		}
+	}
+
+	err = sd.Destroy()
+	if err != nil {
+		log.Fatalf("failed to destroy detector: %s", err)
+	}
+}

examples/go/go.mod

@@ -0,0 +1,13 @@
+module silero
+
+go 1.21.4
+
+require (
+	github.com/go-audio/wav v1.1.0
+	github.com/streamer45/silero-vad-go v0.2.1
+)
+
+require (
+	github.com/go-audio/audio v1.0.0 // indirect
+	github.com/go-audio/riff v1.0.0 // indirect
+)

examples/go/go.sum

@@ -0,0 +1,18 @@
+github.com/davecgh/go-spew v1.1.1 h1:vj9j/u1bqnvCEfJOwUhtlOARqs3+rkHYY13jYWTU97c=
+github.com/davecgh/go-spew v1.1.1/go.mod h1:J7Y8YcW2NihsgmVo/mv3lAwl/skON4iLHjSsI+c5H38=
+github.com/go-audio/audio v1.0.0 h1:zS9vebldgbQqktK4H0lUqWrG8P0NxCJVqcj7ZpNnwd4=
+github.com/go-audio/audio v1.0.0/go.mod h1:6uAu0+H2lHkwdGsAY+j2wHPNPpPoeg5AaEFh9FlA+Zs=
+github.com/go-audio/riff v1.0.0 h1:d8iCGbDvox9BfLagY94fBynxSPHO80LmZCaOsmKxokA=
+github.com/go-audio/riff v1.0.0/go.mod h1:l3cQwc85y79NQFCRB7TiPoNiaijp6q8Z0Uv38rVG498=
+github.com/go-audio/wav v1.1.0 h1:jQgLtbqBzY7G+BM8fXF7AHUk1uHUviWS4X39d5rsL2g=
+github.com/go-audio/wav v1.1.0/go.mod h1:mpe9qfwbScEbkd8uybLuIpTgHyrISw/OTuvjUW2iGtE=
+github.com/pmezard/go-difflib v1.0.0 h1:4DBwDE0NGyQoBHbLQYPwSUPoCMWR5BEzIk/f1lZbAQM=
+github.com/pmezard/go-difflib v1.0.0/go.mod h1:iKH77koFhYxTK1pcRnkKkqfTogsbg7gZNVY4sRDYZ/4=
+github.com/streamer45/silero-vad-go v0.2.0 h1:bbRTa6cQuc7VI88y0qicx375UyWoxE6wlVOF+mUg0+g=
+github.com/streamer45/silero-vad-go v0.2.0/go.mod h1:B+2FXs/5fZ6pzl6unUZYhZqkYdOB+3saBVzjOzdZnUs=
+github.com/streamer45/silero-vad-go v0.2.1 h1:Li1/tTC4H/3cyw6q4weX+U8GWwEL3lTekK/nYa1Cvuk=
+github.com/streamer45/silero-vad-go v0.2.1/go.mod h1:B+2FXs/5fZ6pzl6unUZYhZqkYdOB+3saBVzjOzdZnUs=
+github.com/stretchr/testify v1.8.4 h1:CcVxjf3Q8PM0mHUKJCdn+eZZtm5yQwehR5yeSVQQcUk=
+github.com/stretchr/testify v1.8.4/go.mod h1:sz/lmYIOXD/1dqDmKjjqLyZ2RngseejIcXlSw2iwfAo=
+gopkg.in/yaml.v3 v3.0.1 h1:fxVm/GzAzEWqLHuvctI91KS9hhNmmWOoWu0XTYJS7CA=
+gopkg.in/yaml.v3 v3.0.1/go.mod h1:K4uyk7z7BCEPqu6E+C64Yfv1cQ7kz7rIZviUmN+EgEM=

examples/java-example/pom.xml

@@ -0,0 +1,30 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>org.example</groupId>
+  <artifactId>java-example</artifactId>
+  <version>1.0-SNAPSHOT</version>
+  <packaging>jar</packaging>
+
+  <name>sliero-vad-example</name>
+  <url>http://maven.apache.org</url>
+
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <version>3.8.1</version>
+      <scope>test</scope>
+    </dependency>
+    <dependency>
+      <groupId>com.microsoft.onnxruntime</groupId>
+      <artifactId>onnxruntime</artifactId>
+      <version>1.16.0-rc1</version>
+    </dependency>
+  </dependencies>
+</project>

examples/java-example/src/main/java/org/example/App.java

@@ -0,0 +1,69 @@
+package org.example;
+
+import ai.onnxruntime.OrtException;
+import javax.sound.sampled.*;
+import java.util.Map;
+
+public class App {
+
+    private static final String MODEL_PATH = "src/main/resources/silero_vad.onnx";
+    private static final int SAMPLE_RATE = 16000;
+    private static final float START_THRESHOLD = 0.6f;
+    private static final float END_THRESHOLD = 0.45f;
+    private static final int MIN_SILENCE_DURATION_MS = 600;
+    private static final int SPEECH_PAD_MS = 500;
+    private static final int WINDOW_SIZE_SAMPLES = 2048;
+
+    public static void main(String[] args) {
+        // Initialize the Voice Activity Detector
+        SlieroVadDetector vadDetector;
+        try {
+            vadDetector = new SlieroVadDetector(MODEL_PATH, START_THRESHOLD, END_THRESHOLD, SAMPLE_RATE, MIN_SILENCE_DURATION_MS, SPEECH_PAD_MS);
+        } catch (OrtException e) {
+            System.err.println("Error initializing the VAD detector: " + e.getMessage());
+            return;
+        }
+
+        // Set audio format
+        AudioFormat format = new AudioFormat(SAMPLE_RATE, 16, 1, true, false);
+        DataLine.Info info = new DataLine.Info(TargetDataLine.class, format);
+
+        // Get the target data line and open it with the specified format
+        TargetDataLine targetDataLine;
+        try {
+            targetDataLine = (TargetDataLine) AudioSystem.getLine(info);
+            targetDataLine.open(format);
+            targetDataLine.start();
+        } catch (LineUnavailableException e) {
+            System.err.println("Error opening target data line: " + e.getMessage());
+            return;
+        }
+
+        // Main loop to continuously read data and apply Voice Activity Detection
+        while (targetDataLine.isOpen()) {
+            byte[] data = new byte[WINDOW_SIZE_SAMPLES];
+
+            int numBytesRead = targetDataLine.read(data, 0, data.length);
+            if (numBytesRead <= 0) {
+                System.err.println("Error reading data from target data line.");
+                continue;
+            }
+
+            // Apply the Voice Activity Detector to the data and get the result
+            Map<String, Double> detectResult;
+            try {
+                detectResult = vadDetector.apply(data, true);
+            } catch (Exception e) {
+                System.err.println("Error applying VAD detector: " + e.getMessage());
+                continue;
+            }
+
+            if (!detectResult.isEmpty()) {
+                System.out.println(detectResult);
+            }
+        }
+
+        // Close the target data line to release audio resources
+        targetDataLine.close();
+    }
+}

examples/java-example/src/main/java/org/example/SlieroVadDetector.java

@@ -0,0 +1,145 @@
+package org.example;
+
+import ai.onnxruntime.OrtException;
+
+import java.math.BigDecimal;
+import java.math.RoundingMode;
+import java.util.Collections;
+import java.util.HashMap;
+import java.util.Map;
+
+
+public class SlieroVadDetector {
+    // OnnxModel model used for speech processing
+    private final SlieroVadOnnxModel model;
+    // Threshold for speech start
+    private final float startThreshold;
+    // Threshold for speech end
+    private final float endThreshold;
+    // Sampling rate
+    private final int samplingRate;
+    // Minimum number of silence samples to determine the end threshold of speech
+    private final float minSilenceSamples;
+    // Additional number of samples for speech start or end to calculate speech start or end time
+    private final float speechPadSamples;
+    // Whether in the triggered state (i.e. whether speech is being detected)
+    private boolean triggered;
+    // Temporarily stored number of speech end samples
+    private int tempEnd;
+    // Number of samples currently being processed
+    private int currentSample;
+
+
+    public SlieroVadDetector(String modelPath,
+                             float startThreshold,
+                             float endThreshold,
+                             int samplingRate,
+                             int minSilenceDurationMs,
+                             int speechPadMs) throws OrtException {
+        // Check if the sampling rate is 8000 or 16000, if not, throw an exception
+        if (samplingRate != 8000 && samplingRate != 16000) {
+            throw new IllegalArgumentException("does not support sampling rates other than [8000, 16000]");
+        }
+
+        // Initialize the parameters
+        this.model = new SlieroVadOnnxModel(modelPath);
+        this.startThreshold = startThreshold;
+        this.endThreshold = endThreshold;
+        this.samplingRate = samplingRate;
+        this.minSilenceSamples = samplingRate * minSilenceDurationMs / 1000f;
+        this.speechPadSamples = samplingRate * speechPadMs / 1000f;
+        // Reset the state
+        reset();
+    }
+
+    // Method to reset the state, including the model state, trigger state, temporary end time, and current sample count
+    public void reset() {
+        model.resetStates();
+        triggered = false;
+        tempEnd = 0;
+        currentSample = 0;
+    }
+
+    // apply method for processing the audio array, returning possible speech start or end times
+    public Map<String, Double> apply(byte[] data, boolean returnSeconds) {
+
+        // Convert the byte array to a float array
+        float[] audioData = new float[data.length / 2];
+        for (int i = 0; i < audioData.length; i++) {
+            audioData[i] = ((data[i * 2] & 0xff) | (data[i * 2 + 1] << 8)) / 32767.0f;
+        }
+
+        // Get the length of the audio array as the window size
+        int windowSizeSamples = audioData.length;
+        // Update the current sample count
+        currentSample += windowSizeSamples;
+
+        // Call the model to get the prediction probability of speech
+        float speechProb = 0;
+        try {
+            speechProb = model.call(new float[][]{audioData}, samplingRate)[0];
+        } catch (OrtException e) {
+            throw new RuntimeException(e);
+        }
+
+        // If the speech probability is greater than the threshold and the temporary end time is not 0, reset the temporary end time
+        // This indicates that the speech duration has exceeded expectations and needs to recalculate the end time
+        if (speechProb >= startThreshold && tempEnd != 0) {
+            tempEnd = 0;
+        }
+
+        // If the speech probability is greater than the threshold and not in the triggered state, set to triggered state and calculate the speech start time
+        if (speechProb >= startThreshold && !triggered) {
+            triggered = true;
+            int speechStart = (int) (currentSample - speechPadSamples);
+            speechStart = Math.max(speechStart, 0);
+            Map<String, Double> result = new HashMap<>();
+            // Decide whether to return the result in seconds or sample count based on the returnSeconds parameter
+            if (returnSeconds) {
+                double speechStartSeconds = speechStart / (double) samplingRate;
+                double roundedSpeechStart = BigDecimal.valueOf(speechStartSeconds).setScale(1, RoundingMode.HALF_UP).doubleValue();
+                result.put("start", roundedSpeechStart);
+            } else {
+                result.put("start", (double) speechStart);
+            }
+
+            return result;
+        }
+
+        // If the speech probability is less than a certain threshold and in the triggered state, calculate the speech end time
+        if (speechProb < endThreshold && triggered) {
+            // Initialize or update the temporary end time
+            if (tempEnd == 0) {
+                tempEnd = currentSample;
+            }
+            // If the number of silence samples between the current sample and the temporary end time is less than the minimum silence samples, return null
+            // This indicates that it is not yet possible to determine whether the speech has ended
+            if (currentSample - tempEnd < minSilenceSamples) {
+                return Collections.emptyMap();
+            } else {
+                // Calculate the speech end time, reset the trigger state and temporary end time
+                int speechEnd = (int) (tempEnd + speechPadSamples);
+                tempEnd = 0;
+                triggered = false;
+                Map<String, Double> result = new HashMap<>();
+
+                if (returnSeconds) {
+                    double speechEndSeconds = speechEnd / (double) samplingRate;
+                    double roundedSpeechEnd = BigDecimal.valueOf(speechEndSeconds).setScale(1, RoundingMode.HALF_UP).doubleValue();
+                    result.put("end", roundedSpeechEnd);
+                } else {
+                    result.put("end", (double) speechEnd);
+                }
+                return result;
+            }
+        }
+
+        // If the above conditions are not met, return null by default
+        return Collections.emptyMap();
+    }
+
+    public void close() throws OrtException {
+        reset();
+        model.close();
+    }
+}

examples/java-example/src/main/java/org/example/SlieroVadOnnxModel.java

@@ -0,0 +1,180 @@
+package org.example;
+
+import ai.onnxruntime.OnnxTensor;
+import ai.onnxruntime.OrtEnvironment;
+import ai.onnxruntime.OrtException;
+import ai.onnxruntime.OrtSession;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class SlieroVadOnnxModel {
+    // Define private variable OrtSession
+    private final OrtSession session;
+    private float[][][] h;
+    private float[][][] c;
+    // Define the last sample rate
+    private int lastSr = 0;
+    // Define the last batch size
+    private int lastBatchSize = 0;
+    // Define a list of supported sample rates
+    private static final List<Integer> SAMPLE_RATES = Arrays.asList(8000, 16000);
+
+    // Constructor
+    public SlieroVadOnnxModel(String modelPath) throws OrtException {
+        // Get the ONNX runtime environment
+        OrtEnvironment env = OrtEnvironment.getEnvironment();
+        // Create an ONNX session options object
+        OrtSession.SessionOptions opts = new OrtSession.SessionOptions();
+        // Set the InterOp thread count to 1, InterOp threads are used for parallel processing of different computation graph operations
+        opts.setInterOpNumThreads(1);
+        // Set the IntraOp thread count to 1, IntraOp threads are used for parallel processing within a single operation
+        opts.setIntraOpNumThreads(1);
+        // Add a CPU device, setting to false disables CPU execution optimization
+        opts.addCPU(true);
+        // Create an ONNX session using the environment, model path, and options
+        session = env.createSession(modelPath, opts);
+        // Reset states
+        resetStates();
+    }
+
+    /**
+     * Reset states
+     */
+    void resetStates() {
+        h = new float[2][1][64];
+        c = new float[2][1][64];
+        lastSr = 0;
+        lastBatchSize = 0;
+    }
+
+    public void close() throws OrtException {
+        session.close();
+    }
+
+    /**
+     * Define inner class ValidationResult
+     */
+    public static class ValidationResult {
+        public final float[][] x;
+        public final int sr;
+
+        // Constructor
+        public ValidationResult(float[][] x, int sr) {
+            this.x = x;
+            this.sr = sr;
+        }
+    }
+
+    /**
+     * Function to validate input data
+     */
+    private ValidationResult validateInput(float[][] x, int sr) {
+        // Process the input data with dimension 1
+        if (x.length == 1) {
+            x = new float[][]{x[0]};
+        }
+        // Throw an exception when the input data dimension is greater than 2
+        if (x.length > 2) {
+            throw new IllegalArgumentException("Incorrect audio data dimension: " + x[0].length);
+        }
+
+        // Process the input data when the sample rate is not equal to 16000 and is a multiple of 16000
+        if (sr != 16000 && (sr % 16000 == 0)) {
+            int step = sr / 16000;
+            float[][] reducedX = new float[x.length][];
+
+            for (int i = 0; i < x.length; i++) {
+                float[] current = x[i];
+                float[] newArr = new float[(current.length + step - 1) / step];
+
+                for (int j = 0, index = 0; j < current.length; j += step, index++) {
+                    newArr[index] = current[j];
+                }
+
+                reducedX[i] = newArr;
+            }
+
+            x = reducedX;
+            sr = 16000;
+        }
+
+        // If the sample rate is not in the list of supported sample rates, throw an exception
+        if (!SAMPLE_RATES.contains(sr)) {
+            throw new IllegalArgumentException("Only supports sample rates " + SAMPLE_RATES + " (or multiples of 16000)");
+        }
+
+        // If the input audio block is too short, throw an exception
+        if (((float) sr) / x[0].length > 31.25) {
+            throw new IllegalArgumentException("Input audio is too short");
+        }
+
+        // Return the validated result
+        return new ValidationResult(x, sr);
+    }
+
+    /**
+     * Method to call the ONNX model
+     */
+    public float[] call(float[][] x, int sr) throws OrtException {
+        ValidationResult result = validateInput(x, sr);
+        x = result.x;
+        sr = result.sr;
+
+        int batchSize = x.length;
+
+        if (lastBatchSize == 0 || lastSr != sr || lastBatchSize != batchSize) {
+            resetStates();
+        }
+
+        OrtEnvironment env = OrtEnvironment.getEnvironment();
+
+        OnnxTensor inputTensor = null;
+        OnnxTensor hTensor = null;
+        OnnxTensor cTensor = null;
+        OnnxTensor srTensor = null;
+        OrtSession.Result ortOutputs = null;
+
+        try {
+            // Create input tensors
+            inputTensor = OnnxTensor.createTensor(env, x);
+            hTensor = OnnxTensor.createTensor(env, h);
+            cTensor = OnnxTensor.createTensor(env, c);
+            srTensor = OnnxTensor.createTensor(env, new long[]{sr});
+
+            Map<String, OnnxTensor> inputs = new HashMap<>();
+            inputs.put("input", inputTensor);
+            inputs.put("sr", srTensor);
+            inputs.put("h", hTensor);
+            inputs.put("c", cTensor);
+
+            // Call the ONNX model for calculation
+            ortOutputs = session.run(inputs);
+            // Get the output results
+            float[][] output = (float[][]) ortOutputs.get(0).getValue();
+            h = (float[][][]) ortOutputs.get(1).getValue();
+            c = (float[][][]) ortOutputs.get(2).getValue();
+
+            lastSr = sr;
+            lastBatchSize = batchSize;
+            return output[0];
+        } finally {
+            if (inputTensor != null) {
+                inputTensor.close();
+            }
+            if (hTensor != null) {
+                hTensor.close();
+            }
+            if (cTensor != null) {
+                cTensor.close();
+            }
+            if (srTensor != null) {
+                srTensor.close();
+            }
+            if (ortOutputs != null) {
+                ortOutputs.close();
+            }
+        }
+    }
+}

