v4.0stable force_onnx_cpu fx

Adamnsandle

README.md

@@ -15,7 +15,7 @@ This repository also includes Number Detector and Language classifier [models](h
 <br/>
 
 <p align="center">
-  <img src="https://user-images.githubusercontent.com/36505480/145007002-8473f909-5985-4942-bbcf-9ac86d156c2f.png" />
+  <img src="https://user-images.githubusercontent.com/36505480/198026365-8da383e0-5398-4a12-b7f8-22c2c0059512.png" />
 </p>
 
 <details>
@@ -29,17 +29,17 @@ https://user-images.githubusercontent.com/36505480/144874384-95f80f6d-a4f1-42cc-
 <h2 align="center">Key Features</h2>
 <br/>
 
-- **High accuracy**
+- **Stellar accuracy**
 
   Silero VAD has [excellent results](https://github.com/snakers4/silero-vad/wiki/Quality-Metrics#vs-other-available-solutions) on speech detection tasks.
   
 - **Fast**
 
-  One audio chunk (30+ ms) [takes](https://github.com/snakers4/silero-vad/wiki/Performance-Metrics#silero-vad-performance-metrics) around **1ms** to be processed on a single CPU thread. Using batching or GPU can also improve performance considerably.
+  One audio chunk (30+ ms) [takes](https://github.com/snakers4/silero-vad/wiki/Performance-Metrics#silero-vad-performance-metrics) less than **1ms** to be processed on a single CPU thread. Using batching or GPU can also improve performance considerably. Under certain conditions ONNX may even run up to 4-5x faster. 
 
 - **Lightweight**
 
-  JIT model is less than one megabyte in size.
+  JIT model is around one megabyte in size.
 
 - **General**
 
@@ -51,7 +51,15 @@ https://user-images.githubusercontent.com/36505480/144874384-95f80f6d-a4f1-42cc-
 
 - **Flexible chunk size**
 
-  Model was trained on audio chunks of different lengths. **30 ms**, **60 ms** and **100 ms** long chunks are supported directly, others may work as well.
+  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.
+
+- **No Strings Attached**
+
+   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>
@@ -70,8 +78,10 @@ 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)
+- [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)
 
 <br/>
 <h2 align="center">Get In Touch</h2>
@@ -94,4 +104,10 @@ Please see our [wiki](https://github.com/snakers4/silero-models/wiki) and [tiers
   commit = {insert_some_commit_here},
   email = {hello@silero.ai}
 }
-```
+```
+
+<br/>
+<h2 align="center">VAD-based Community Apps</h2>
+<br/>
+
+- Voice activity detection for the [browser](https://github.com/ricky0123/vad) using ONNX Runtime Web 

