@ricky0123/vad-web/dist/vad.worklet.bundle.min.js

Powerful, user-friendly voice activity detector (VAD) for the browser

(()=>{"use strict";var e={710:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.log=void 0;const s=e=>t=>{console.log(`VAD | ${e} >`,t)};t.log={error:s("error"),debug:s("debug"),warn:s("warn")}},954:(e,t)=>{var s;Object.defineProperty(t,"__esModule",{value:!0}),t.Message=void 0,function(e){e.AudioFrame="AUDIO_FRAME",e.SpeechStart="SPEECH_START",e.VADMisfire="VAD_MISFIRE",e.SpeechEnd="SPEECH_END",e.SpeechStop="SPEECH_STOP",e.SpeechRealStart="SPEECH_REAL_START",e.FrameProcessed="FRAME_PROCESSED"}(s||(t.Message=s={}))},825:(e,t,s)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.Resampler=void 0;const r=s(710);t.Resampler=class{constructor(e){this.options=e,this.process=e=>{const t=[];for(const s of e)for(this.inputBuffer.push(s);this.hasEnoughDataForFrame();){const e=this.generateOutputFrame();t.push(e)}return t},e.nativeSampleRate<16e3&&r.log.error("nativeSampleRate is too low. Should have 16000 = targetSampleRate <= nativeSampleRate"),this.inputBuffer=[]}async*stream(e){for(const t of e)for(this.inputBuffer.push(t);this.hasEnoughDataForFrame();){const e=this.generateOutputFrame();yield e}}hasEnoughDataForFrame(){return this.inputBuffer.length*this.options.targetSampleRate/this.options.nativeSampleRate>=this.options.targetFrameSize}generateOutputFrame(){const e=new Float32Array(this.options.targetFrameSize);let t=0,s=0;for(;t<this.options.targetFrameSize;){let r=0,o=0;for(;s<Math.min(this.inputBuffer.length,(t+1)*this.options.nativeSampleRate/this.options.targetSampleRate);){const e=this.inputBuffer[s];void 0!==e&&(r+=e,o++),s++}e[t]=r/o,t++}return this.inputBuffer=this.inputBuffer.slice(s),e}}}},t={};function s(r){var o=t[r];if(void 0!==o)return o.exports;var a=t[r]={exports:{}};return e[r](a,a.exports,s),a.exports}(()=>{const e=s(710),t=s(954),r=s(825);class o extends AudioWorkletProcessor{constructor(s){super(),this._stopProcessing=!1,this.options=s.processorOptions,this.port.onmessage=s=>{s.data===t.Message.SpeechStop&&(e.log.debug("Worklet received speech stop message"),this._stopProcessing=!0)},this.resampler=new r.Resampler({nativeSampleRate:sampleRate,targetSampleRate:16e3,targetFrameSize:this.options.frameSamples})}process(e){if(this._stopProcessing)return!1;const s=e[0];if(void 0===s)return!0;const r=s[0];if(void 0===r)return!0;const o=this.resampler.process(r);for(const e of o)this.port.postMessage({message:t.Message.AudioFrame,data:e.buffer},[e.buffer]);return!0}}registerProcessor("vad-helper-worklet",o)})()})();