examples/java-wav-file-example/src/main/java/org/example/App.java

@@ -0,0 +1,37 @@
+package org.example;
+
+import ai.onnxruntime.OrtException;
+import java.io.File;
+import java.util.List;
+
+public class App {
+
+    private static final String MODEL_PATH = "/path/silero_vad.onnx";
+    private static final String EXAMPLE_WAV_FILE = "/path/example.wav";
+    private static final int SAMPLE_RATE = 16000;
+    private static final float THRESHOLD = 0.5f;
+    private static final int MIN_SPEECH_DURATION_MS = 250;
+    private static final float MAX_SPEECH_DURATION_SECONDS = Float.POSITIVE_INFINITY;
+    private static final int MIN_SILENCE_DURATION_MS = 100;
+    private static final int SPEECH_PAD_MS = 30;
+
+    public static void main(String[] args) {
+        // Initialize the Voice Activity Detector
+        SileroVadDetector vadDetector;
+        try {
+            vadDetector = new SileroVadDetector(MODEL_PATH, THRESHOLD, SAMPLE_RATE,
+                    MIN_SPEECH_DURATION_MS, MAX_SPEECH_DURATION_SECONDS, MIN_SILENCE_DURATION_MS, SPEECH_PAD_MS);
+            fromWavFile(vadDetector, new File(EXAMPLE_WAV_FILE));
+        } catch (OrtException e) {
+            System.err.println("Error initializing the VAD detector: " + e.getMessage());
+        }
+    }
+
+    public static void fromWavFile(SileroVadDetector vadDetector, File wavFile) {
+        List<SileroSpeechSegment> speechTimeList = vadDetector.getSpeechSegmentList(wavFile);
+        for (SileroSpeechSegment speechSegment : speechTimeList) {
+            System.out.println(String.format("start second: %f, end second: %f",
+                    speechSegment.getStartSecond(), speechSegment.getEndSecond()));
+        }
+    }
+}

examples/java-wav-file-example/src/main/java/org/example/SileroSpeechSegment.java

@@ -0,0 +1,51 @@
+package org.example;
+
+
+public class SileroSpeechSegment {
+    private Integer startOffset;
+    private Integer endOffset;
+    private Float startSecond;
+    private Float endSecond;
+
+    public SileroSpeechSegment() {
+    }
+
+    public SileroSpeechSegment(Integer startOffset, Integer endOffset, Float startSecond, Float endSecond) {
+        this.startOffset = startOffset;
+        this.endOffset = endOffset;
+        this.startSecond = startSecond;
+        this.endSecond = endSecond;
+    }
+
+    public Integer getStartOffset() {
+        return startOffset;
+    }
+
+    public Integer getEndOffset() {
+        return endOffset;
+    }
+
+    public Float getStartSecond() {
+        return startSecond;
+    }
+
+    public Float getEndSecond() {
+        return endSecond;
+    }
+
+    public void setStartOffset(Integer startOffset) {
+        this.startOffset = startOffset;
+    }
+
+    public void setEndOffset(Integer endOffset) {
+        this.endOffset = endOffset;
+    }
+
+    public void setStartSecond(Float startSecond) {
+        this.startSecond = startSecond;
+    }
+
+    public void setEndSecond(Float endSecond) {
+        this.endSecond = endSecond;
+    }
+}

examples/java-wav-file-example/src/main/java/org/example/SileroVadDetector.java

@@ -0,0 +1,244 @@
+package org.example;
+
+
+import ai.onnxruntime.OrtException;
+
+import javax.sound.sampled.AudioInputStream;
+import javax.sound.sampled.AudioSystem;
+import java.io.File;
+import java.util.ArrayList;
+import java.util.Comparator;
+import java.util.List;
+
+public class SileroVadDetector {
+    private final SileroVadOnnxModel model;
+    private final float threshold;
+    private final float negThreshold;
+    private final int samplingRate;
+    private final int windowSizeSample;
+    private final float minSpeechSamples;
+    private final float speechPadSamples;
+    private final float maxSpeechSamples;
+    private final float minSilenceSamples;
+    private final float minSilenceSamplesAtMaxSpeech;
+    private int audioLengthSamples;
+    private static final float THRESHOLD_GAP = 0.15f;
+    private static final Integer SAMPLING_RATE_8K = 8000;
+    private static final Integer SAMPLING_RATE_16K = 16000;
+
+    /**
+     * Constructor
+     * @param onnxModelPath the path of silero-vad onnx model
+     * @param threshold threshold for speech start
+     * @param samplingRate audio sampling rate, only available for [8k, 16k]
+     * @param minSpeechDurationMs Minimum speech length in millis, any speech duration that smaller than this value would not be considered as speech
+     * @param maxSpeechDurationSeconds Maximum speech length in millis, recommend to be set as Float.POSITIVE_INFINITY
+     * @param minSilenceDurationMs Minimum silence length in millis, any silence duration that smaller than this value would not be considered as silence
+     * @param speechPadMs Additional pad millis for speech start and end
+     * @throws OrtException
+     */
+    public SileroVadDetector(String onnxModelPath, float threshold, int samplingRate,
+                             int minSpeechDurationMs, float maxSpeechDurationSeconds,
+                             int minSilenceDurationMs, int speechPadMs) throws OrtException {
+        if (samplingRate != SAMPLING_RATE_8K && samplingRate != SAMPLING_RATE_16K) {
+            throw new IllegalArgumentException("Sampling rate not support, only available for [8000, 16000]");
+        }
+        this.model = new SileroVadOnnxModel(onnxModelPath);
+        this.samplingRate = samplingRate;
+        this.threshold = threshold;
+        this.negThreshold = threshold - THRESHOLD_GAP;
+        if (samplingRate == SAMPLING_RATE_16K) {
+            this.windowSizeSample = 512;
+        } else {
+            this.windowSizeSample = 256;
+        }
+        this.minSpeechSamples = samplingRate * minSpeechDurationMs / 1000f;
+        this.speechPadSamples = samplingRate * speechPadMs / 1000f;
+        this.maxSpeechSamples = samplingRate * maxSpeechDurationSeconds - windowSizeSample - 2 * speechPadSamples;
+        this.minSilenceSamples = samplingRate * minSilenceDurationMs / 1000f;
+        this.minSilenceSamplesAtMaxSpeech = samplingRate * 98 / 1000f;
+        this.reset();
+    }
+
+    /**
+     * Method to reset the state
+     */
+    public void reset() {
+        model.resetStates();
+    }
+
+    /**
+     * Get speech segment list by given wav-format file
+     * @param wavFile wav file
+     * @return list of speech segment
+     */
+    public List<SileroSpeechSegment> getSpeechSegmentList(File wavFile) {
+        reset();
+        try (AudioInputStream audioInputStream =  AudioSystem.getAudioInputStream(wavFile)){
+            List<Float> speechProbList = new ArrayList<>();
+            this.audioLengthSamples = audioInputStream.available() / 2;
+            byte[] data = new byte[this.windowSizeSample * 2];
+            int numBytesRead = 0;
+
+            while ((numBytesRead = audioInputStream.read(data)) != -1) {
+                if (numBytesRead <= 0) {
+                    break;
+                }
+                // Convert the byte array to a float array
+                float[] audioData = new float[data.length / 2];
+                for (int i = 0; i < audioData.length; i++) {
+                    audioData[i] = ((data[i * 2] & 0xff) | (data[i * 2 + 1] << 8)) / 32767.0f;
+                }
+
+                float speechProb = 0;
+                try {
+                    speechProb = model.call(new float[][]{audioData}, samplingRate)[0];
+                    speechProbList.add(speechProb);
+                } catch (OrtException e) {
+                    throw e;
+                }
+            }
+            return calculateProb(speechProbList);
+        } catch (Exception e) {
+            throw new RuntimeException("SileroVadDetector getSpeechTimeList with error", e);
+        }
+    }
+
+    /**
+     * Calculate speech segement by probability
+     * @param speechProbList speech probability list
+     * @return list of speech segment
+     */
+    private List<SileroSpeechSegment> calculateProb(List<Float> speechProbList) {
+        List<SileroSpeechSegment> result = new ArrayList<>();
+        boolean triggered = false;
+        int tempEnd = 0, prevEnd = 0, nextStart = 0;
+        SileroSpeechSegment segment = new SileroSpeechSegment();
+
+        for (int i = 0; i < speechProbList.size(); i++) {
+            Float speechProb = speechProbList.get(i);
+            if (speechProb >= threshold && (tempEnd != 0)) {
+                tempEnd = 0;
+                if (nextStart < prevEnd) {
+                    nextStart = windowSizeSample * i;
+                }
+            }
+
+            if (speechProb >= threshold && !triggered) {
+                triggered = true;
+                segment.setStartOffset(windowSizeSample * i);
+                continue;
+            }
+
+            if (triggered && (windowSizeSample * i) - segment.getStartOffset() > maxSpeechSamples) {
+                if (prevEnd != 0) {
+                    segment.setEndOffset(prevEnd);
+                    result.add(segment);
+                    segment = new SileroSpeechSegment();
+                    if (nextStart < prevEnd) {
+                        triggered = false;
+                    }else {
+                        segment.setStartOffset(nextStart);
+                    }
+                    prevEnd = 0;
+                    nextStart = 0;
+                    tempEnd = 0;
+                }else {
+                    segment.setEndOffset(windowSizeSample * i);
+                    result.add(segment);
+                    segment = new SileroSpeechSegment();
+                    prevEnd = 0;
+                    nextStart = 0;
+                    tempEnd = 0;
+                    triggered = false;
+                    continue;
+                }
+            }
+
+            if (speechProb < negThreshold && triggered) {
+                if (tempEnd == 0) {
+                    tempEnd = windowSizeSample * i;
+                }
+                if (((windowSizeSample * i) - tempEnd) > minSilenceSamplesAtMaxSpeech) {
+                    prevEnd = tempEnd;
+                }
+                if ((windowSizeSample * i) - tempEnd < minSilenceSamples) {
+                    continue;
+                }else {
+                    segment.setEndOffset(tempEnd);
+                    if ((segment.getEndOffset() - segment.getStartOffset()) > minSpeechSamples) {
+                        result.add(segment);
+                    }
+                    segment = new SileroSpeechSegment();
+                    prevEnd = 0;
+                    nextStart = 0;
+                    tempEnd = 0;
+                    triggered = false;
+                    continue;
+                }
+            }
+        }
+
+        if (segment.getStartOffset() != null && (audioLengthSamples - segment.getStartOffset()) > minSpeechSamples) {
+            segment.setEndOffset(audioLengthSamples);
+            result.add(segment);
+        }
+
+        for (int i = 0; i < result.size(); i++) {
+            SileroSpeechSegment item = result.get(i);
+            if (i == 0) {
+                item.setStartOffset((int)(Math.max(0,item.getStartOffset() - speechPadSamples)));
+            }
+            if (i != result.size() - 1) {
+                SileroSpeechSegment nextItem = result.get(i + 1);
+                Integer silenceDuration = nextItem.getStartOffset() - item.getEndOffset();
+                if(silenceDuration < 2 * speechPadSamples){
+                    item.setEndOffset(item.getEndOffset() + (silenceDuration / 2 ));
+                    nextItem.setStartOffset(Math.max(0, nextItem.getStartOffset() - (silenceDuration / 2)));
+                } else {
+                    item.setEndOffset((int)(Math.min(audioLengthSamples, item.getEndOffset() + speechPadSamples)));
+                    nextItem.setStartOffset((int)(Math.max(0,nextItem.getStartOffset() - speechPadSamples)));
+                }
+            }else {
+                item.setEndOffset((int)(Math.min(audioLengthSamples, item.getEndOffset() + speechPadSamples)));
+            }
+        }
+
+        return mergeListAndCalculateSecond(result, samplingRate);
+    }
+
+    private List<SileroSpeechSegment> mergeListAndCalculateSecond(List<SileroSpeechSegment> original, Integer samplingRate) {
+        List<SileroSpeechSegment> result = new ArrayList<>();
+        if (original == null || original.size() == 0) {
+            return result;
+        }
+        Integer left = original.get(0).getStartOffset();
+        Integer right = original.get(0).getEndOffset();
+        if (original.size() > 1) {
+            original.sort(Comparator.comparingLong(SileroSpeechSegment::getStartOffset));
+            for (int i = 1; i < original.size(); i++) {
+                SileroSpeechSegment segment = original.get(i);
+
+                if (segment.getStartOffset() > right) {
+                    result.add(new SileroSpeechSegment(left, right,
+                            calculateSecondByOffset(left, samplingRate), calculateSecondByOffset(right, samplingRate)));
+                    left = segment.getStartOffset();
+                    right = segment.getEndOffset();
+                } else {
+                    right = Math.max(right, segment.getEndOffset());
+                }
+            }
+            result.add(new SileroSpeechSegment(left, right,
+                    calculateSecondByOffset(left, samplingRate), calculateSecondByOffset(right, samplingRate)));
+        }else {
+            result.add(new SileroSpeechSegment(left, right,
+                    calculateSecondByOffset(left, samplingRate), calculateSecondByOffset(right, samplingRate)));
+        }
+        return result;
+    }
+
+    private Float calculateSecondByOffset(Integer offset, Integer samplingRate) {
+        float secondValue = offset * 1.0f / samplingRate;
+        return (float) Math.floor(secondValue * 1000.0f) / 1000.0f;
+    }
+}