examples/colab_record_example.ipynb

@@ -0,0 +1,241 @@
+{
+ "cells": [
+  {
+   "cell_type": "markdown",
+   "metadata": {
+    "id": "bccAucKjnPHm"
+   },
+   "source": [
+    "### Dependencies and inputs"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "id": "cSih95WFmwgi"
+   },
+   "outputs": [],
+   "source": [
+    "!pip -q install pydub\n",
+    "from google.colab import output\n",
+    "from base64 import b64decode, b64encode\n",
+    "from io import BytesIO\n",
+    "import numpy as np\n",
+    "from pydub import AudioSegment\n",
+    "from IPython.display import HTML, display\n",
+    "import torch\n",
+    "import matplotlib.pyplot as plt\n",
+    "import moviepy.editor as mpe\n",
+    "from matplotlib.animation import FuncAnimation, FFMpegWriter\n",
+    "import matplotlib\n",
+    "matplotlib.use('Agg')\n",
+    "\n",
+    "torch.set_num_threads(1)\n",
+    "\n",
+    "model, _ = torch.hub.load(repo_or_dir='snakers4/silero-vad',\n",
+    "                              model='silero_vad',\n",
+    "                              force_reload=True)\n",
+    "\n",
+    "def int2float(sound):\n",
+    "    abs_max = np.abs(sound).max()\n",
+    "    sound = sound.astype('float32')\n",
+    "    if abs_max > 0:\n",
+    "        sound *= 1/abs_max\n",
+    "    sound = sound.squeeze()\n",
+    "    return sound\n",
+    "\n",
+    "AUDIO_HTML = \"\"\"\n",
+    "<script>\n",
+    "var my_div = document.createElement(\"DIV\");\n",
+    "var my_p = document.createElement(\"P\");\n",
+    "var my_btn = document.createElement(\"BUTTON\");\n",
+    "var t = document.createTextNode(\"Press to start recording\");\n",
+    "\n",
+    "my_btn.appendChild(t);\n",
+    "//my_p.appendChild(my_btn);\n",
+    "my_div.appendChild(my_btn);\n",
+    "document.body.appendChild(my_div);\n",
+    "\n",
+    "var base64data = 0;\n",
+    "var reader;\n",
+    "var recorder, gumStream;\n",
+    "var recordButton = my_btn;\n",
+    "\n",
+    "var handleSuccess = function(stream) {\n",
+    "  gumStream = stream;\n",
+    "  var options = {\n",
+    "    //bitsPerSecond: 8000, //chrome seems to ignore, always 48k\n",
+    "    mimeType : 'audio/webm;codecs=opus'\n",
+    "    //mimeType : 'audio/webm;codecs=pcm'\n",
+    "  };            \n",
+    "  //recorder = new MediaRecorder(stream, options);\n",
+    "  recorder = new MediaRecorder(stream);\n",
+    "  recorder.ondataavailable = function(e) {            \n",
+    "    var url = URL.createObjectURL(e.data);\n",
+    "    // var preview = document.createElement('audio');\n",
+    "    // preview.controls = true;\n",
+    "    // preview.src = url;\n",
+    "    // document.body.appendChild(preview);\n",
+    "\n",
+    "    reader = new FileReader();\n",
+    "    reader.readAsDataURL(e.data); \n",
+    "    reader.onloadend = function() {\n",
+    "      base64data = reader.result;\n",
+    "      //console.log(\"Inside FileReader:\" + base64data);\n",
+    "    }\n",
+    "  };\n",
+    "  recorder.start();\n",
+    "  };\n",
+    "\n",
+    "recordButton.innerText = \"Recording... press to stop\";\n",
+    "\n",
+    "navigator.mediaDevices.getUserMedia({audio: true}).then(handleSuccess);\n",
+    "\n",
+    "\n",
+    "function toggleRecording() {\n",
+    "  if (recorder && recorder.state == \"recording\") {\n",
+    "      recorder.stop();\n",
+    "      gumStream.getAudioTracks()[0].stop();\n",
+    "      recordButton.innerText = \"Saving recording...\"\n",
+    "  }\n",
+    "}\n",
+    "\n",
+    "// https://stackoverflow.com/a/951057\n",
+    "function sleep(ms) {\n",
+    "  return new Promise(resolve => setTimeout(resolve, ms));\n",
+    "}\n",
+    "\n",
+    "var data = new Promise(resolve=>{\n",
+    "//recordButton.addEventListener(\"click\", toggleRecording);\n",
+    "recordButton.onclick = ()=>{\n",
+    "toggleRecording()\n",
+    "\n",
+    "sleep(2000).then(() => {\n",
+    "  // wait 2000ms for the data to be available...\n",
+    "  // ideally this should use something like await...\n",
+    "  //console.log(\"Inside data:\" + base64data)\n",
+    "  resolve(base64data.toString())\n",
+    "\n",
+    "});\n",
+    "\n",
+    "}\n",
+    "});\n",
+    "      \n",
+    "</script>\n",
+    "\"\"\"\n",
+    "\n",
+    "def record(sec=10):\n",
+    "    display(HTML(AUDIO_HTML))\n",
+    "    s = output.eval_js(\"data\")\n",
+    "    b = b64decode(s.split(',')[1])\n",
+    "    audio = AudioSegment.from_file(BytesIO(b))\n",
+    "    audio.export('test.mp3', format='mp3')\n",
+    "    audio = audio.set_channels(1)\n",
+    "    audio = audio.set_frame_rate(16000)\n",
+    "    audio_float = int2float(np.array(audio.get_array_of_samples()))\n",
+    "    audio_tens = torch.tensor(audio_float )\n",
+    "    return audio_tens\n",
+    "\n",
+    "def make_animation(probs, audio_duration, interval=40):\n",
+    "    fig = plt.figure(figsize=(16, 9))\n",
+    "    ax = plt.axes(xlim=(0, audio_duration), ylim=(0, 1.02))\n",
+    "    line, = ax.plot([], [], lw=2)\n",
+    "    x = [i / 16000 * 512 for i in range(len(probs))]\n",
+    "    plt.xlabel('Time, seconds', fontsize=16)\n",
+    "    plt.ylabel('Speech Probability', fontsize=16)\n",
+    "\n",
+    "    def init():\n",
+    "        plt.fill_between(x, probs, color='#064273')\n",
+    "        line.set_data([], [])\n",
+    "        line.set_color('#990000')\n",
+    "        return line,\n",
+    "\n",
+    "    def animate(i):\n",
+    "        x = i * interval / 1000 - 0.04\n",
+    "        y = np.linspace(0, 1.02, 2)\n",
+    "        \n",
+    "        line.set_data(x, y)\n",
+    "        line.set_color('#990000')\n",
+    "        return line,\n",
+    "\n",
+    "    anim = FuncAnimation(fig, animate, init_func=init, interval=interval, save_count=audio_duration / (interval / 1000))\n",
+    "\n",
+    "    f = r\"animation.mp4\" \n",
+    "    writervideo = FFMpegWriter(fps=1000/interval) \n",
+    "    anim.save(f, writer=writervideo)\n",
+    "    plt.close('all')\n",
+    "\n",
+    "def combine_audio(vidname, audname, outname, fps=25): \n",
+    "    my_clip = mpe.VideoFileClip(vidname, verbose=False)\n",
+    "    audio_background = mpe.AudioFileClip(audname)\n",
+    "    final_clip = my_clip.set_audio(audio_background)\n",
+    "    final_clip.write_videofile(outname,fps=fps,verbose=False)\n",
+    "\n",
+    "def record_make_animation():\n",
+    "  tensor = record()\n",
+    "\n",
+    "  print('Calculating probabilities...')\n",
+    "  speech_probs = []\n",
+    "  window_size_samples = 512\n",
+    "  for i in range(0, len(tensor), window_size_samples):\n",
+    "      if len(tensor[i: i+ window_size_samples]) < window_size_samples:\n",
+    "        break\n",
+    "      speech_prob = model(tensor[i: i+ window_size_samples], 16000).item()\n",
+    "      speech_probs.append(speech_prob)\n",
+    "  model.reset_states()\n",
+    "  print('Making animation...')\n",
+    "  make_animation(speech_probs, len(tensor) / 16000)\n",
+    "\n",
+    "  print('Merging your voice with animation...')\n",
+    "  combine_audio('animation.mp4', 'test.mp3', 'merged.mp4')\n",
+    "  print('Done!')\n",
+    "  mp4 = open('merged.mp4','rb').read()\n",
+    "  data_url = \"data:video/mp4;base64,\" + b64encode(mp4).decode()\n",
+    "  display(HTML(\"\"\"\n",
+    "  <video width=800 controls>\n",
+    "        <source src=\"%s\" type=\"video/mp4\">\n",
+    "  </video>\n",
+    "  \"\"\" % data_url))"
+   ]
+  },
+  {
+   "cell_type": "markdown",
+   "metadata": {
+    "id": "IFVs3GvTnpB1"
+   },
+   "source": [
+    "## Record example"
+   ]
+  },
+  {
+   "cell_type": "code",
+   "execution_count": null,
+   "metadata": {
+    "id": "5EBjrTwiqAaQ"
+   },
+   "outputs": [],
+   "source": [
+    "record_make_animation()"
+   ]
+  }
+ ],
+ "metadata": {
+  "colab": {
+   "collapsed_sections": [
+    "bccAucKjnPHm"
+   ],
+   "name": "Untitled2.ipynb",
+   "provenance": []
+  },
+  "kernelspec": {
+   "display_name": "Python 3",
+   "name": "python3"
+  },
+  "language_info": {
+   "name": "python"
+  }
+ },
+ "nbformat": 4,
+ "nbformat_minor": 0
+}

