The latest articles on DEV Community by kama-meshi (@kama_meshi). https://dev.to/kama_meshi https://media2.dev.to/dynamic/image/width=90,height=90,fit=cover,gravity=auto,format=auto/https:%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Fuser%2Fprofile_image%2F867614%2Fc75fcdd0-5c61-464d-a70f-123e92517ef2.gif https://dev.to/kama_meshi en kama-meshi Thu, 02 Jun 2022 09:28:29 +0000 https://dev.to/kama_meshi/the-awesome-speech-recognition-toolkit-vosk-i6o https://dev.to/kama_meshi/the-awesome-speech-recognition-toolkit-vosk-i6o <h2> What is Vosk? </h2> <p>Vosk is a speech recognition toolkit supporting over 20 languages.<br> The language model is 50MB light and easy to embed. So you will easily can do speech recognition completely offline.</p> <p>Vosk provides bindings for Python, Java, C#, and also Node.js!</p> <ul> <li>Supports 20+ languages and dialects </li> <li>Works offline, even on lightweight devices - Raspberry Pi, Android, iOS</li> </ul> <p>See <a href="https://alphacephei.com/vosk/" rel="noopener noreferrer">Vosk's page</a> for detail.</p> <h2> Let's try! </h2> <h3> Install Vosk </h3> <p>Now you can try Vosk with Python!<br> Vosk can be installed by pip. However, I prefer <a href="https://python-poetry.org/" rel="noopener noreferrer">poetry</a>, so I'll install it there.</p> <blockquote> <p>⚠️ Poetry will try to install the latest version (0.3.38). But that version is not compatible with MacOS. So I installed it by specifying the version to be installed by pip. (as of 2022-05-19)</p> </blockquote> <p>And you can download the python module from <a href="https://github.com/alphacep/vosk-api/blob/v0.3.32/python/example/test_simple.py" rel="noopener noreferrer">Vosk examples</a>.</p> <h3> Download the language model </h3> <p>The language model is available <a href="https://alphacephei.com/vosk/models" rel="noopener noreferrer">here</a>. Extract the zip file and place it.</p> <h3> Prepare an audio file </h3> <p>You will need an audio file in the correct format - PCM 16khz 16bit mono.</p> <blockquote> <p>If you are English speaker, you can get <a href="https://github.com/alphacep/vosk-api/blob/v0.3.32/python/example/test.wav" rel="noopener noreferrer">the test voice</a> from Vosk example.</p> </blockquote> <p>You can convert with <a href="https://ffmpeg.org/" rel="noopener noreferrer">ffmpeg</a>.</p> <div class="highlight js-code-highlight"> <pre class="highlight shell"><code> ffmpeg <span class="nt">-i</span> my_voice.wav <span class="nt">-ar</span> 16000 <span class="nt">-ac</span> 1 <span class="nt">-f</span> s16le my_voice_16khz.wav </code></pre> </div> <h3> Run Vosk </h3> <p>Run the python module...</p> <p><a href="https://media.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2F9crv5rjm4ywx4rs7lj4z.gif" class="article-body-image-wrapper"><img src="https://media.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev-to-uploads.s3.amazonaws.com%2Fuploads%2Farticles%2F9crv5rjm4ywx4rs7lj4z.gif" alt="Run in terminal"></a></p> <p>Done it!! 🎉<br> There are some differences. But, Vosk also recognized Japanese Kanji characters. 🀄</p> <blockquote> <p>I'm a Japanese speaker, so recognized a Japanese audio file.<br> The text of the audio is "ご視聴ありがとうございました！グッドボタンとチャンネル登録よろしくお願いします！".</p> </blockquote> <p>The complete commands is below.</p> <div class="highlight js-code-highlight"> <pre class="highlight shell"><code> poetry add vosk@0.3.32 curl <span class="nt">-O</span> https://raw.githubusercontent.com/alphacep/vosk-api/v0.3.32/python/example/test_simple.py curl <span class="nt">-O</span> https://alphacephei.com/vosk/models/vosk-model-small-ja-0.22.zip unzip vosk-model-small-ja-0.22.zip <span class="nb">mv </span>vosk-model-small-ja-0.22/ model/ poetry run python test_simple.py my_voice_16khz.wav </code></pre> </div> <p>The codes are on GitHub and Replit.<br> I hope you'll enjoy Vosk too! Thank you.</p> <div class="ltag-github-readme-tag"> <div class="readme-overview"> <h2> <img src="https://media.dev.to/dynamic/image/width=800%2Cheight=%2Cfit=scale-down%2Cgravity=auto%2Cformat=auto/https%3A%2F%2Fdev.to%2Fassets%2Fgithub-logo-5a155e1f9a670af7944dd5e12375bc76ed542ea80224905ecaf878b9157cdefc.svg" alt="GitHub logo"> <a href="https://github.com/kama-meshi" rel="noopener noreferrer"> kama-meshi </a> / <a href="https://github.com/kama-meshi/HelloVosk" rel="noopener noreferrer"> HelloVosk </a> </h2> <h3> Sample Vosk repl with Python. </h3> </div> <div class="ltag-github-body"> <div id="readme" class="md"> <div class="markdown-heading"> <h1 class="heading-element">Hello Vosk</h1> </div> <p>This is a sample repl for <a href="https://alphacephei.com/vosk/" rel="nofollow noopener noreferrer">Vosk</a> with Python.</p> <div class="markdown-heading"> <h2 class="heading-element">Sample voice</h2> </div> <p>Let's recognize this <a href="https://www.koeyasan.com/voices/558" rel="nofollow noopener noreferrer">voice</a> 🎤</p> <blockquote> <p>"ご視聴ありがとうございました！グッドボタンとチャンネル登録よろしくお願いします！"</p> </blockquote> <div class="markdown-heading"> <h2 class="heading-element">Usage</h2> </div> <div class="highlight highlight-source-shell notranslate position-relative overflow-auto js-code-highlight"> <pre>poetry install poetry run python main.py</pre> </div> <p>And my repl is in <a href="https://replit.com" rel="nofollow noopener noreferrer">replit</a>.</p> <blockquote> <p><a href="https://replit.com/@kama-meshi/HelloVosk" rel="nofollow noopener noreferrer">https://replit.com/@kama-meshi/HelloVosk</a></p> </blockquote> <div class="markdown-heading"> <h2 class="heading-element">Special Thanks</h2> </div> <ul> <li>Voice: <a href="https://www.koeyasan.com/" rel="nofollow noopener noreferrer">こえやさん</a> </li> </ul> </div> </div> <br> <div class="gh-btn-container"><a class="gh-btn" href="https://github.com/kama-meshi/HelloVosk" rel="noopener noreferrer">View on GitHub</a></div> <br> </div> <br> <div class="crayons-card c-embed text-styles text-styles--secondary"> <a href="https://replit.com/@kama-meshi/HelloVosk" rel="noopener noreferrer"> replit.com </a> </div> python machinelearning node