examples/java-wav-file-example/src/main/java/org/example/SileroVadOnnxModel.java

@@ -0,0 +1,234 @@
+package org.example;
+
+import ai.onnxruntime.OnnxTensor;
+import ai.onnxruntime.OrtEnvironment;
+import ai.onnxruntime.OrtException;
+import ai.onnxruntime.OrtSession;
+import java.util.Arrays;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class SileroVadOnnxModel {
+    // Define private variable OrtSession
+    private final OrtSession session;
+    private float[][][] state;
+    private float[][] context;
+    // Define the last sample rate
+    private int lastSr = 0;
+    // Define the last batch size
+    private int lastBatchSize = 0;
+    // Define a list of supported sample rates
+    private static final List<Integer> SAMPLE_RATES = Arrays.asList(8000, 16000);
+
+    // Constructor
+    public SileroVadOnnxModel(String modelPath) throws OrtException {
+        // Get the ONNX runtime environment
+        OrtEnvironment env = OrtEnvironment.getEnvironment();
+        // Create an ONNX session options object
+        OrtSession.SessionOptions opts = new OrtSession.SessionOptions();
+        // Set the InterOp thread count to 1, InterOp threads are used for parallel processing of different computation graph operations
+        opts.setInterOpNumThreads(1);
+        // Set the IntraOp thread count to 1, IntraOp threads are used for parallel processing within a single operation
+        opts.setIntraOpNumThreads(1);
+        // Add a CPU device, setting to false disables CPU execution optimization
+        opts.addCPU(true);
+        // Create an ONNX session using the environment, model path, and options
+        session = env.createSession(modelPath, opts);
+        // Reset states
+        resetStates();
+    }
+
+    /**
+     * Reset states
+     */
+    void resetStates() {
+        state = new float[2][1][128];
+        context = new float[0][];
+        lastSr = 0;
+        lastBatchSize = 0;
+    }
+
+    public void close() throws OrtException {
+        session.close();
+    }
+
+    /**
+     * Define inner class ValidationResult
+     */
+    public static class ValidationResult {
+        public final float[][] x;
+        public final int sr;
+
+        // Constructor
+        public ValidationResult(float[][] x, int sr) {
+            this.x = x;
+            this.sr = sr;
+        }
+    }
+
+    /**
+     * Function to validate input data
+     */
+    private ValidationResult validateInput(float[][] x, int sr) {
+        // Process the input data with dimension 1
+        if (x.length == 1) {
+            x = new float[][]{x[0]};
+        }
+        // Throw an exception when the input data dimension is greater than 2
+        if (x.length > 2) {
+            throw new IllegalArgumentException("Incorrect audio data dimension: " + x[0].length);
+        }
+
+        // Process the input data when the sample rate is not equal to 16000 and is a multiple of 16000
+        if (sr != 16000 && (sr % 16000 == 0)) {
+            int step = sr / 16000;
+            float[][] reducedX = new float[x.length][];
+
+            for (int i = 0; i < x.length; i++) {
+                float[] current = x[i];
+                float[] newArr = new float[(current.length + step - 1) / step];
+
+                for (int j = 0, index = 0; j < current.length; j += step, index++) {
+                    newArr[index] = current[j];
+                }
+
+                reducedX[i] = newArr;
+            }
+
+            x = reducedX;
+            sr = 16000;
+        }
+
+        // If the sample rate is not in the list of supported sample rates, throw an exception
+        if (!SAMPLE_RATES.contains(sr)) {
+            throw new IllegalArgumentException("Only supports sample rates " + SAMPLE_RATES + " (or multiples of 16000)");
+        }
+
+        // If the input audio block is too short, throw an exception
+        if (((float) sr) / x[0].length > 31.25) {
+            throw new IllegalArgumentException("Input audio is too short");
+        }
+
+        // Return the validated result
+        return new ValidationResult(x, sr);
+    }
+
+    private static float[][] concatenate(float[][] a, float[][] b) {
+        if (a.length != b.length) {
+            throw new IllegalArgumentException("The number of rows in both arrays must be the same.");
+        }
+
+        int rows = a.length;
+        int colsA = a[0].length;
+        int colsB = b[0].length;
+        float[][] result = new float[rows][colsA + colsB];
+
+        for (int i = 0; i < rows; i++) {
+            System.arraycopy(a[i], 0, result[i], 0, colsA);
+            System.arraycopy(b[i], 0, result[i], colsA, colsB);
+        }
+
+        return result;
+    }
+
+    private static float[][] getLastColumns(float[][] array, int contextSize) {
+        int rows = array.length;
+        int cols = array[0].length;
+
+        if (contextSize > cols) {
+            throw new IllegalArgumentException("contextSize cannot be greater than the number of columns in the array.");
+        }
+
+        float[][] result = new float[rows][contextSize];
+
+        for (int i = 0; i < rows; i++) {
+            System.arraycopy(array[i], cols - contextSize, result[i], 0, contextSize);
+        }
+
+        return result;
+    }
+
+    /**
+     * Method to call the ONNX model
+     */
+    public float[] call(float[][] x, int sr) throws OrtException {
+        ValidationResult result = validateInput(x, sr);
+        x = result.x;
+        sr = result.sr;
+        int numberSamples = 256;
+        if (sr == 16000) {
+            numberSamples = 512;
+        }
+
+        if (x[0].length != numberSamples) {
+            throw new IllegalArgumentException("Provided number of samples is " + x[0].length + " (Supported values: 256 for 8000 sample rate, 512 for 16000)");
+        }
+
+        int batchSize = x.length;
+
+        int contextSize = 32;
+        if (sr == 16000) {
+            contextSize = 64;
+        }
+
+        if (lastBatchSize == 0) {
+            resetStates();
+        }
+        if (lastSr != 0 && lastSr != sr) {
+            resetStates();
+        }
+        if (lastBatchSize != 0 && lastBatchSize != batchSize) {
+            resetStates();
+        }
+
+        if (context.length == 0) {
+            context = new float[batchSize][contextSize];
+        }
+
+        x = concatenate(context, x);
+
+        OrtEnvironment env = OrtEnvironment.getEnvironment();
+
+        OnnxTensor inputTensor = null;
+        OnnxTensor stateTensor = null;
+        OnnxTensor srTensor = null;
+        OrtSession.Result ortOutputs = null;
+
+        try {
+            // Create input tensors
+            inputTensor = OnnxTensor.createTensor(env, x);
+            stateTensor = OnnxTensor.createTensor(env, state);
+            srTensor = OnnxTensor.createTensor(env, new long[]{sr});
+
+            Map<String, OnnxTensor> inputs = new HashMap<>();
+            inputs.put("input", inputTensor);
+            inputs.put("sr", srTensor);
+            inputs.put("state", stateTensor);
+
+            // Call the ONNX model for calculation
+            ortOutputs = session.run(inputs);
+            // Get the output results
+            float[][] output = (float[][]) ortOutputs.get(0).getValue();
+            state = (float[][][]) ortOutputs.get(1).getValue();
+
+            context = getLastColumns(x, contextSize);
+            lastSr = sr;
+            lastBatchSize = batchSize;
+            return output[0];
+        } finally {
+            if (inputTensor != null) {
+                inputTensor.close();
+            }
+            if (stateTensor != null) {
+                stateTensor.close();
+            }
+            if (srTensor != null) {
+                srTensor.close();
+            }
+            if (ortOutputs != null) {
+                ortOutputs.close();
+            }
+        }
+    }
+}

examples/microphone_and_webRTC_integration/microphone_and_webRTC_integration.py

@@ -186,7 +186,7 @@ if __name__ == '__main__':
                         help="same as trig_sum, but for switching from triggered to non-triggered state (non-speech)")
 
     parser.add_argument('-N', '--num_steps', type=int, default=8,
-                        help="nubmer of overlapping windows to split audio chunk into (we recommend 4 or 8)")
+                        help="number of overlapping windows to split audio chunk into (we recommend 4 or 8)")
 
     parser.add_argument('-nspw', '--num_samples_per_window', type=int, default=4000,
                         help="number of samples in each window, our models were trained using 4000 samples (250 ms) per window, so this is preferable value (lesser values reduce quality)")
@@ -198,4 +198,4 @@ if __name__ == '__main__':
                         help=" minimum silence duration in samples between to separate speech chunks")
     ARGS = parser.parse_args()
     ARGS.rate=DEFAULT_SAMPLE_RATE
-    main(ARGS)
+    main(ARGS)

examples/parallel_example.ipynb

@@ -0,0 +1,149 @@
+{
+ "cells": [
+  {
+   "attachments": {},
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Install Dependencies"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "# !pip install -q torchaudio\n",
+    "SAMPLING_RATE = 16000\n",
+    "import torch\n",
+    "from pprint import pprint\n",
+    "\n",
+    "torch.set_num_threads(1)\n",
+    "NUM_PROCESS=4 # set to the number of CPU cores in the machine\n",
+    "NUM_COPIES=8\n",
+    "# download wav files, make multiple copies\n",
+    "for idx in range(NUM_COPIES):\n",
+    "    torch.hub.download_url_to_file('https://models.silero.ai/vad_models/en.wav', f\"en_example{idx}.wav\")\n"
+   ]
+  },
+  {
+   "attachments": {},
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Load VAD model from torch hub"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "model, utils = torch.hub.load(repo_or_dir='snakers4/silero-vad',\n",
+    "                                model='silero_vad',\n",
+    "                                force_reload=True,\n",
+    "                                onnx=False)\n",
+    "\n",
+    "(get_speech_timestamps,\n",
+    "save_audio,\n",
+    "read_audio,\n",
+    "VADIterator,\n",
+    "collect_chunks) = utils"
+   ]
+  },
+  {
+   "attachments": {},
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Define a vad process function"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "import multiprocessing\n",
+    "\n",
+    "vad_models = dict()\n",
+    "\n",
+    "def init_model(model):\n",
+    "  pid = multiprocessing.current_process().pid\n",
+    "  model, _ = torch.hub.load(repo_or_dir='snakers4/silero-vad',\n",
+    "                                model='silero_vad',\n",
+    "                                force_reload=False,\n",
+    "                                onnx=False)\n",
+    "  vad_models[pid] = model\n",
+    "\n",
+    "def vad_process(audio_file: str):\n",
+    "    \n",
+    "    pid = multiprocessing.current_process().pid\n",
+    "    \n",
+    "    with torch.no_grad():\n",
+    "        wav = read_audio(audio_file, sampling_rate=SAMPLING_RATE)\n",
+    "        return get_speech_timestamps(\n",
+    "            wav,\n",
+    "            vad_models[pid],\n",
+    "            0.46,  # speech prob threshold\n",
+    "            16000,  # sample rate\n",
+    "            300,  # min speech duration in ms\n",
+    "            20,  # max speech duration in seconds\n",
+    "            600,  # min silence duration\n",
+    "            512,  # window size\n",
+    "            200,  # spech pad ms\n",
+    "        )"
+   ]
+  },
+  {
+   "attachments": {},
+   "cell_type": "markdown",
+   "metadata": {},
+   "source": [
+    "## Parallelization"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {},
+   "outputs": [],
+   "source": [
+    "from concurrent.futures import ProcessPoolExecutor, as_completed\n",
+    "\n",
+    "futures = []\n",
+    "\n",
+    "with ProcessPoolExecutor(max_workers=NUM_PROCESS, initializer=init_model, initargs=(model,)) as ex:\n",
+    "    for i in range(NUM_COPIES):\n",
+    "        futures.append(ex.submit(vad_process, f\"en_example{idx}.wav\"))\n",
+    "\n",
+    "for finished in as_completed(futures):\n",
+    "    pprint(finished.result())"
+   ]
+  }
+ ],
+ "metadata": {
+  "kernelspec": {
+   "display_name": "diarization",
+   "language": "python",
+   "name": "python3"
+  },
+  "language_info": {
+   "codemirror_mode": {
+    "name": "ipython",
+    "version": 3
+   },
+   "file_extension": ".py",
+   "mimetype": "text/x-python",
+   "name": "python",
+   "nbconvert_exporter": "python",
+   "pygments_lexer": "ipython3",
+   "version": "3.9.15"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 2
+}

examples/pyaudio-streaming/pyaudio-streaming-examples.ipynb

@@ -31,11 +31,11 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "#!pip install numpy==1.20.2\n",
-    "#!pip install torch==1.9.0\n",
-    "#!pip install matplotlib==3.4.2\n",
-    "#!pip install torchaudio==0.9.0\n",
-    "#!pip install soundfile==0.10.3.post1\n",
+    "#!pip install numpy==2.0.2\n",
+    "#!pip install torch==2.4.1\n",
+    "#!pip install matplotlib==3.9.2\n",
+    "#!pip install torchaudio==2.4.1\n",
+    "#!pip install soundfile==0.12.1\n",
     "#!pip install pyaudio==0.2.11"
    ]
   },
@@ -61,7 +61,6 @@
     "import torchaudio\n",
     "import matplotlib\n",
     "import matplotlib.pylab as plt\n",
-    "torchaudio.set_audio_backend(\"soundfile\")\n",
     "import pyaudio"
    ]
   },
@@ -118,7 +117,7 @@
     "    abs_max = np.abs(sound).max()\n",
     "    sound = sound.astype('float32')\n",
     "    if abs_max > 0:\n",
-    "        sound *= 1/abs_max\n",
+    "        sound *= 1/32768\n",
     "    sound = sound.squeeze()  # depends on the use case\n",
     "    return sound"
    ]
@@ -162,7 +161,7 @@
    "metadata": {},
    "outputs": [],
    "source": [
-    "num_samples = 1536"
+    "num_samples = 512"
    ]
   },
   {
@@ -180,6 +179,8 @@
     "data = []\n",
     "voiced_confidences = []\n",
     "\n",
+    "frames_to_record = 50\n",
+    "\n",
     "print(\"Started Recording\")\n",
     "for i in range(0, frames_to_record):\n",
     "    \n",
@@ -296,7 +297,7 @@
  ],
  "metadata": {
   "kernelspec": {
-   "display_name": "Python 3",
+   "display_name": "Python 3 (ipykernel)",
    "language": "python",
    "name": "python3"
   },
@@ -310,7 +311,7 @@
    "name": "python",
    "nbconvert_exporter": "python",
    "pygments_lexer": "ipython3",
-   "version": "3.7.10"
+   "version": "3.9.10"
   },
   "toc": {
    "base_numbering": 1,

examples/rust-example/.gitignore

@@ -0,0 +1,2 @@
+target/
+recorder.wav

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@@ -0,0 +1,781 @@
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examples/rust-example/Cargo.toml