hubconf.py

@@ -1,5 +1,6 @@
 dependencies = ['torch', 'torchaudio']
 import torch
+import os
 import json
 from utils_vad import (init_jit_model,
                        get_speech_timestamps,
@@ -10,16 +11,32 @@ from utils_vad import (init_jit_model,
                        read_audio,
                        VADIterator,
                        collect_chunks,
-                       drop_chunks)
+                       drop_chunks,
+                       Validator,
+                       OnnxWrapper)
 
 
-def silero_vad(**kwargs):
+def versiontuple(v):
+    return tuple(map(int, (v.split('+')[0].split("."))))
+
+
+def silero_vad(onnx=False, force_onnx_cpu=False):
     """Silero Voice Activity Detector
     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()
+
-    model = init_jit_model(model_path=f'{hub_dir}/snakers4_silero-vad_master/files/silero_vad.jit')
+    if not onnx:
+        installed_version = torch.__version__
+        supported_version = '1.12.0'
+        if versiontuple(installed_version) < versiontuple(supported_version):
+            raise Exception(f'Please install torch {supported_version} or greater ({installed_version} installed)')
+
+    model_dir = os.path.join(os.path.dirname(__file__), 'files')
+    if onnx:
+        model = OnnxWrapper(os.path.join(model_dir, 'silero_vad.onnx'), force_onnx_cpu)
+    else:
+        model = init_jit_model(os.path.join(model_dir, 'silero_vad.jit'))
     utils = (get_speech_timestamps,
              save_audio,
              read_audio,
@@ -29,13 +46,16 @@ def silero_vad(**kwargs):
     return model, utils
 
 
-def silero_number_detector(**kwargs):
+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
     """
-    hub_dir = torch.hub.get_dir()
+    if onnx:
-    model = init_jit_model(model_path=f'{hub_dir}/snakers4_silero-vad_master/files/number_detector.jit')
+        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,
@@ -45,32 +65,39 @@ def silero_number_detector(**kwargs):
     return model, utils
 
