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    voice-activity-detection
    DefinitelyTyped icon, indicating that this package has TypeScript declarations provided by the separate @types/voice-activity-detection package

    0.0.5 • Public • Published

    voice-activity-detection

    Syntax

    vad(audioContext, stream [, options]);

    Default options:

    {
      fftSize: 1024,
      bufferLen: 1024,
      smoothingTimeConstant: 0.2,
      minCaptureFreq: 85,         // in Hz
      maxCaptureFreq: 255,        // in Hz
      noiseCaptureDuration: 1000, // in ms
      minNoiseLevel: 0.3,         // from 0 to 1
      maxNoiseLevel: 0.7,         // from 0 to 1
      avgNoiseMultiplier: 1.2,
      onVoiceStart: function() {},
      onVoiceStop: function() {},
      onUpdate: function(val) {}
    }
    • minCaptureFreq/maxCaptureFreq - human voice frequency range
    • noiseCaptureDuration - time for measuring average env. noise before starting voice activity detection
    • minNoiseLevel/maxNoiseLevel - env. noise level normalization range (during noiseCaptureDuration)
    • avgNoiseMultiplier - multiplier for the average env. noise level to set activity/inactivity state toggle

    Usage

    See example code

    Test

    npm run test

    Install

    npm i voice-activity-detection

    DownloadsWeekly Downloads

    421

    Version

    0.0.5

    License

    MIT

    Last publish

    Collaborators

    • namniak