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+edition = "2021"
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+hound = "3"

examples/rust-example/README.md

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+# Stream example in Rust
+Made after [C++ stream example](https://github.com/snakers4/silero-vad/tree/master/examples/cpp)
+
+## Dependencies
+- To build Rust crate `ort` you need `cc` installed.
+
+## Usage
+Just
+```
+cargo run
+```
+If you run example outside of this repo adjust environment variable
+```
+SILERO_MODEL_PATH=/path/to/silero_vad.onnx cargo run 
+```
+If you need to test against other wav file, not `recorder.wav`, specify it as the first argument
+```
+cargo run -- /path/to/audio/file.wav
+```

examples/rust-example/src/main.rs

@@ -0,0 +1,36 @@
+mod silero;
+mod utils;
+mod vad_iter;
+
+fn main() {
+    let model_path = std::env::var("SILERO_MODEL_PATH")
+        .unwrap_or_else(|_| String::from("../../files/silero_vad.onnx"));
+    let audio_path = std::env::args()
+        .nth(1)
+        .unwrap_or_else(|| String::from("recorder.wav"));
+    let mut wav_reader = hound::WavReader::open(audio_path).unwrap();
+    let sample_rate = match wav_reader.spec().sample_rate {
+        8000 => utils::SampleRate::EightkHz,
+        16000 => utils::SampleRate::SixteenkHz,
+        _ => panic!("Unsupported sample rate. Expect 8 kHz or 16 kHz."),
+    };
+    if wav_reader.spec().sample_format != hound::SampleFormat::Int {
+        panic!("Unsupported sample format. Expect Int.");
+    }
+    let content = wav_reader
+        .samples()
+        .filter_map(|x| x.ok())
+        .collect::<Vec<i16>>();
+    assert!(!content.is_empty());
+    let silero = silero::Silero::new(sample_rate, model_path).unwrap();
+    let vad_params = utils::VadParams {
+        sample_rate: sample_rate.into(),
+        ..Default::default()
+    };
+    let mut vad_iterator = vad_iter::VadIter::new(silero, vad_params);
+    vad_iterator.process(&content).unwrap();
+    for timestamp in vad_iterator.speeches() {
+        println!("{}", timestamp);
+    }
+    println!("Finished.");
+}

examples/rust-example/src/silero.rs

@@ -0,0 +1,54 @@
+use crate::utils;
+use ndarray::{s, Array, Array2, ArrayBase, ArrayD, Dim, IxDynImpl, OwnedRepr};
+use std::path::Path;
+
+#[derive(Debug)]
+pub struct Silero {
+    session: ort::Session,
+    sample_rate: ArrayBase<OwnedRepr<i64>, Dim<[usize; 1]>>,
+    state: ArrayBase<OwnedRepr<f32>, Dim<IxDynImpl>>,
+}
+
+impl Silero {
+    pub fn new(
+        sample_rate: utils::SampleRate,
+        model_path: impl AsRef<Path>,
+    ) -> Result<Self, ort::Error> {
+        let session = ort::Session::builder()?.commit_from_file(model_path)?;
+        let state = ArrayD::<f32>::zeros([2, 1, 128].as_slice());
+        let sample_rate = Array::from_shape_vec([1], vec![sample_rate.into()]).unwrap();
+        Ok(Self {
+            session,
+            sample_rate,
+            state,
+        })
+    }
+
+    pub fn reset(&mut self) {
+        self.state = ArrayD::<f32>::zeros([2, 1, 128].as_slice());
+    }
+
+    pub fn calc_level(&mut self, audio_frame: &[i16]) -> Result<f32, ort::Error> {
+        let data = audio_frame
+            .iter()
+            .map(|x| (*x as f32) / (i16::MAX as f32))
+            .collect::<Vec<_>>();
+        let mut frame = Array2::<f32>::from_shape_vec([1, data.len()], data).unwrap();
+        frame = frame.slice(s![.., ..480]).to_owned();
+        let inps = ort::inputs![
+            frame,
+            std::mem::take(&mut self.state),
+            self.sample_rate.clone(),
+        ]?;
+        let res = self
+            .session
+            .run(ort::SessionInputs::ValueSlice::<3>(&inps))?;
+        self.state = res["stateN"].try_extract_tensor().unwrap().to_owned();
+        Ok(*res["output"]
+            .try_extract_raw_tensor::<f32>()
+            .unwrap()
+            .1
+            .first()
+            .unwrap())
+    }
+}

examples/rust-example/src/utils.rs

@@ -0,0 +1,60 @@
+#[derive(Debug, Clone, Copy)]
+pub enum SampleRate {
+    EightkHz,
+    SixteenkHz,
+}
+
+impl From<SampleRate> for i64 {
+    fn from(value: SampleRate) -> Self {
+        match value {
+            SampleRate::EightkHz => 8000,
+            SampleRate::SixteenkHz => 16000,
+        }
+    }
+}
+
+impl From<SampleRate> for usize {
+    fn from(value: SampleRate) -> Self {
+        match value {
+            SampleRate::EightkHz => 8000,
+            SampleRate::SixteenkHz => 16000,
+        }
+    }
+}
+
+#[derive(Debug)]
+pub struct VadParams {
+    pub frame_size: usize,
+    pub threshold: f32,
+    pub min_silence_duration_ms: usize,
+    pub speech_pad_ms: usize,
+    pub min_speech_duration_ms: usize,
+    pub max_speech_duration_s: f32,
+    pub sample_rate: usize,
+}
+
+impl Default for VadParams {
+    fn default() -> Self {
+        Self {
+            frame_size: 64,
+            threshold: 0.5,
+            min_silence_duration_ms: 0,
+            speech_pad_ms: 64,
+            min_speech_duration_ms: 64,
+            max_speech_duration_s: f32::INFINITY,
+            sample_rate: 16000,
+        }
+    }
+}
+
+#[derive(Debug, Default)]
+pub struct TimeStamp {
+    pub start: i64,
+    pub end: i64,
+}
+
+impl std::fmt::Display for TimeStamp {
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
+        write!(f, "[start:{:08}, end:{:08}]", self.start, self.end)
+    }
+}

examples/rust-example/src/vad_iter.rs

@@ -0,0 +1,223 @@
+use crate::{silero, utils};
+
+const DEBUG_SPEECH_PROB: bool = true;
+#[derive(Debug)]
+pub struct VadIter {
+    silero: silero::Silero,
+    params: Params,
+    state: State,
+}
+
+impl VadIter {
+    pub fn new(silero: silero::Silero, params: utils::VadParams) -> Self {
+        Self {
+            silero,
+            params: Params::from(params),
+            state: State::new(),
+        }
+    }
+
+    pub fn process(&mut self, samples: &[i16]) -> Result<(), ort::Error> {
+        self.reset_states();
+        for audio_frame in samples.chunks_exact(self.params.frame_size_samples) {
+            let speech_prob: f32 = self.silero.calc_level(audio_frame)?;
+            self.state.update(&self.params, speech_prob);
+        }
+        self.state.check_for_last_speech(samples.len());
+        Ok(())
+    }
+
+    pub fn speeches(&self) -> &[utils::TimeStamp] {
+        &self.state.speeches
+    }
+}
+
+impl VadIter {
+    fn reset_states(&mut self) {
+        self.silero.reset();
+        self.state = State::new()
+    }
+}
+
+#[allow(unused)]
+#[derive(Debug)]
+struct Params {
+    frame_size: usize,
+    threshold: f32,
+    min_silence_duration_ms: usize,
+    speech_pad_ms: usize,
+    min_speech_duration_ms: usize,
+    max_speech_duration_s: f32,
+    sample_rate: usize,
+    sr_per_ms: usize,
+    frame_size_samples: usize,
+    min_speech_samples: usize,
+    speech_pad_samples: usize,
+    max_speech_samples: f32,
+    min_silence_samples: usize,
+    min_silence_samples_at_max_speech: usize,
+}
+
+impl From<utils::VadParams> for Params {
+    fn from(value: utils::VadParams) -> Self {
+        let frame_size = value.frame_size;
+        let threshold = value.threshold;
+        let min_silence_duration_ms = value.min_silence_duration_ms;
+        let speech_pad_ms = value.speech_pad_ms;
+        let min_speech_duration_ms = value.min_speech_duration_ms;
+        let max_speech_duration_s = value.max_speech_duration_s;
+        let sample_rate = value.sample_rate;
+        let sr_per_ms = sample_rate / 1000;
+        let frame_size_samples = frame_size * sr_per_ms;
+        let min_speech_samples = sr_per_ms * min_speech_duration_ms;
+        let speech_pad_samples = sr_per_ms * speech_pad_ms;
+        let max_speech_samples = sample_rate as f32 * max_speech_duration_s
+            - frame_size_samples as f32
+            - 2.0 * speech_pad_samples as f32;
+        let min_silence_samples = sr_per_ms * min_silence_duration_ms;
+        let min_silence_samples_at_max_speech = sr_per_ms * 98;
+        Self {
+            frame_size,
+            threshold,
+            min_silence_duration_ms,
+            speech_pad_ms,
+            min_speech_duration_ms,
+            max_speech_duration_s,
+            sample_rate,
+            sr_per_ms,
+            frame_size_samples,
+            min_speech_samples,
+            speech_pad_samples,
+            max_speech_samples,
+            min_silence_samples,
+            min_silence_samples_at_max_speech,
+        }
+    }
+}
+
+#[derive(Debug, Default)]
+struct State {
+    current_sample: usize,
+    temp_end: usize,
+    next_start: usize,
+    prev_end: usize,
+    triggered: bool,
+    current_speech: utils::TimeStamp,
+    speeches: Vec<utils::TimeStamp>,
+}
+
+impl State {
+    fn new() -> Self {
+        Default::default()
+    }
+
+    fn update(&mut self, params: &Params, speech_prob: f32) {
+        self.current_sample += params.frame_size_samples;
+        if speech_prob > params.threshold {
+            if self.temp_end != 0 {
+                self.temp_end = 0;
+                if self.next_start < self.prev_end {
+                    self.next_start = self
+                        .current_sample
+                        .saturating_sub(params.frame_size_samples)
+                }
+            }
+            if !self.triggered {
+                self.debug(speech_prob, params, "start");
+                self.triggered = true;
+                self.current_speech.start =
+                    self.current_sample as i64 - params.frame_size_samples as i64;
+            }
+            return;
+        }
+        if self.triggered
+            && (self.current_sample as i64 - self.current_speech.start) as f32
+                > params.max_speech_samples
+        {
+            if self.prev_end > 0 {
+                self.current_speech.end = self.prev_end as _;
+                self.take_speech();
+                if self.next_start < self.prev_end {
+                    self.triggered = false
+                } else {
+                    self.current_speech.start = self.next_start as _;
+                }
+                self.prev_end = 0;
+                self.next_start = 0;
+                self.temp_end = 0;
+            } else {
+                self.current_speech.end = self.current_sample as _;
+                self.take_speech();
+                self.prev_end = 0;
+                self.next_start = 0;
+                self.temp_end = 0;
+                self.triggered = false;
+            }
+            return;
+        }
+        if speech_prob >= (params.threshold - 0.15) && (speech_prob < params.threshold) {
+            if self.triggered {
+                self.debug(speech_prob, params, "speaking")
+            } else {
+                self.debug(speech_prob, params, "silence")
+            }
+        }
+        if self.triggered && speech_prob < (params.threshold - 0.15) {
+            self.debug(speech_prob, params, "end");
+            if self.temp_end == 0 {
+                self.temp_end = self.current_sample;
+            }
+            if self.current_sample.saturating_sub(self.temp_end)
+                > params.min_silence_samples_at_max_speech
+            {
+                self.prev_end = self.temp_end;
+            }
+            if self.current_sample.saturating_sub(self.temp_end) >= params.min_silence_samples {
+                self.current_speech.end = self.temp_end as _;
+                if self.current_speech.end - self.current_speech.start
+                    > params.min_speech_samples as _
+                {
+                    self.take_speech();
+                    self.prev_end = 0;
+                    self.next_start = 0;
+                    self.temp_end = 0;
+                    self.triggered = false;
+                }
+            }
+        }
+    }
+
+    fn take_speech(&mut self) {
+        self.speeches.push(std::mem::take(&mut self.current_speech)); // current speech becomes TimeStamp::default() due to take()
+    }
+
+    fn check_for_last_speech(&mut self, last_sample: usize) {
+        if self.current_speech.start > 0 {
+            self.current_speech.end = last_sample as _;
+            self.take_speech();
+            self.prev_end = 0;
+            self.next_start = 0;
+            self.temp_end = 0;
+            self.triggered = false;
+        }
+    }
+
+    fn debug(&self, speech_prob: f32, params: &Params, title: &str) {
+        if DEBUG_SPEECH_PROB {
+            let speech = self.current_sample as f32
+                - params.frame_size_samples as f32
+                - if title == "end" {
+                    params.speech_pad_samples
+                } else {
+                    0
+                } as f32; // minus window_size_samples to get precise start time point.
+            println!(
+                "[{:10}: {:.3} s ({:.3}) {:8}]",
+                title,
+                speech / params.sample_rate as f32,
+                speech_prob,
+                self.current_sample - params.frame_size_samples,
+            );
+        }
+    }
+}

files/lang_dict_95.json

@@ -1 +0,0 @@
-{"59": "mg, Malagasy", "76": "tk, Turkmen", "20": "lb, Luxembourgish, Letzeburgesch", "62": "or, Oriya", "30": "en, English", "26": "oc, Occitan", "69": "no, Norwegian", "77": "sr, Serbian", "90": "bs, Bosnian", "71": "el, Greek, Modern (1453\u2013)", "15": "az, Azerbaijani", "12": "lo, Lao", "85": "zh-HK, Chinese", "79": "cs, Czech", "43": "sv, Swedish", "37": "mn, Mongolian", "32": "fi, Finnish", "51": "tg, Tajik", "46": "am, Amharic", "17": "nn, Norwegian Nynorsk", "40": "ja, Japanese", "8": "it, Italian", "21": "ha, Hausa", "11": "as, Assamese", "29": "fa, Persian", "82": "bn, Bengali", "54": "mk, Macedonian", "31": "sw, Swahili", "45": "vi, Vietnamese", "41": "ur, Urdu", "74": "bo, Tibetan", "4": "hi, Hindi", "86": "mr, Marathi", "3": "fy-NL, Western Frisian", "65": "sk, Slovak", "2": "ln, Lingala", "92": "gl, Galician", "53": "sn, Shona", "87": "su, Sundanese", "35": "tt, Tatar", "93": "kn, Kannada", "6": "yo, Yoruba", "27": "ps, Pashto, Pushto", "34": "hy, Armenian", "25": "pa-IN, Punjabi, Panjabi", "23": "nl, Dutch, Flemish", "48": "th, Thai", "73": "mt, Maltese", "55": "ar, Arabic", "89": "ba, Bashkir", "78": "bg, Bulgarian", "42": "yi, Yiddish", "5": "ru, Russian", "84": "sv-SE, Swedish", "80": "tr, Turkish", "33": "sq, Albanian", "38": "kk, Kazakh", "50": "pl, Polish", "9": "hr, Croatian", "66": "ky, Kirghiz, Kyrgyz", "49": "hu, Hungarian", "10": "si, Sinhala, Sinhalese", "56": "la, Latin", "75": "de, German", "14": "ko, Korean", "22": "id, Indonesian", "47": "sl, Slovenian", "57": "be, Belarusian", "36": "ta, Tamil", "7": "da, Danish", "91": "sd, Sindhi", "28": "et, Estonian", "63": "pt, Portuguese", "60": "ne, Nepali", "94": "zh-TW, Chinese", "18": "zh-CN, Chinese", "88": "rw, Kinyarwanda", "19": "es, Spanish, Castilian", "39": "ht, Haitian, Haitian Creole", "64": "tl, Tagalog", "83": "ms, Malay", "70": "ro, Romanian, Moldavian, Moldovan", "68": "pa, Punjabi, Panjabi", "52": "uz, Uzbek", "58": "km, Central Khmer", "67": "my, Burmese", "0": "fr, French", "24": "af, Afrikaans", "16": "gu, Gujarati", "81": "so, Somali", "13": "uk, Ukrainian", "44": "ca, Catalan, Valencian", "72": "ml, Malayalam", "61": "te, Telugu", "1": "zh, Chinese"}