 
-def silero_lang_detector(**kwargs):
+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
     """
-    hub_dir = torch.hub.get_dir()
+    if onnx:
-    model = init_jit_model(model_path=f'{hub_dir}/snakers4_silero-vad_master/files/number_detector.jit')
+        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(**kwargs):
+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:
-    model = init_jit_model(model_path=f'{hub_dir}/snakers4_silero-vad_master/files/lang_classifier_95.jit')
+        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:
+    model_dir = os.path.join(os.path.dirname(__file__), 'files')
+    with open(os.path.join(model_dir, '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:
+    with open(os.path.join(model_dir, 'lang_group_dict_95.json'), 'r') as f:
         lang_group_dict = json.load(f)
 
     utils = (get_language_and_group, read_audio)

silero-vad.ipynb

@@ -1,21 +1,12 @@
 {
  "cells": [
-  {
-   "cell_type": "markdown",
-   "metadata": {
-    "id": "sVNOuHQQjsrp"
-   },
-   "source": [
-    "# PyTorch Examples"
-   ]
-  },
   {
    "cell_type": "markdown",
    "metadata": {
     "id": "FpMplOCA2Fwp"
    },
    "source": [
-    "## VAD"
+    "#VAD"
    ]
   },
   {
@@ -25,7 +16,7 @@
     "id": "62A6F_072Fwq"
    },
    "source": [
-    "### Install Dependencies"
+    "## Install Dependencies"
    ]
   },
   {
@@ -42,26 +33,39 @@
     "# this assumes that you have a relevant version of PyTorch installed\n",
     "!pip install -q torchaudio\n",
     "\n",
-    "SAMPLE_RATE = 16000\n",
+    "SAMPLING_RATE = 16000\n",
     "\n",
-    "import glob\n",
     "import torch\n",
     "torch.set_num_threads(1)\n",
     "\n",
     "from IPython.display import Audio\n",
     "from pprint import pprint\n",
-    "\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": "pSifus5IilRp"
+   },
+   "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_vad',\n",
-    "                              force_reload=True)\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\n",
+    " collect_chunks) = utils"
-    "\n",
-    "files_dir = torch.hub.get_dir() + '/snakers4_silero-vad_master/files'"
    ]
   },
   {
@@ -70,7 +74,7 @@
     "id": "fXbbaUO3jsrw"
    },
    "source": [
-    "### Full Audio"
+    "## Full Audio"
    ]
   },
   {
@@ -90,9 +94,9 @@
    },
    "outputs": [],
    "source": [
-    "wav = read_audio(f'{files_dir}/en.wav', sampling_rate=SAMPLE_RATE)\n",
+    "wav = read_audio('en_example.wav', sampling_rate=SAMPLING_RATE)\n",
     "# get speech timestamps from full audio file\n",
-    "speech_timestamps = get_speech_timestamps(wav, model, sampling_rate=SAMPLE_RATE)\n",
+    "speech_timestamps = get_speech_timestamps(wav, model, sampling_rate=SAMPLING_RATE)\n",
     "pprint(speech_timestamps)"
    ]
   },
@@ -106,7 +110,7 @@
    "source": [
     "# merge all speech chunks to one audio\n",
     "save_audio('only_speech.wav',\n",
-    "           collect_chunks(speech_timestamps, wav), sampling_rate=16000) \n",
+    "           collect_chunks(speech_timestamps, wav), sampling_rate=SAMPLING_RATE) \n",
     "Audio('only_speech.wav')"
    ]
   },
@@ -116,7 +120,7 @@
     "id": "iDKQbVr8jsry"
    },
    "source": [
-    "### Stream imitation example"
+    "## Stream imitation example"
    ]
   },
   {
@@ -130,11 +134,14 @@
     "## using VADIterator class\n",
     "\n",
     "vad_iterator = VADIterator(model)\n",
-    "wav = read_audio(f'{files_dir}/en.wav', sampling_rate=SAMPLE_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",
     "for i in range(0, len(wav), window_size_samples):\n",
-    "    speech_dict = vad_iterator(wav[i: i+ window_size_samples], return_seconds=True)\n",
+    "    chunk = wav[i: i+ window_size_samples]\n",
+    "    if len(chunk) < window_size_samples:\n",
+    "      break\n",
+    "    speech_dict = vad_iterator(chunk, return_seconds=True)\n",
     "    if speech_dict:\n",
     "        print(speech_dict, end=' ')\n",
     "vad_iterator.reset_states() # reset model states after each audio"
@@ -150,14 +157,18 @@
    "source": [
     "## just probabilities\n",
     "\n",
-    "wav = read_audio(f'{files_dir}/en.wav', sampling_rate=SAMPLE_RATE)\n",
+    "wav = read_audio('en_example.wav', sampling_rate=SAMPLING_RATE)\n",
     "speech_probs = []\n",
     "window_size_samples = 1536\n",
     "for i in range(0, len(wav), window_size_samples):\n",
-    "    speech_prob = model(wav[i: i+ window_size_samples], SAMPLE_RATE).item()\n",
+    "    chunk = wav[i: i+ window_size_samples]\n",
+    "    if len(chunk) < window_size_samples:\n",
+    "      break\n",
+    "    speech_prob = model(chunk, SAMPLING_RATE).item()\n",
     "    speech_probs.append(speech_prob)\n",
+    "vad_iterator.reset_states() # reset model states after each audio\n",
     "\n",
-    "pprint(speech_probs[:100])"
+    "print(speech_probs[:10]) # first 10 chunks predicts"
    ]
   },
   {
@@ -167,7 +178,7 @@
     "id": "36jY0niD2Fww"
    },
    "source": [
-    "## Number detector"
+    "# Number detector"
    ]
   },
   {
@@ -178,7 +189,7 @@
     "id": "scd1DlS42Fwx"
    },
    "source": [
-    "### Install Dependencies"
+    "## Install Dependencies"
    ]
   },
   {
@@ -193,26 +204,41 @@
     "#@title Install and Import Dependencies\n",
     "\n",
     "# this assumes that you have a relevant version of PyTorch installed\n",
-    "!pip install -q torchaudio soundfile\n",
+    "!pip install -q torchaudio\n",
+    "\n",
+    "SAMPLING_RATE = 16000\n",
     "\n",
-    "import glob\n",
     "import torch\n",
     "torch.set_num_threads(1)\n",
     "\n",
     "from IPython.display import Audio\n",
     "from pprint import pprint\n",
-    "\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",
+    "                              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",
+    " drop_chunks) = utils\n"
-    "\n",
-    "files_dir = torch.hub.get_dir() + '/snakers4_silero-vad_master/files'"
    ]
   },
   {
@@ -223,7 +249,7 @@
     "id": "qhPa30ij2Fwy"
    },
    "source": [
-    "### Full audio"
+    "## Full audio"
    ]
   },
   {
@@ -235,7 +261,7 @@
    },
    "outputs": [],
    "source": [
-    "wav = read_audio(f'{files_dir}/en_num.wav')\n",
+    "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)"
@@ -250,11 +276,10 @@
    },
    "outputs": [],
    "source": [
-    "sample_rate = 16000\n",
     "# convert ms in timestamps to samples\n",
     "for timestamp in number_timestamps:\n",
-    "    timestamp['start'] = int(timestamp['start'] * sample_rate / 1000)\n",
+    "    timestamp['start'] = int(timestamp['start'] * SAMPLING_RATE / 1000)\n",
-    "    timestamp['end'] = int(timestamp['end'] * sample_rate / 1000)"
+    "    timestamp['end'] = int(timestamp['end'] * SAMPLING_RATE / 1000)"
    ]
   },
   {
@@ -268,7 +293,7 @@
    "source": [
     "# merge all number chunks to one audio\n",
     "save_audio('only_numbers.wav',\n",
-    "           collect_chunks(number_timestamps, wav), sample_rate) \n",
+    "           collect_chunks(number_timestamps, wav), SAMPLING_RATE) \n",
     "Audio('only_numbers.wav')"
    ]
   },
@@ -283,7 +308,7 @@
    "source": [
     "# drop all number chunks from audio\n",
     "save_audio('no_numbers.wav',\n",
-    "           drop_chunks(number_timestamps, wav), sample_rate) \n",
+    "           drop_chunks(number_timestamps, wav), SAMPLING_RATE) \n",
     "Audio('no_numbers.wav')"
    ]
   },
@@ -294,7 +319,7 @@
     "id": "PnKtJKbq2Fwz"
    },
    "source": [
-    "## Language detector"
+    "# Language detector"
    ]
   },
   {
@@ -305,7 +330,7 @@
     "id": "F5cAmMbP2Fwz"
    },
    "source": [
-    "### Install Dependencies"
+    "## Install Dependencies"
    ]
   },
   {
@@ -320,23 +345,37 @@
     "#@title Install and Import Dependencies\n",
     "\n",
     "# this assumes that you have a relevant version of PyTorch installed\n",
-    "!pip install -q torchaudio soundfile\n",
+    "!pip install -q torchaudio\n",
+    "\n",
+    "SAMPLING_RATE = 16000\n",
     "\n",
-    "import glob\n",
     "import torch\n",
     "torch.set_num_threads(1)\n",
     "\n",
     "from IPython.display import Audio\n",
     "from pprint import pprint\n",
-    "\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",
+    "                              force_reload=True,\n",
+    "                              onnx=USE_ONNX)\n",
     "\n",
-    "(get_language,\n",
+    "get_language, read_audio = utils"
-    " read_audio) = utils\n",
-    "\n",
-    "files_dir = torch.hub.get_dir() + '/snakers4_silero-vad_master/files'"
    ]
   },
   {
@@ -347,7 +386,7 @@
     "id": "iC696eMX2Fwz"
    },
    "source": [
-    "### Full audio"
+    "## Full audio"
    ]
   },
   {
@@ -359,266 +398,10 @@
    },
    "outputs": [],
    "source": [
-    "wav = read_audio(f'{files_dir}/en.wav')\n",
+    "wav = read_audio('en_example.wav', sampling_rate=SAMPLING_RATE)\n",
     "lang = get_language(wav, model)\n",
     "print(lang)"
    ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {
-    "id": "57avIBd6jsrz"
-   },
-   "source": [
-    "# ONNX Example"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {
-    "id": "hEhnfORV2Fw0"
-   },
-   "source": [
-    "## VAD"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {
-    "id": "Cy7y-NAyALSe"
-   },
-   "source": [
-    "**TO BE DONE**"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {
-    "heading_collapsed": true,
-    "id": "7QMvUvpg2Fw4"
-   },
-   "source": [
-    "## Number detector"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {
-    "heading_collapsed": true,
-    "hidden": true,
-    "id": "tBPDkpHr2Fw4"
-   },
-   "source": [
-    "### Install Dependencies"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "cellView": "form",
-    "hidden": true,
-    "id": "PdjGd56R2Fw5"
-   },