files/lang_group_dict_95.json

@@ -1 +0,0 @@
-{"0": ["Afrikaans", "Dutch, Flemish", "Western Frisian"], "1": ["Turkish", "Azerbaijani"], "2": ["Russian", "Slovak", "Ukrainian", "Czech", "Polish", "Belarusian"], "3": ["Bulgarian", "Macedonian", "Serbian", "Croatian", "Bosnian", "Slovenian"], "4": ["Norwegian Nynorsk", "Swedish", "Danish", "Norwegian"], "5": ["English"], "6": ["Finnish", "Estonian"], "7": ["Yiddish", "Luxembourgish, Letzeburgesch", "German"], "8": ["Spanish", "Occitan", "Portuguese", "Catalan, Valencian", "Galician", "Spanish, Castilian", "Italian"], "9": ["Maltese", "Arabic"], "10": ["Marathi"], "11": ["Hindi", "Urdu"], "12": ["Lao", "Thai"], "13": ["Malay", "Indonesian"], "14": ["Romanian, Moldavian, Moldovan"], "15": ["Tagalog"], "16": ["Tajik", "Persian"], "17": ["Kazakh", "Uzbek", "Kirghiz, Kyrgyz"], "18": ["Kinyarwanda"], "19": ["Tatar", "Bashkir"], "20": ["French"], "21": ["Chinese"], "22": ["Lingala"], "23": ["Yoruba"], "24": ["Sinhala, Sinhalese"], "25": ["Assamese"], "26": ["Korean"], "27": ["Gujarati"], "28": ["Hausa"], "29": ["Punjabi, Panjabi"], "30": ["Pashto, Pushto"], "31": ["Swahili"], "32": ["Albanian"], "33": ["Armenian"], "34": ["Mongolian"], "35": ["Tamil"], "36": ["Haitian, Haitian Creole"], "37": ["Japanese"], "38": ["Vietnamese"], "39": ["Amharic"], "40": ["Hungarian"], "41": ["Shona"], "42": ["Latin"], "43": ["Central Khmer"], "44": ["Malagasy"], "45": ["Nepali"], "46": ["Telugu"], "47": ["Oriya"], "48": ["Burmese"], "49": ["Greek, Modern (1453\u2013)"], "50": ["Malayalam"], "51": ["Tibetan"], "52": ["Turkmen"], "53": ["Somali"], "54": ["Bengali"], "55": ["Sundanese"], "56": ["Sindhi"], "57": ["Kannada"]}

hubconf.py

@@ -1,22 +1,26 @@
 dependencies = ['torch', 'torchaudio']
 import torch
-import json
-from utils_vad import (init_jit_model,
-                       get_speech_timestamps,
-                       get_number_ts,
-                       get_language,
-                       get_language_and_group,
-                       save_audio,
-                       read_audio,
-                       VADIterator,
-                       collect_chunks,
-                       drop_chunks,
-                       Validator,
-                       OnnxWrapper)
+import os
+import sys
+sys.path.insert(0, os.path.join(os.path.dirname(__file__), 'src'))
+from silero_vad.utils_vad import (init_jit_model,
+                                  get_speech_timestamps,
+                                  save_audio,
+                                  read_audio,
+                                  VADIterator,
+                                  collect_chunks,
+                                  OnnxWrapper)
 
 
 def versiontuple(v):
-    return tuple(map(int, (v.split('+')[0].split("."))))
+    splitted = v.split('+')[0].split(".")
+    version_list = []
+    for i in splitted:
+        try:
+            version_list.append(int(i))
+        except:
+            version_list.append(0)
+    return tuple(version_list)
 
 
 def silero_vad(onnx=False, force_onnx_cpu=False):
@@ -31,11 +35,11 @@ def silero_vad(onnx=False, force_onnx_cpu=False):
         if versiontuple(installed_version) < versiontuple(supported_version):
             raise Exception(f'Please install torch {supported_version} or greater ({installed_version} installed)')
 
-    hub_dir = torch.hub.get_dir()
+    model_dir = os.path.join(os.path.dirname(__file__), 'src', 'silero_vad', 'data')
     if onnx:
-        model = OnnxWrapper(f'{hub_dir}/snakers4_silero-vad_master/files/silero_vad.onnx', force_onnx_cpu)
+        model = OnnxWrapper(os.path.join(model_dir, 'silero_vad.onnx'), force_onnx_cpu)
     else:
-        model = init_jit_model(model_path=f'{hub_dir}/snakers4_silero-vad_master/files/silero_vad.jit')
+        model = init_jit_model(os.path.join(model_dir, 'silero_vad.jit'))
     utils = (get_speech_timestamps,
              save_audio,
              read_audio,
@@ -43,62 +47,3 @@ def silero_vad(onnx=False, force_onnx_cpu=False):
              collect_chunks)
 
     return model, utils
-
-
-def silero_number_detector(onnx=False, force_onnx_cpu=False):
-    """Silero Number Detector
-    Returns a model with a set of utils
-    Please see https://github.com/snakers4/silero-vad for usage examples
-    """
-    if onnx:
-        url = 'https://models.silero.ai/vad_models/number_detector.onnx'
-    else:
-        url = 'https://models.silero.ai/vad_models/number_detector.jit'
-    model = Validator(url, force_onnx_cpu)
-    utils = (get_number_ts,
-             save_audio,
-             read_audio,
-             collect_chunks,
-             drop_chunks)
-
-    return model, utils
-
-
-def silero_lang_detector(onnx=False, force_onnx_cpu=False):
-    """Silero Language Classifier
-    Returns a model with a set of utils
-    Please see https://github.com/snakers4/silero-vad for usage examples
-    """
-    if onnx:
-        url = 'https://models.silero.ai/vad_models/number_detector.onnx'
-    else:
-        url = 'https://models.silero.ai/vad_models/number_detector.jit'
-    model = Validator(url, force_onnx_cpu)
-    utils = (get_language,
-             read_audio)
-
-    return model, utils
-
-
-def silero_lang_detector_95(onnx=False, force_onnx_cpu=False):
-    """Silero Language Classifier (95 languages)
-    Returns a model with a set of utils
-    Please see https://github.com/snakers4/silero-vad for usage examples
-    """
-
-    hub_dir = torch.hub.get_dir()
-    if onnx:
-        url = 'https://models.silero.ai/vad_models/lang_classifier_95.onnx'
-    else:
-        url = 'https://models.silero.ai/vad_models/lang_classifier_95.jit'
-    model = Validator(url, force_onnx_cpu)
-
-    with open(f'{hub_dir}/snakers4_silero-vad_master/files/lang_dict_95.json', 'r') as f:
-        lang_dict = json.load(f)
-
-    with open(f'{hub_dir}/snakers4_silero-vad_master/files/lang_group_dict_95.json', 'r') as f:
-        lang_group_dict = json.load(f)
-
-    utils = (get_language_and_group, read_audio)
-
-    return model, lang_dict, lang_group_dict, utils

pyproject.toml

@@ -0,0 +1,35 @@
+[build-system]
+requires = ["hatchling"]
+build-backend = "hatchling.build"
+[project]
+name = "silero-vad"
+version = "5.1"
+authors = [
+  {name="Silero Team", email="hello@silero.ai"},
+]
+description = "Voice Activity Detector (VAD) by Silero"
+readme = "README.md"
+requires-python = ">=3.8"
+classifiers = [
+    "Development Status :: 5 - Production/Stable",
+    "License :: OSI Approved :: MIT License",
+    "Operating System :: OS Independent",
+    "Intended Audience :: Science/Research",
+    "Intended Audience :: Developers",
+    "Programming Language :: Python :: 3.8",
+    "Programming Language :: Python :: 3.9",
+    "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Topic :: Scientific/Engineering :: Artificial Intelligence",
+    "Topic :: Scientific/Engineering",
+]
+dependencies = [
+  "torch>=1.12.0",
+  "torchaudio>=0.12.0",
+  "onnxruntime>=1.16.1",
+]
+
+[project.urls]
+Homepage = "https://github.com/snakers4/silero-vad"
+Issues = "https://github.com/snakers4/silero-vad/issues"

silero-vad.ipynb

@@ -1,14 +1,5 @@
 {
  "cells": [
-  {
-   "cell_type": "markdown",
-   "metadata": {
-    "id": "FpMplOCA2Fwp"
-   },
-   "source": [
-    "#VAD"
-   ]
-  },
   {
    "cell_type": "markdown",
    "metadata": {
@@ -52,20 +43,30 @@
    },
    "outputs": [],
    "source": [
+    "USE_PIP = True # download model using pip package or torch.hub\n",
     "USE_ONNX = False # change this to True if you want to test onnx model\n",
     "if USE_ONNX:\n",
     "    !pip install -q onnxruntime\n",
-    "  \n",
-    "model, utils = torch.hub.load(repo_or_dir='snakers4/silero-vad',\n",
-    "                              model='silero_vad',\n",
-    "                              force_reload=True,\n",
-    "                              onnx=USE_ONNX)\n",
+    "if USE_PIP:\n",
+    "  !pip install -q silero-vad\n",
+    "  from silero_vad import (load_silero_vad,\n",
+    "                          read_audio,\n",
+    "                          get_speech_timestamps,\n",
+    "                          save_audio,\n",
+    "                          VADIterator,\n",
+    "                          collect_chunks)\n",
+    "  model = load_silero_vad(onnx=USE_ONNX)\n",
+    "else:\n",
+    "  model, utils = torch.hub.load(repo_or_dir='snakers4/silero-vad',\n",
+    "                                model='silero_vad',\n",
+    "                                force_reload=True,\n",
+    "                                onnx=USE_ONNX)\n",
     "\n",
-    "(get_speech_timestamps,\n",
-    " save_audio,\n",
-    " read_audio,\n",
-    " VADIterator,\n",
-    " collect_chunks) = utils"
+    "  (get_speech_timestamps,\n",
+    "  save_audio,\n",
+    "  read_audio,\n",
+    "  VADIterator,\n",
+    "  collect_chunks) = utils"
    ]
   },
   {
@@ -74,16 +75,7 @@
     "id": "fXbbaUO3jsrw"
    },
    "source": [
-    "## Full Audio"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {
-    "id": "RAfJPb_a-Auj"
-   },
-   "source": [
-    "**Speech timestapms from full audio**"
+    "## Speech timestapms from full audio"
    ]
   },
   {
@@ -110,10 +102,33 @@
    "source": [
     "# merge all speech chunks to one audio\n",
     "save_audio('only_speech.wav',\n",
-    "           collect_chunks(speech_timestamps, wav), sampling_rate=SAMPLING_RATE) \n",
+    "           collect_chunks(speech_timestamps, wav), sampling_rate=SAMPLING_RATE)\n",
     "Audio('only_speech.wav')"
    ]
   },
+  {
+   "cell_type": "markdown",
+   "metadata": {
+    "id": "zeO1xCqxUC6w"
+   },
+   "source": [
+    "## Entire audio inference"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "id": "LjZBcsaTT7Mk"
+   },
+   "outputs": [],
+   "source": [
+    "wav = read_audio('en_example.wav', sampling_rate=SAMPLING_RATE)\n",
+    "# audio is being splitted into 31.25 ms long pieces\n",
+    "# so output length equals ceil(input_length * 31.25 / SAMPLING_RATE)\n",
+    "predicts = model.audio_forward(wav, sr=SAMPLING_RATE)"
+   ]
+  },
   {
    "cell_type": "markdown",
    "metadata": {
@@ -133,10 +148,10 @@
    "source": [
     "## using VADIterator class\n",
     "\n",
-    "vad_iterator = VADIterator(model)\n",
+    "vad_iterator = VADIterator(model, sampling_rate=SAMPLING_RATE)\n",
     "wav = read_audio(f'en_example.wav', sampling_rate=SAMPLING_RATE)\n",
     "\n",
-    "window_size_samples = 1536 # number of samples in a single audio chunk\n",
+    "window_size_samples = 512 if SAMPLING_RATE == 16000 else 256\n",
     "for i in range(0, len(wav), window_size_samples):\n",
     "    chunk = wav[i: i+ window_size_samples]\n",
     "    if len(chunk) < window_size_samples:\n",
@@ -159,7 +174,7 @@
     "\n",
     "wav = read_audio('en_example.wav', sampling_rate=SAMPLING_RATE)\n",
     "speech_probs = []\n",
-    "window_size_samples = 1536\n",
+    "window_size_samples = 512 if SAMPLING_RATE == 16000 else 256\n",
     "for i in range(0, len(wav), window_size_samples):\n",
     "    chunk = wav[i: i+ window_size_samples]\n",
     "    if len(chunk) < window_size_samples:\n",
@@ -170,238 +185,6 @@
     "\n",
     "print(speech_probs[:10]) # first 10 chunks predicts"
    ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {
-    "heading_collapsed": true,
-    "id": "36jY0niD2Fww"
-   },
-   "source": [
-    "# Number detector"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {
-    "heading_collapsed": true,
-    "hidden": true,
-    "id": "scd1DlS42Fwx"
-   },
-   "source": [
-    "## Install Dependencies"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "hidden": true,
-    "id": "Kq5gQuYq2Fwx"
-   },
-   "outputs": [],
-   "source": [
-    "#@title Install and Import Dependencies\n",
-    "\n",
-    "# this assumes that you have a relevant version of PyTorch installed\n",
-    "!pip install -q torchaudio\n",
-    "\n",
-    "SAMPLING_RATE = 16000\n",
-    "\n",
-    "import torch\n",
-    "torch.set_num_threads(1)\n",
-    "\n",
-    "from IPython.display import Audio\n",
-    "from pprint import pprint\n",
-    "# download example\n",
-    "torch.hub.download_url_to_file('https://models.silero.ai/vad_models/en_num.wav', 'en_number_example.wav')"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "id": "dPwCFHmFycUF"
-   },
-   "outputs": [],
-   "source": [
-    "USE_ONNX = False # change this to True if you want to test onnx model\n",
-    "if USE_ONNX:\n",
-    "    !pip install -q onnxruntime\n",
-    "  \n",
-    "model, utils = torch.hub.load(repo_or_dir='snakers4/silero-vad',\n",
-    "                              model='silero_number_detector',\n",
-    "                              force_reload=True,\n",
-    "                              onnx=USE_ONNX)\n",
-    "\n",
-    "(get_number_ts,\n",
-    " save_audio,\n",
-    " read_audio,\n",
-    " collect_chunks,\n",
-    " drop_chunks) = utils\n"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {
-    "heading_collapsed": true,
-    "hidden": true,
-    "id": "qhPa30ij2Fwy"
-   },
-   "source": [
-    "## Full audio"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "hidden": true,
-    "id": "EXpau6xq2Fwy"
-   },
-   "outputs": [],
-   "source": [
-    "wav = read_audio('en_number_example.wav', sampling_rate=SAMPLING_RATE)\n",
-    "# get number timestamps from full audio file\n",
-    "number_timestamps = get_number_ts(wav, model)\n",
-    "pprint(number_timestamps)"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "hidden": true,
-    "id": "u-KfXRhZ2Fwy"
-   },
-   "outputs": [],
-   "source": [
-    "# convert ms in timestamps to samples\n",
-    "for timestamp in number_timestamps:\n",
-    "    timestamp['start'] = int(timestamp['start'] * SAMPLING_RATE / 1000)\n",
-    "    timestamp['end'] = int(timestamp['end'] * SAMPLING_RATE / 1000)"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "hidden": true,
-    "id": "iwYEC4aZ2Fwy"
-   },
-   "outputs": [],
-   "source": [
-    "# merge all number chunks to one audio\n",
-    "save_audio('only_numbers.wav',\n",
-    "           collect_chunks(number_timestamps, wav), SAMPLING_RATE) \n",
-    "Audio('only_numbers.wav')"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "hidden": true,
-    "id": "fHaYejX12Fwy"
-   },
-   "outputs": [],
-   "source": [
-    "# drop all number chunks from audio\n",
-    "save_audio('no_numbers.wav',\n",
-    "           drop_chunks(number_timestamps, wav), SAMPLING_RATE) \n",
-    "Audio('no_numbers.wav')"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {
-    "heading_collapsed": true,
-    "id": "PnKtJKbq2Fwz"
-   },
-   "source": [
-    "# Language detector"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {
-    "heading_collapsed": true,
-    "hidden": true,
-    "id": "F5cAmMbP2Fwz"
-   },
-   "source": [
-    "## Install Dependencies"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "hidden": true,
-    "id": "Zu9D0t6n2Fwz"
-   },
-   "outputs": [],
-   "source": [
-    "#@title Install and Import Dependencies\n",
-    "\n",
-    "# this assumes that you have a relevant version of PyTorch installed\n",
-    "!pip install -q torchaudio\n",
-    "\n",
-    "SAMPLING_RATE = 16000\n",
-    "\n",
-    "import torch\n",
-    "torch.set_num_threads(1)\n",
-    "\n",
-    "from IPython.display import Audio\n",
-    "from pprint import pprint\n",
-    "# download example\n",
-    "torch.hub.download_url_to_file('https://models.silero.ai/vad_models/en.wav', 'en_example.wav')"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "id": "JfRKDZiRztFe"
-   },
-   "outputs": [],
-   "source": [
-    "USE_ONNX = False # change this to True if you want to test onnx model\n",
-    "if USE_ONNX:\n",
-    "    !pip install -q onnxruntime\n",
-    "  \n",
-    "model, utils = torch.hub.load(repo_or_dir='snakers4/silero-vad',\n",
-    "                              model='silero_lang_detector',\n",
-    "                              force_reload=True,\n",
-    "                              onnx=USE_ONNX)\n",
-    "\n",
-    "get_language, read_audio = utils"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {
-    "heading_collapsed": true,
-    "hidden": true,
-    "id": "iC696eMX2Fwz"
-   },
-   "source": [
-    "## Full audio"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "hidden": true,
-    "id": "c8UYnYBF2Fw0"
-   },
-   "outputs": [],
-   "source": [
-    "wav = read_audio('en_example.wav', sampling_rate=SAMPLING_RATE)\n",
-    "lang = get_language(wav, model)\n",
-    "print(lang)"
-   ]
   }
  ],
  "metadata": {

src/silero_vad/__init__.py

@@ -0,0 +1,12 @@
+from importlib.metadata import version
+try:
+    __version__ = version(__name__)
+except:
+    pass
+
+from silero_vad.model import load_silero_vad
+from silero_vad.utils_vad import (get_speech_timestamps,
+                                  save_audio,
+                                  read_audio,
+                                  VADIterator,
+                                  collect_chunks)

src/silero_vad/model.py

@@ -0,0 +1,25 @@
+from .utils_vad import init_jit_model, OnnxWrapper
+import torch
+torch.set_num_threads(1)
+
+def load_silero_vad(onnx=False):
+    model_name = 'silero_vad.onnx' if onnx else 'silero_vad.jit'
+    package_path = "silero_vad.data"
+    
+    try:
+        import importlib_resources as impresources
+        model_file_path = str(impresources.files(package_path).joinpath(model_name))
+    except:
+        from importlib import resources as impresources
+        try:
+            with impresources.path(package_path, model_name) as f:
+                model_file_path = f
+        except:
+            model_file_path = str(impresources.files(package_path).joinpath(model_name))
+
+    if onnx:
+        model = OnnxWrapper(model_file_path, force_onnx_cpu=True)
+    else:
+        model = init_jit_model(model_file_path)
+    
+    return model

src/silero_vad/utils_vad.py

@@ -1,7 +1,6 @@
 import torch
 import torchaudio
-from typing import List
-import torch.nn.functional as F
+from typing import Callable, List
 import warnings
 
 languages = ['ru', 'en', 'de', 'es']
@@ -13,12 +12,15 @@ class OnnxWrapper():
         import numpy as np
         global np
         import onnxruntime
+
+        opts = onnxruntime.SessionOptions()
+        opts.inter_op_num_threads = 1
+        opts.intra_op_num_threads = 1
+
         if force_onnx_cpu and 'CPUExecutionProvider' in onnxruntime.get_available_providers():
-            self.session = onnxruntime.InferenceSession(path, providers=['CPUExecutionProvider'])
+            self.session = onnxruntime.InferenceSession(path, providers=['CPUExecutionProvider'], sess_options=opts)
         else:
-            self.session = onnxruntime.InferenceSession(path)
-        self.session.intra_op_num_threads = 1
-        self.session.inter_op_num_threads = 1
+            self.session = onnxruntime.InferenceSession(path, sess_options=opts)
 
         self.reset_states()
         self.sample_rates = [8000, 16000]
@@ -31,27 +33,32 @@ class OnnxWrapper():
 
         if sr != 16000 and (sr % 16000 == 0):
             step = sr // 16000
-            x = x[::step]
+            x = x[:,::step]
             sr = 16000
 
         if sr not in self.sample_rates:
             raise ValueError(f"Supported sampling rates: {self.sample_rates} (or multiply of 16000)")
-
         if sr / x.shape[1] > 31.25:
             raise ValueError("Input audio chunk is too short")
 
         return x, sr
 
     def reset_states(self, batch_size=1):
-        self._h = np.zeros((2, batch_size, 64)).astype('float32')
-        self._c = np.zeros((2, batch_size, 64)).astype('float32')
+        self._state = torch.zeros((2, batch_size, 128)).float()
+        self._context = torch.zeros(0)
         self._last_sr = 0
         self._last_batch_size = 0
 
     def __call__(self, x, sr: int):
 
         x, sr = self._validate_input(x, sr)
+        num_samples = 512 if sr == 16000 else 256
+
+        if x.shape[-1] != num_samples:
+            raise ValueError(f"Provided number of samples is {x.shape[-1]} (Supported values: 256 for 8000 sample rate, 512 for 16000)")
+
         batch_size = x.shape[0]
+        context_size = 64 if sr == 16000 else 32
 
         if not self._last_batch_size:
             self.reset_states(batch_size)
@@ -60,28 +67,35 @@ class OnnxWrapper():
         if (self._last_batch_size) and (self._last_batch_size != batch_size):
             self.reset_states(batch_size)
 
+        if not len(self._context):
+            self._context = torch.zeros(batch_size, context_size)
+
+        x = torch.cat([self._context, x], dim=1)
         if sr in [8000, 16000]:
-            ort_inputs = {'input': x.numpy(), 'h': self._h, 'c': self._c, 'sr': np.array(sr)}
+            ort_inputs = {'input': x.numpy(), 'state': self._state.numpy(), 'sr': np.array(sr, dtype='int64')}
             ort_outs = self.session.run(None, ort_inputs)
-            out, self._h, self._c = ort_outs
+            out, state = ort_outs
+            self._state = torch.from_numpy(state)
         else:
             raise ValueError()
 
+        self._context = x[..., -context_size:]
         self._last_sr = sr
         self._last_batch_size = batch_size
 
-        out = torch.tensor(out)
+        out = torch.from_numpy(out)
         return out
 
-    def audio_forward(self, x, sr: int, num_samples: int = 512):
+    def audio_forward(self, x, sr: int):
         outs = []
         x, sr = self._validate_input(x, sr)
+        self.reset_states()
+        num_samples = 512 if sr == 16000 else 256
 
         if x.shape[1] % num_samples:
             pad_num = num_samples - (x.shape[1] % num_samples)
             x = torch.nn.functional.pad(x, (0, pad_num), 'constant', value=0.0)
 
-        self.reset_states(x.shape[0])
         for i in range(0, x.shape[1], num_samples):
             wavs_batch = x[:, i:i+num_samples]
             out_chunk = self.__call__(wavs_batch, sr)
@@ -118,17 +132,29 @@ class Validator():
 
 def read_audio(path: str,
                sampling_rate: int = 16000):
+    list_backends = torchaudio.list_audio_backends()
 
-    wav, sr = torchaudio.load(path)
+    assert len(list_backends) > 0, 'The list of available backends is empty, please install backend manually. \
+                                    \n Recommendations: \n \tSox (UNIX OS) \n \tSoundfile (Windows OS, UNIX OS) \n \tffmpeg (Windows OS, UNIX OS)'
 
-    if wav.size(0) > 1:
-        wav = wav.mean(dim=0, keepdim=True)
+    try:
+        effects = [
+            ['channels', '1'],
+            ['rate', str(sampling_rate)]
+        ]
 
-    if sr != sampling_rate:
-        transform = torchaudio.transforms.Resample(orig_freq=sr,
-                                                   new_freq=sampling_rate)
-        wav = transform(wav)
-        sr = sampling_rate
+        wav, sr = torchaudio.sox_effects.apply_effects_file(path, effects=effects)
+    except:
+        wav, sr = torchaudio.load(path)
+
+        if wav.size(0) > 1:
+            wav = wav.mean(dim=0, keepdim=True)
+
+        if sr != sampling_rate:
+            transform = torchaudio.transforms.Resample(orig_freq=sr,
+                                                       new_freq=sampling_rate)
+            wav = transform(wav)
+            sr = sampling_rate
 
     assert sr == sampling_rate
     return wav.squeeze(0)
@@ -137,12 +163,11 @@ def read_audio(path: str,
 def save_audio(path: str,
                tensor: torch.Tensor,
                sampling_rate: int = 16000):
-    torchaudio.save(path, tensor.unsqueeze(0), sampling_rate)
+    torchaudio.save(path, tensor.unsqueeze(0), sampling_rate, bits_per_sample=16)
 
 
 def init_jit_model(model_path: str,
                    device=torch.device('cpu')):
-    torch.set_grad_enabled(False)
     model = torch.jit.load(model_path, map_location=device)
     model.eval()
     return model
@@ -158,16 +183,20 @@ def make_visualization(probs, step):
                  colormap='tab20')
 
 
+@torch.no_grad()
 def get_speech_timestamps(audio: torch.Tensor,
                           model,
                           threshold: float = 0.5,
                           sampling_rate: int = 16000,
                           min_speech_duration_ms: int = 250,
+                          max_speech_duration_s: float = float('inf'),
                           min_silence_duration_ms: int = 100,
-                          window_size_samples: int = 512,
                           speech_pad_ms: int = 30,
                           return_seconds: bool = False,
-                          visualize_probs: bool = False):
+                          visualize_probs: bool = False,
+                          progress_tracking_callback: Callable[[float], None] = None,
+                          neg_threshold: float = None,
+                          window_size_samples: int = 512,):
 
     """
     This method is used for splitting long audios into speech chunks using silero VAD
@@ -177,26 +206,26 @@ def get_speech_timestamps(audio: torch.Tensor,
     audio: torch.Tensor, one dimensional
         One dimensional float torch.Tensor, other types are casted to torch if possible
 
-    model: preloaded .jit silero VAD model
+    model: preloaded .jit/.onnx silero VAD model
 
     threshold: float (default - 0.5)
         Speech threshold. Silero VAD outputs speech probabilities for each audio chunk, probabilities ABOVE this value are considered as SPEECH.
         It is better to tune this parameter for each dataset separately, but "lazy" 0.5 is pretty good for most datasets.
 
     sampling_rate: int (default - 16000)
-        Currently silero VAD models support 8000 and 16000 sample rates
+        Currently silero VAD models support 8000 and 16000 (or multiply of 16000) sample rates
 
     min_speech_duration_ms: int (default - 250 milliseconds)
         Final speech chunks shorter min_speech_duration_ms are thrown out
 
+    max_speech_duration_s: int (default -  inf)
+        Maximum duration of speech chunks in seconds
+        Chunks longer than max_speech_duration_s will be split at the timestamp of the last silence that lasts more than 100ms (if any), to prevent agressive cutting.
+        Otherwise, they will be split aggressively just before max_speech_duration_s.
+
     min_silence_duration_ms: int (default - 100 milliseconds)
         In the end of each speech chunk wait for min_silence_duration_ms before separating it
 
-    window_size_samples: int (default - 1536 samples)
-        Audio chunks of window_size_samples size are fed to the silero VAD model.
-        WARNING! Silero VAD models were trained using 512, 1024, 1536 samples for 16000 sample rate and 256, 512, 768 samples for 8000 sample rate.
-        Values other than these may affect model perfomance!!
-
     speech_pad_ms: int (default - 30 milliseconds)
         Final speech chunks are padded by speech_pad_ms each side
 
@@ -206,6 +235,15 @@ def get_speech_timestamps(audio: torch.Tensor,
     visualize_probs: bool (default - False)
         whether draw prob hist or not
 
+    progress_tracking_callback: Callable[[float], None] (default - None)
+        callback function taking progress in percents as an argument
+
+    neg_threshold: float (default = threshold - 0.15)
+        Negative threshold (noise or exit threshold). If model's current state is SPEECH, values BELOW this value are considered as NON-SPEECH.
+
+    window_size_samples: int (default - 512 samples)
+        !!! DEPRECATED, DOES NOTHING !!!
+
     Returns
     ----------
     speeches: list of dicts
@@ -232,15 +270,17 @@ def get_speech_timestamps(audio: torch.Tensor,
     else:
         step = 1
 
-    if sampling_rate == 8000 and window_size_samples > 768:
-        warnings.warn('window_size_samples is too big for 8000 sampling_rate! Better set window_size_samples to 256, 512 or 768 for 8000 sample rate!')
-    if window_size_samples not in [256, 512, 768, 1024, 1536]:
-        warnings.warn('Unusual window_size_samples! Supported window_size_samples:\n - [512, 1024, 1536] for 16000 sampling_rate\n - [256, 512, 768] for 8000 sampling_rate')
+    if sampling_rate not in [8000, 16000]:
+        raise ValueError("Currently silero VAD models support 8000 and 16000 (or multiply of 16000) sample rates")
+
+    window_size_samples = 512 if sampling_rate == 16000 else 256
 
     model.reset_states()
     min_speech_samples = sampling_rate * min_speech_duration_ms / 1000
-    min_silence_samples = sampling_rate * min_silence_duration_ms / 1000
     speech_pad_samples = sampling_rate * speech_pad_ms / 1000
+    max_speech_samples = sampling_rate * max_speech_duration_s - window_size_samples - 2 * speech_pad_samples
+    min_silence_samples = sampling_rate * min_silence_duration_ms / 1000
+    min_silence_samples_at_max_speech = sampling_rate * 98 / 1000
 
     audio_length_samples = len(audio)
 