-   "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 soundfile onnxruntime\n",
-    "\n",
-    "import glob\n",
-    "import torch\n",
-    "import onnxruntime\n",
-    "from pprint import pprint\n",
-    "\n",
-    "from IPython.display import Audio\n",
-    "\n",
-    "_, utils = torch.hub.load(repo_or_dir='snakers4/silero-vad',\n",
-    "                              model='silero_number_detector',\n",
-    "                              force_reload=True)\n",
-    "\n",
-    "(get_number_ts,\n",
-    " save_audio,\n",
-    " read_audio,\n",
-    " collect_chunks,\n",
-    " drop_chunks) = utils\n",
-    "\n",
-    "files_dir = torch.hub.get_dir() + '/snakers4_silero-vad_master/files'\n",
-    "\n",
-    "def init_onnx_model(model_path: str):\n",
-    "    return onnxruntime.InferenceSession(model_path)\n",
-    "\n",
-    "def validate_onnx(model, inputs):\n",
-    "    with torch.no_grad():\n",
-    "        ort_inputs = {'input': inputs.cpu().numpy()}\n",
-    "        outs = model.run(None, ort_inputs)\n",
-    "        outs = [torch.Tensor(x) for x in outs]\n",
-    "    return outs"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {
-    "heading_collapsed": true,
-    "hidden": true,
-    "id": "I9QWSFZh2Fw5"
-   },
-   "source": [
-    "### Full Audio"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "hidden": true,
-    "id": "_r6QZiwu2Fw5"
-   },
-   "outputs": [],
-   "source": [
-    "model = init_onnx_model(f'{files_dir}/number_detector.onnx')\n",
-    "wav = read_audio(f'{files_dir}/en_num.wav')\n",
-    "\n",
-    "# get number timestamps from full audio file\n",
-    "number_timestamps = get_number_ts(wav, model, run_function=validate_onnx)\n",
-    "pprint(number_timestamps)"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "hidden": true,
-    "id": "FN4aDwLV2Fw5"
-   },
-   "outputs": [],
-   "source": [
-    "sample_rate = 16000\n",
-    "# convert ms in timestamps to samples\n",
-    "for timestamp in number_timestamps:\n",
-    "    timestamp['start'] = int(timestamp['start'] * sample_rate / 1000)\n",
-    "    timestamp['end'] = int(timestamp['end'] * sample_rate / 1000)"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "hidden": true,
-    "id": "JnvS6WTK2Fw5"
-   },
-   "outputs": [],
-   "source": [
-    "# merge all number chunks to one audio\n",
-    "save_audio('only_numbers.wav',\n",
-    "           collect_chunks(number_timestamps, wav), 16000) \n",
-    "Audio('only_numbers.wav')"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "hidden": true,
-    "id": "yUxOcOFG2Fw6"
-   },
-   "outputs": [],
-   "source": [
-    "# drop all number chunks from audio\n",
-    "save_audio('no_numbers.wav',\n",
-    "           drop_chunks(number_timestamps, wav), 16000) \n",
-    "Audio('no_numbers.wav')"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {
-    "heading_collapsed": true,
-    "id": "SR8Bgcd52Fw6"
-   },
-   "source": [
-    "## Language detector"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {
-    "heading_collapsed": true,
-    "hidden": true,
-    "id": "PBnXPtKo2Fw6"
-   },
-   "source": [
-    "### Install Dependencies"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "cellView": "form",
-    "hidden": true,
-    "id": "iNkDWJ3H2Fw6"
-   },
-   "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 soundfile onnxruntime\n",
-    "\n",
-    "import glob\n",
-    "import torch\n",
-    "import onnxruntime\n",
-    "from pprint import pprint\n",
-    "\n",
-    "from IPython.display import Audio\n",
-    "\n",
-    "_, utils = torch.hub.load(repo_or_dir='snakers4/silero-vad',\n",
-    "                              model='silero_lang_detector',\n",
-    "                              force_reload=True)\n",
-    "\n",
-    "(get_language,\n",
-    " read_audio) = utils\n",
-    "\n",
-    "files_dir = torch.hub.get_dir() + '/snakers4_silero-vad_master/files'\n",
-    "\n",
-    "def init_onnx_model(model_path: str):\n",
-    "    return onnxruntime.InferenceSession(model_path)\n",
-    "\n",
-    "def validate_onnx(model, inputs):\n",
-    "    with torch.no_grad():\n",
-    "        ort_inputs = {'input': inputs.cpu().numpy()}\n",
-    "        outs = model.run(None, ort_inputs)\n",
-    "        outs = [torch.Tensor(x) for x in outs]\n",
-    "    return outs"
-   ]
-  },
-  {
-   "cell_type": "markdown",
-   "metadata": {
-    "hidden": true,
-    "id": "G8N8oP4q2Fw6"
-   },
-   "source": [
-    "### Full Audio"
-   ]
-  },
-  {
-   "cell_type": "code",
-   "execution_count": null,
-   "metadata": {
-    "hidden": true,
-    "id": "WHXnh9IV2Fw6"
-   },
-   "outputs": [],
-   "source": [
-    "model = init_onnx_model(f'{files_dir}/number_detector.onnx')\n",
-    "wav = read_audio(f'{files_dir}/en.wav')\n",
-    "\n",
-    "lang = get_language(wav, model, run_function=validate_onnx)\n",
-    "print(lang)"
-   ]
   }
  ],
  "metadata": {