@@ -251,33 +291,65 @@ def get_speech_timestamps(audio: torch.Tensor,
             chunk = torch.nn.functional.pad(chunk, (0, int(window_size_samples - len(chunk))))
         speech_prob = model(chunk, sampling_rate).item()
         speech_probs.append(speech_prob)
+        # caculate progress and seng it to callback function
+        progress = current_start_sample + window_size_samples
+        if progress > audio_length_samples:
+            progress = audio_length_samples
+        progress_percent = (progress / audio_length_samples) * 100
+        if progress_tracking_callback:
+            progress_tracking_callback(progress_percent)
 
     triggered = False
     speeches = []
     current_speech = {}
-    neg_threshold = threshold - 0.15
-    temp_end = 0
+
+    if neg_threshold is None:
+        neg_threshold = threshold - 0.15
+    temp_end = 0  # to save potential segment end (and tolerate some silence)
+    prev_end = next_start = 0  # to save potential segment limits in case of maximum segment size reached
 
     for i, speech_prob in enumerate(speech_probs):
         if (speech_prob >= threshold) and temp_end:
             temp_end = 0
+            if next_start < prev_end:
+                next_start = window_size_samples * i
 
         if (speech_prob >= threshold) and not triggered:
             triggered = True
             current_speech['start'] = window_size_samples * i
             continue
 
+        if triggered and (window_size_samples * i) - current_speech['start'] > max_speech_samples:
+            if prev_end:
+                current_speech['end'] = prev_end
+                speeches.append(current_speech)
+                current_speech = {}
+                if next_start < prev_end:  # previously reached silence (< neg_thres) and is still not speech (< thres)
+                    triggered = False
+                else:
+                    current_speech['start'] = next_start
+                prev_end = next_start = temp_end = 0
+            else:
+                current_speech['end'] = window_size_samples * i
+                speeches.append(current_speech)
+                current_speech = {}
+                prev_end = next_start = temp_end = 0
+                triggered = False
+                continue
+
         if (speech_prob < neg_threshold) and triggered:
             if not temp_end:
                 temp_end = window_size_samples * i
+            if ((window_size_samples * i) - temp_end) > min_silence_samples_at_max_speech:  # condition to avoid cutting in very short silence
+                prev_end = temp_end
             if (window_size_samples * i) - temp_end < min_silence_samples:
                 continue
             else:
                 current_speech['end'] = temp_end
                 if (current_speech['end'] - current_speech['start']) > min_speech_samples:
                     speeches.append(current_speech)
-                temp_end = 0
                 current_speech = {}
+                prev_end = next_start = temp_end = 0
                 triggered = False
                 continue
 
@@ -314,72 +386,6 @@ def get_speech_timestamps(audio: torch.Tensor,
     return speeches
 
 
-def get_number_ts(wav: torch.Tensor,
-                  model,
-                  model_stride=8,
-                  hop_length=160,
-                  sample_rate=16000):
-    wav = torch.unsqueeze(wav, dim=0)
-    perframe_logits = model(wav)[0]
-    perframe_preds = torch.argmax(torch.softmax(perframe_logits, dim=1), dim=1).squeeze()   # (1, num_frames_strided)
-    extended_preds = []
-    for i in perframe_preds:
-        extended_preds.extend([i.item()] * model_stride)
-    # len(extended_preds) is *num_frames_real*; for each frame of audio we know if it has a number in it.
-    triggered = False
-    timings = []
-    cur_timing = {}
-    for i, pred in enumerate(extended_preds):
-        if pred == 1:
-            if not triggered:
-                cur_timing['start'] = int((i * hop_length) / (sample_rate / 1000))
-                triggered = True
-        elif pred == 0:
-            if triggered:
-                cur_timing['end'] = int((i * hop_length) / (sample_rate / 1000))
-                timings.append(cur_timing)
-                cur_timing = {}
-                triggered = False
-    if cur_timing:
-        cur_timing['end'] = int(len(wav) / (sample_rate / 1000))
-        timings.append(cur_timing)
-    return timings
-
-
-def get_language(wav: torch.Tensor,
-                 model):
-    wav = torch.unsqueeze(wav, dim=0)
-    lang_logits = model(wav)[2]
-    lang_pred = torch.argmax(torch.softmax(lang_logits, dim=1), dim=1).item()   # from 0 to len(languages) - 1
-    assert lang_pred < len(languages)
-    return languages[lang_pred]
-
-
-def get_language_and_group(wav: torch.Tensor,
-                           model,
-                           lang_dict: dict,
-                           lang_group_dict: dict,
-                           top_n=1):
-    wav = torch.unsqueeze(wav, dim=0)
-    lang_logits, lang_group_logits = model(wav)
-
-    softm = torch.softmax(lang_logits, dim=1).squeeze()
-    softm_group = torch.softmax(lang_group_logits, dim=1).squeeze()
-
-    srtd = torch.argsort(softm, descending=True)
-    srtd_group = torch.argsort(softm_group, descending=True)
-
-    outs = []
-    outs_group = []
-    for i in range(top_n):
-        prob = round(softm[srtd[i]].item(), 2)
-        prob_group = round(softm_group[srtd_group[i]].item(), 2)
-        outs.append((lang_dict[str(srtd[i].item())], prob))
-        outs_group.append((lang_group_dict[str(srtd_group[i].item())], prob_group))
-
-    return outs, outs_group
-
-
 class VADIterator:
     def __init__(self,
                  model,
@@ -394,7 +400,7 @@ class VADIterator:
 
         Parameters
         ----------
-        model: preloaded .jit silero VAD model
+        model: preloaded .jit/.onnx silero VAD model
 
         threshold: float (default - 0.5)
             Speech threshold. Silero VAD outputs speech probabilities for each audio chunk, probabilities ABOVE this value are considered as SPEECH.
@@ -428,6 +434,7 @@ class VADIterator:
         self.temp_end = 0
         self.current_sample = 0
 
+    @torch.no_grad()
     def __call__(self, x, return_seconds=False):
         """
         x: torch.Tensor
@@ -453,7 +460,7 @@ class VADIterator:
 
         if (speech_prob >= self.threshold) and not self.triggered:
             self.triggered = True
-            speech_start = self.current_sample - self.speech_pad_samples
+            speech_start = max(0, self.current_sample - self.speech_pad_samples - window_size_samples)
             return {'start': int(speech_start) if not return_seconds else round(speech_start / self.sampling_rate, 1)}
 
         if (speech_prob < self.threshold - 0.15) and self.triggered:
@@ -462,7 +469,7 @@ class VADIterator:
             if self.current_sample - self.temp_end < self.min_silence_samples:
                 return None
             else:
-                speech_end = self.temp_end + self.speech_pad_samples
+                speech_end = self.temp_end + self.speech_pad_samples - window_size_samples
                 self.temp_end = 0
                 self.triggered = False
                 return {'end': int(speech_end) if not return_seconds else round(speech_end / self.sampling_rate, 1)}

tuning/README.md

@@ -0,0 +1,74 @@
+# Тюнинг Silero-VAD модели
+
+> Код тюнинга создан при поддержке Фонда содействия инновациям в рамках федерального проекта «Искусственный
+интеллект» национальной программы «Цифровая экономика Российской Федерации».
+
+Тюнинг используется для улучшения качества детекции речи Silero-VAD модели на кастомных данных.
+
+## Зависимости
+Следующие зависимости используются при тюнинге VAD модели:
+- `torchaudio>=0.12.0`
+- `omegaconf>=2.3.0`
+- `sklearn>=1.2.0`
+- `torch>=1.12.0`
+- `pandas>=2.2.2`
+- `tqdm`
+
+## Подготовка данных
+
+Датафреймы для тюнинга должны быть подготовлены и сохранены в формате `.feather`. Следующие колонки в `.feather` файлах тренировки и валидации являются обязательными:
+- **audio_path** - абсолютный путь до аудиофайла в дисковой системе. Аудиофайлы должны представлять собой `PCM` данные, предпочтительно в форматах `.wav` или `.opus` (иные популярные форматы аудио тоже поддерживаются). Для ускорения темпа дообучения рекомендуется предварительно выполнить ресемплинг аудиофайлов (изменить частоту дискретизации) до 16000 Гц;
+- **speech_ts** - разметка для соответствующего аудиофайла. Список, состоящий из словарей формата `{'start': START_SEC, 'end': 'END_SEC'}`, где `START_SEC` и `END_SEC` - время начало и конца речевого отрезка в секундах соответственно. Для качественного дообучения рекомендуется использовать разметку с точностью до 30 миллисекунд.
+
+Чем больше данных используется на этапе дообучения, тем эффективнее показывает себя адаптированная модель на целевом домене. Длина аудио не ограничена, т.к. каждое аудио будет обрезано до `max_train_length_sec` секунд перед подачей в нейросеть. Длинные аудио лучше предварительно порезать на кусочки длины `max_train_length_sec`.
+
+Пример `.feather` датафрейма можно посмотреть в файле `example_dataframe.feather`
+
+## Файл конфигурации `config.yml`
+
+Файл конфигурации `config.yml` содержит пути до обучающей и валидационной выборки, а также параметры дообучения:
+- `train_dataset_path` - абсолютный путь до тренировочного датафрейма в формате `.feather`. Должен содержать колонки `audio_path` и `speech_ts`, описанные в пункте "Подготовка данных". Пример устройства датафрейма можно посмотреть в `example_dataframe.feather`;
+- `val_dataset_path` - абсолютный путь до валидационного датафрейма в формате `.feather`. Должен содержать колонки `audio_path` и `speech_ts`, описанные в пункте "Подготовка данных". Пример устройства датафрейма можно посмотреть в `example_dataframe.feather`;
+- `jit_model_path` - абсолютный путь до Silero-VAD модели в формате `.jit`. Если оставить это поле пустым, то модель будет загружена из репозитория в зависимости от значения поля `use_torchhub`
+- `use_torchhub` - Если `True`, то модель для дообучения будет загружена с помощью torch.hub. Если `False`, то модель для дообучения будет загружена с помощью библиотеки silero-vad (необходимо заранее установить командой `pip install silero-vad`);
+- `tune_8k` - данный параметр отвечает, какую голову Silero-VAD дообучать. Если `True`, дообучаться будет голова с 8000 Гц частотой дискретизации, иначе с 16000 Гц;
+- `model_save_path` - путь сохранения добученной модели;
+- `noise_loss` - коэффициент лосса, применяемый для неречевых окон аудио;
+- `max_train_length_sec` - максимальная длина аудио в секундах на этапе дообучения. Более длительные аудио будут обрезаны до этого показателя;
+- `aug_prob` - вероятность применения аугментаций к аудиофайлу на этапе дообучения;
+- `learning_rate` - темп дообучения;
+- `batch_size` - размер батча при дообучении и валидации;
+- `num_workers` - количество потоков, используемых для загрузки данных;
+- `num_epochs` - количество эпох дообучения. За одну эпоху прогоняются все тренировочные данные;
+- `device` - `cpu` или `cuda`.
+
+## Дообучение
+
+Дообучение запускается командой 
+
+`python tune.py`
+
+Длится в течение `num_epochs`, лучший чекпоинт по показателю ROC-AUC на валидационной выборке будет сохранен в `model_save_path` в формате jit.
+
+## Поиск пороговых значений
+
+Порог на вход и порог на выход можно подобрать, используя команду 
+
+`python search_thresholds`
+
+Данный скрипт использует файл конфигурации, описанный выше. Указанная в конфигурации модель будет использована для поиска оптимальных порогов на валидационном датасете.
+
+## Цитирование
+
+```
+@misc{Silero VAD,
+  author = {Silero Team},
+  title = {Silero VAD: pre-trained enterprise-grade Voice Activity Detector (VAD), Number Detector and Language Classifier},
+  year = {2024},
+  publisher = {GitHub},
+  journal = {GitHub repository},
+  howpublished = {\url{https://github.com/snakers4/silero-vad}},
+  commit = {insert_some_commit_here},
+  email = {hello@silero.ai}
+}
+```

tuning/config.yml

@@ -0,0 +1,17 @@
+jit_model_path: ''  # путь до Silero-VAD модели в формате jit, эта модель будет использована для дообучения. Если оставить поле пустым, то модель будет загружена автоматически
+use_torchhub: True  # jit модель будет загружена через torchhub, если True, или через pip, если False
+
+tune_8k: False  # дообучает 16к голову, если False, и 8к голову, если True
+train_dataset_path: 'train_dataset_path.feather'  # путь до датасета в формате feather для дообучения, подробности в README
+val_dataset_path: 'val_dataset_path.feather'  # путь до датасета в формате feather для валидации, подробности в README
+model_save_path: 'model_save_path.jit'  # путь сохранения дообученной модели
+
+noise_loss: 0.5  # коэффициент, применяемый к лоссу на неречевых окнах
+max_train_length_sec: 8  # во время тюнинга аудио длиннее будут обрезаны до данного значения
+aug_prob: 0.4  # вероятность применения аугментаций к аудио в процессе дообучения
+
+learning_rate: 5e-4  # темп дообучения модели
+batch_size: 128  # размер батча при дообучении и валидации
+num_workers: 4  # количество потоков, используемых для даталоадеров
+num_epochs: 20  # количество эпох дообучения, 1 эпоха = полный прогон тренировочных данных
+device: 'cuda'  # cpu или cuda, на чем будет производится дообучение

tuning/search_thresholds.py

@@ -0,0 +1,36 @@
+from utils import init_jit_model, predict, calculate_best_thresholds, SileroVadDataset, SileroVadPadder
+from omegaconf import OmegaConf
+import torch
+torch.set_num_threads(1)
+
+if __name__ == '__main__':
+    config = OmegaConf.load('config.yml')
+
+    loader = torch.utils.data.DataLoader(SileroVadDataset(config, mode='val'),
+                                         batch_size=config.batch_size,
+                                         collate_fn=SileroVadPadder,
+                                         num_workers=config.num_workers)
+
+    if config.jit_model_path:
+        print(f'Loading model from the local folder: {config.jit_model_path}')
+        model = init_jit_model(config.jit_model_path, device=config.device)
+    else:
+        if config.use_torchhub:
+            print('Loading model using torch.hub')
+            model, _ = torch.hub.load(repo_or_dir='snakers4/silero-vad',
+                                      model='silero_vad',
+                                      onnx=False,
+                                      force_reload=True)
+        else:
+            print('Loading model using silero-vad library')
+            from silero_vad import load_silero_vad
+            model = load_silero_vad(onnx=False)
+
+    print('Model loaded')
+    model.to(config.device)
+
+    print('Making predicts...')
+    all_predicts, all_gts = predict(model, loader, config.device, sr=8000 if config.tune_8k else 16000)
+    print('Calculating thresholds...')
+    best_ths_enter, best_ths_exit, best_acc = calculate_best_thresholds(all_predicts, all_gts)
+    print(f'Best threshold: {best_ths_enter}\nBest exit threshold: {best_ths_exit}\nBest accuracy: {best_acc}')