utils_vad.py

@@ -7,14 +7,113 @@ import warnings
 languages = ['ru', 'en', 'de', 'es']
 
 
-def validate(model,
+class OnnxWrapper():
-             inputs: torch.Tensor,
+
-             **kwargs):
+    def __init__(self, path, force_onnx_cpu=False):
-    with torch.no_grad():
+        import numpy as np
-        outs = model(inputs, **kwargs)
+        global np
-    if len(outs.shape) == 1:
+        import onnxruntime
-        return outs[1:]
+        if force_onnx_cpu and 'CPUExecutionProvider' in onnxruntime.get_available_providers():
-    return outs[:, 1]  # 0 for noise, 1 for speech
+            self.session = onnxruntime.InferenceSession(path, providers=['CPUExecutionProvider'])
+        else:
+            self.session = onnxruntime.InferenceSession(path)
+        self.session.intra_op_num_threads = 1
+        self.session.inter_op_num_threads = 1
+
+        self.reset_states()
+        self.sample_rates = [8000, 16000]
+
+    def _validate_input(self, x, sr: int):
+        if x.dim() == 1:
+            x = x.unsqueeze(0)
+        if x.dim() > 2:
+            raise ValueError(f"Too many dimensions for input audio chunk {x.dim()}")
+
+        if sr != 16000 and (sr % 16000 == 0):
+            step = sr // 16000
+            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._last_sr = 0
+        self._last_batch_size = 0
+
+    def __call__(self, x, sr: int):
+
+        x, sr = self._validate_input(x, sr)
+        batch_size = x.shape[0]
+
+        if not self._last_batch_size:
+            self.reset_states(batch_size)
+        if (self._last_sr) and (self._last_sr != sr):
+            self.reset_states(batch_size)
+        if (self._last_batch_size) and (self._last_batch_size != batch_size):
+            self.reset_states(batch_size)
+
+        if sr in [8000, 16000]:
+            ort_inputs = {'input': x.numpy(), 'h': self._h, 'c': self._c, 'sr': np.array(sr)}
+            ort_outs = self.session.run(None, ort_inputs)
+            out, self._h, self._c = ort_outs
+        else:
+            raise ValueError()
+
+        self._last_sr = sr
+        self._last_batch_size = batch_size
+
+        out = torch.tensor(out)
+        return out
+
+    def audio_forward(self, x, sr: int, num_samples: int = 512):
+        outs = []
+        x, sr = self._validate_input(x, sr)
+
+        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)
+            outs.append(out_chunk)
+
+        stacked = torch.cat(outs, dim=1)
+        return stacked.cpu()
+
+
+class Validator():
+    def __init__(self, url, force_onnx_cpu):
+        self.onnx = True if url.endswith('.onnx') else False
+        torch.hub.download_url_to_file(url, 'inf.model')
+        if self.onnx:
+            import onnxruntime
+            if force_onnx_cpu and 'CPUExecutionProvider' in onnxruntime.get_available_providers():
+                self.model = onnxruntime.InferenceSession('inf.model', providers=['CPUExecutionProvider'])
+            else:
+                self.model = onnxruntime.InferenceSession('inf.model')
+        else:
+            self.model = init_jit_model(model_path='inf.model')
+
+    def __call__(self, inputs: torch.Tensor):
+        with torch.no_grad():
+            if self.onnx:
+                ort_inputs = {'input': inputs.cpu().numpy()}
+                outs = self.model.run(None, ort_inputs)
+                outs = [torch.Tensor(x) for x in outs]
+            else:
+                outs = self.model(inputs)
+
+        return outs
 