tuning/tune.py

@@ -0,0 +1,65 @@
+from utils import SileroVadDataset, SileroVadPadder, VADDecoderRNNJIT, train, validate, init_jit_model
+from omegaconf import OmegaConf
+import torch.nn as nn
+import torch
+
+
+if __name__ == '__main__':
+    config = OmegaConf.load('config.yml')
+
+    train_dataset = SileroVadDataset(config, mode='train')
+    train_loader = torch.utils.data.DataLoader(train_dataset,
+                                               batch_size=config.batch_size,
+                                               collate_fn=SileroVadPadder,
+                                               num_workers=config.num_workers)
+
+    val_dataset = SileroVadDataset(config, mode='val')
+    val_loader = torch.utils.data.DataLoader(val_dataset,
+                                             batch_size=config.batch_size,
+                                             collate_fn=SileroVadPadder,
+                                             num_workers=config.num_workers)
+
+    if config.jit_model_path:
+        print(f'Loading model from the local folder: {config.jit_model_path}')
+        model = init_jit_model(config.jit_model_path, device=config.device)
+    else:
+        if config.use_torchhub:
+            print('Loading model using torch.hub')
+            model, _ = torch.hub.load(repo_or_dir='snakers4/silero-vad',
+                                      model='silero_vad',
+                                      onnx=False,
+                                      force_reload=True)
+        else:
+            print('Loading model using silero-vad library')
+            from silero_vad import load_silero_vad
+            model = load_silero_vad(onnx=False)
+
+    print('Model loaded')
+    model.to(config.device)
+    decoder = VADDecoderRNNJIT().to(config.device)
+    decoder.load_state_dict(model._model_8k.decoder.state_dict() if config.tune_8k else model._model.decoder.state_dict())
+    decoder.train()
+    params = decoder.parameters()
+    optimizer = torch.optim.Adam(filter(lambda p: p.requires_grad, params),
+                                 lr=config.learning_rate)
+    criterion = nn.BCELoss(reduction='none')
+
+    best_val_roc = 0
+    for i in range(config.num_epochs):
+        print(f'Starting epoch {i + 1}')
+        train_loss = train(config, train_loader, model, decoder, criterion, optimizer, config.device)
+        val_loss, val_roc = validate(config, val_loader, model, decoder, criterion, config.device)
+        print(f'Metrics after epoch {i + 1}:\n'
+              f'\tTrain loss: {round(train_loss, 3)}\n',
+              f'\tValidation loss: {round(val_loss, 3)}\n'
+              f'\tValidation ROC-AUC: {round(val_roc, 3)}')
+
+        if val_roc > best_val_roc:
+            print('New best ROC-AUC, saving model')
+            best_val_roc = val_roc
+            if config.tune_8k:
+                model._model_8k.decoder.load_state_dict(decoder.state_dict())
+            else:
+                model._model.decoder.load_state_dict(decoder.state_dict())
+            torch.jit.save(model, config.model_save_path)
+    print('Done')

tuning/utils.py

@@ -0,0 +1,357 @@
+from sklearn.metrics import roc_auc_score, accuracy_score
+from torch.utils.data import Dataset
+import torch.nn as nn
+from tqdm import tqdm
+import pandas as pd
+import numpy as np
+import torchaudio
+import warnings
+import random
+import torch
+import gc
+warnings.filterwarnings('ignore')
+
+
+def read_audio(path: str,
+               sampling_rate: int = 16000,
+               normalize=False):
+
+    wav, sr = torchaudio.load(path)
+
+    if wav.size(0) > 1:
+        wav = wav.mean(dim=0, keepdim=True)
+
+    if sampling_rate:
+        if sr != sampling_rate:
+            transform = torchaudio.transforms.Resample(orig_freq=sr,
+                                                       new_freq=sampling_rate)
+            wav = transform(wav)
+            sr = sampling_rate
+
+    if normalize and wav.abs().max() != 0:
+        wav = wav / wav.abs().max()
+
+    return wav.squeeze(0)
+
+
+def build_audiomentations_augs(p):
+    from audiomentations import SomeOf, AirAbsorption, BandPassFilter, BandStopFilter, ClippingDistortion, HighPassFilter, HighShelfFilter, \
+                                LowPassFilter, LowShelfFilter, Mp3Compression, PeakingFilter, PitchShift, RoomSimulator, SevenBandParametricEQ, \
+                                Aliasing, AddGaussianNoise
+    transforms = [Aliasing(p=1),
+                  AddGaussianNoise(p=1),
+                  AirAbsorption(p=1),
+                  BandPassFilter(p=1),
+                  BandStopFilter(p=1),
+                  ClippingDistortion(p=1),
+                  HighPassFilter(p=1),
+                  HighShelfFilter(p=1),
+                  LowPassFilter(p=1),
+                  LowShelfFilter(p=1),
+                  Mp3Compression(p=1),
+                  PeakingFilter(p=1),
+                  PitchShift(p=1),
+                  RoomSimulator(p=1, leave_length_unchanged=True),
+                  SevenBandParametricEQ(p=1)]
+    tr = SomeOf((1, 3), transforms=transforms, p=p)
+    return tr
+
+
+class SileroVadDataset(Dataset):
+    def __init__(self,
+                 config,
+                 mode='train'):
+
+        self.num_samples = 512  # constant, do not change
+        self.sr = 16000  # constant, do not change
+
+        self.resample_to_8k = config.tune_8k
+        self.noise_loss = config.noise_loss
+        self.max_train_length_sec = config.max_train_length_sec
+        self.max_train_length_samples = config.max_train_length_sec * self.sr
+
+        assert self.max_train_length_samples % self.num_samples == 0
+        assert mode in ['train', 'val']
+
+        dataset_path = config.train_dataset_path if mode == 'train' else config.val_dataset_path
+        self.dataframe = pd.read_feather(dataset_path).reset_index(drop=True)
+        self.index_dict = self.dataframe.to_dict('index')
+        self.mode = mode
+        print(f'DATASET SIZE : {len(self.dataframe)}')
+
+        if mode == 'train':
+            self.augs = build_audiomentations_augs(p=config.aug_prob)
+        else:
+            self.augs = None
+
+    def __getitem__(self, idx):
+        idx = None if self.mode == 'train' else idx
+        wav, gt, mask = self.load_speech_sample(idx)
+
+        if self.mode == 'train':
+            wav = self.add_augs(wav)
+            if len(wav) > self.max_train_length_samples:
+                wav = wav[:self.max_train_length_samples]
+                gt = gt[:int(self.max_train_length_samples / self.num_samples)]
+                mask = mask[:int(self.max_train_length_samples / self.num_samples)]
+
+        wav = torch.FloatTensor(wav)
+        if self.resample_to_8k:
+            transform = torchaudio.transforms.Resample(orig_freq=self.sr,
+                                                       new_freq=8000)
+            wav = transform(wav)
+        return wav, torch.FloatTensor(gt), torch.from_numpy(mask)
+
+    def __len__(self):
+        return len(self.index_dict)
+
+    def load_speech_sample(self, idx=None):
+        if idx is None:
+            idx = random.randint(0, len(self.index_dict) - 1)
+        wav = read_audio(self.index_dict[idx]['audio_path'], self.sr).numpy()
+
+        if len(wav) % self.num_samples != 0:
+            pad_num = self.num_samples - (len(wav) % (self.num_samples))
+            wav = np.pad(wav, (0, pad_num), 'constant', constant_values=0)
+
+        gt, mask = self.get_ground_truth_annotated(self.index_dict[idx]['speech_ts'], len(wav))
+
+        assert len(gt) == len(wav) / self.num_samples
+
+        mask[gt == 0]
+
+        return wav, gt, mask
+
+    def get_ground_truth_annotated(self, annotation, audio_length_samples):
+        gt = np.zeros(audio_length_samples)
+
+        for i in annotation:
+            gt[int(i['start'] * self.sr): int(i['end'] * self.sr)] = 1
+
+        squeezed_predicts = np.average(gt.reshape(-1, self.num_samples), axis=1)
+        squeezed_predicts = (squeezed_predicts > 0.5).astype(int)
+        mask = np.ones(len(squeezed_predicts))
+        mask[squeezed_predicts == 0] = self.noise_loss
+        return squeezed_predicts, mask
+
+    def add_augs(self, wav):
+        while True:
+            try:
+                wav_aug = self.augs(wav, self.sr)
+                if np.isnan(wav_aug.max()) or np.isnan(wav_aug.min()):
+                    return wav
+                return wav_aug
+            except Exception as e:
+                continue
+
+
+def SileroVadPadder(batch):
+    wavs = [batch[i][0] for i in range(len(batch))]
+    labels = [batch[i][1] for i in range(len(batch))]
+    masks = [batch[i][2] for i in range(len(batch))]
+
+    wavs = torch.nn.utils.rnn.pad_sequence(
+        wavs, batch_first=True, padding_value=0)
+
+    labels = torch.nn.utils.rnn.pad_sequence(
+        labels, batch_first=True, padding_value=0)
+
+    masks = torch.nn.utils.rnn.pad_sequence(
+        masks, batch_first=True, padding_value=0)
+
+    return wavs, labels, masks
+
+
+class VADDecoderRNNJIT(nn.Module):
+
+    def __init__(self):
+        super(VADDecoderRNNJIT, self).__init__()
+
+        self.rnn = nn.LSTMCell(128, 128)
+        self.decoder = nn.Sequential(nn.Dropout(0.1),
+                                     nn.ReLU(),
+                                     nn.Conv1d(128, 1, kernel_size=1),
+                                     nn.Sigmoid())
+
+    def forward(self, x, state=torch.zeros(0)):
+        x = x.squeeze(-1)
+        if len(state):
+            h, c = self.rnn(x, (state[0], state[1]))
+        else:
+            h, c = self.rnn(x)
+
+        x = h.unsqueeze(-1).float()
+        state = torch.stack([h, c])
+        x = self.decoder(x)
+        return x, state
+
+
+class AverageMeter(object):
+    """Computes and stores the average and current value"""
+
+    def __init__(self):
+        self.reset()
+
+    def reset(self):
+        self.val = 0
+        self.avg = 0
+        self.sum = 0
+        self.count = 0
+
+    def update(self, val, n=1):
+        self.val = val
+        self.sum += val * n
+        self.count += n
+        self.avg = self.sum / self.count
+
+
+def train(config,
+          loader,
+          jit_model,
+          decoder,
+          criterion,
+          optimizer,
+          device):
+
+    losses = AverageMeter()
+    decoder.train()
+
+    context_size = 32 if config.tune_8k else 64
+    num_samples = 256 if config.tune_8k else 512
+    stft_layer = jit_model._model_8k.stft if config.tune_8k else jit_model._model.stft
+    encoder_layer = jit_model._model_8k.encoder if config.tune_8k else jit_model._model.encoder
+
+    with torch.enable_grad():
+        for _, (x, targets, masks) in tqdm(enumerate(loader), total=len(loader)):
+            targets = targets.to(device)
+            x = x.to(device)
+            masks = masks.to(device)
+            x = torch.nn.functional.pad(x, (context_size, 0))
+
+            outs = []
+            state = torch.zeros(0)
+            for i in range(context_size, x.shape[1], num_samples):
+                input_ = x[:, i-context_size:i+num_samples]
+                out = stft_layer(input_)
+                out = encoder_layer(out)
+                out, state = decoder(out, state)
+                outs.append(out)
+            stacked = torch.cat(outs, dim=2).squeeze(1)
+
+            loss = criterion(stacked, targets)
+            loss = (loss * masks).mean()
+            loss.backward()
+            optimizer.step()
+            losses.update(loss.item(), masks.numel())
+
+    torch.cuda.empty_cache()
+    gc.collect()
+
+    return losses.avg
+
+
+def validate(config,
+             loader,
+             jit_model,
+             decoder,
+             criterion,
+             device):
+
+    losses = AverageMeter()
+    decoder.eval()
+
+    predicts = []
+    gts = []
+
+    context_size = 32 if config.tune_8k else 64
+    num_samples = 256 if config.tune_8k else 512
+    stft_layer = jit_model._model_8k.stft if config.tune_8k else jit_model._model.stft
+    encoder_layer = jit_model._model_8k.encoder if config.tune_8k else jit_model._model.encoder
+
+    with torch.no_grad():
+        for _, (x, targets, masks) in tqdm(enumerate(loader), total=len(loader)):
+            targets = targets.to(device)
+            x = x.to(device)
+            masks = masks.to(device)
+            x = torch.nn.functional.pad(x, (context_size, 0))
+
+            outs = []
+            state = torch.zeros(0)
+            for i in range(context_size, x.shape[1], num_samples):
+                input_ = x[:, i-context_size:i+num_samples]
+                out = stft_layer(input_)
+                out = encoder_layer(out)
+                out, state = decoder(out, state)
+                outs.append(out)
+            stacked = torch.cat(outs, dim=2).squeeze(1)
+
+            predicts.extend(stacked[masks != 0].tolist())
+            gts.extend(targets[masks != 0].tolist())
+
+            loss = criterion(stacked, targets)
+            loss = (loss * masks).mean()
+            losses.update(loss.item(), masks.numel())
+    score = roc_auc_score(gts, predicts)
+
+    torch.cuda.empty_cache()
+    gc.collect()
+
+    return losses.avg, round(score, 3)
+
+
+def init_jit_model(model_path: str,
+                   device=torch.device('cpu')):
+    torch.set_grad_enabled(False)
+    model = torch.jit.load(model_path, map_location=device)
+    model.eval()
+    return model
+
+
+def predict(model, loader, device, sr):
+    with torch.no_grad():
+        all_predicts = []
+        all_gts = []
+        for _, (x, targets, masks) in tqdm(enumerate(loader), total=len(loader)):
+            x = x.to(device)
+            out = model.audio_forward(x, sr=sr)
+
+            for i, out_chunk in enumerate(out):
+                predict = out_chunk[masks[i] != 0].cpu().tolist()
+                gt = targets[i, masks[i] != 0].cpu().tolist()
+
+                all_predicts.append(predict)
+                all_gts.append(gt)
+    return all_predicts, all_gts
+
+
+def calculate_best_thresholds(all_predicts, all_gts):
+    best_acc = 0
+    for ths_enter in tqdm(np.linspace(0, 1, 20)):
+        for ths_exit in np.linspace(0, 1, 20):
+            if ths_exit >= ths_enter:
+                continue
+
+            accs = []
+            for j, predict in enumerate(all_predicts):
+                predict_bool = []
+                is_speech = False
+                for i in predict:
+                    if i >= ths_enter:
+                        is_speech = True
+                        predict_bool.append(1)
+                    elif i <= ths_exit:
+                        is_speech = False
+                        predict_bool.append(0)
+                    else:
+                        val = 1 if is_speech else 0
+                        predict_bool.append(val)
+
+                score = round(accuracy_score(all_gts[j], predict_bool), 4)
+                accs.append(score)
+
+            mean_acc = round(np.mean(accs), 3)
+            if mean_acc > best_acc:
+                best_acc = mean_acc
+                best_ths_enter = round(ths_enter, 2)
+                best_ths_exit = round(ths_exit, 2)
+    return best_ths_enter, best_ths_exit, best_acc