 
 def read_audio(path: str,
@@ -65,7 +164,7 @@ def get_speech_timestamps(audio: torch.Tensor,
                           sampling_rate: int = 16000,
                           min_speech_duration_ms: int = 250,
                           min_silence_duration_ms: int = 100,
-                          window_size_samples: int = 1536,
+                          window_size_samples: int = 512,
                           speech_pad_ms: int = 30,
                           return_seconds: bool = False,
                           visualize_probs: bool = False):
@@ -125,8 +224,16 @@ def get_speech_timestamps(audio: torch.Tensor,
         if len(audio.shape) > 1:
             raise ValueError("More than one dimension in audio. Are you trying to process audio with 2 channels?")
 
+    if sampling_rate > 16000 and (sampling_rate % 16000 == 0):
+        step = sampling_rate // 16000
+        sampling_rate = 16000
+        audio = audio[::step]
+        warnings.warn('Sampling rate is a multiply of 16000, casting to 16000 manually!')
+    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 1536 for 8000 sample rate!')
+        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')
 
@@ -174,7 +281,7 @@ def get_speech_timestamps(audio: torch.Tensor,
                 triggered = False
                 continue
 
-    if current_speech:
+    if current_speech and (audio_length_samples - current_speech['start']) > min_speech_samples:
         current_speech['end'] = audio_length_samples
         speeches.append(current_speech)
 
@@ -187,7 +294,8 @@ def get_speech_timestamps(audio: torch.Tensor,
                 speech['end'] += int(silence_duration // 2)
                 speeches[i+1]['start'] = int(max(0, speeches[i+1]['start'] - silence_duration // 2))
             else:
-                speech['end'] += int(speech_pad_samples)
+                speech['end'] = int(min(audio_length_samples, speech['end'] + speech_pad_samples))
+                speeches[i+1]['start'] = int(max(0, speeches[i+1]['start'] - speech_pad_samples))
         else:
             speech['end'] = int(min(audio_length_samples, speech['end'] + speech_pad_samples))
 
@@ -195,6 +303,10 @@ def get_speech_timestamps(audio: torch.Tensor,
         for speech_dict in speeches:
             speech_dict['start'] = round(speech_dict['start'] / sampling_rate, 1)
             speech_dict['end'] = round(speech_dict['end'] / sampling_rate, 1)
+    elif step > 1:
+        for speech_dict in speeches:
+            speech_dict['start'] *= step
+            speech_dict['end'] *= step
 
     if visualize_probs:
         make_visualization(speech_probs, window_size_samples / sampling_rate)
@@ -206,10 +318,9 @@ def get_number_ts(wav: torch.Tensor,
                   model,
                   model_stride=8,
                   hop_length=160,
-                  sample_rate=16000,
+                  sample_rate=16000):
-                  run_function=validate):
     wav = torch.unsqueeze(wav, dim=0)
-    perframe_logits = run_function(model, wav)[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:
@@ -236,10 +347,9 @@ def get_number_ts(wav: torch.Tensor,
 
 
 def get_language(wav: torch.Tensor,
-                 model,
+                 model):
-                 run_function=validate):
     wav = torch.unsqueeze(wav, dim=0)
-    lang_logits = run_function(model, wav)[2]
+    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]
@@ -249,10 +359,9 @@ def get_language_and_group(wav: torch.Tensor,
                            model,
                            lang_dict: dict,
                            lang_group_dict: dict,
-                           top_n=1,
+                           top_n=1):
-                           run_function=validate):
     wav = torch.unsqueeze(wav, dim=0)
-    lang_logits, lang_group_logits = run_function(model, wav)
+    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()
@@ -304,6 +413,10 @@ class VADIterator:
         self.model = model
         self.threshold = threshold
         self.sampling_rate = sampling_rate
+
+        if sampling_rate not in [8000, 16000]:
+            raise ValueError('VADIterator does not support sampling rates other than [8000, 16000]')
+
         self.min_silence_samples = sampling_rate * min_silence_duration_ms / 1000
         self.speech_pad_samples = sampling_rate * speech_pad_ms / 1000
         self.reset_states()
@@ -323,6 +436,13 @@ class VADIterator:
         return_seconds: bool (default - False)
             whether return timestamps in seconds (default - samples)
         """
+
+        if not torch.is_tensor(x):
+            try:
+                x = torch.Tensor(x)
+            except:
+                raise TypeError("Audio cannot be casted to tensor. Cast it manually")
+
         window_size_samples = len(x[0]) if x.dim() == 2 else len(x)
         self.current_sample += window_size_samples