audiodata2pcm

encode a AudioData frame from WebCodecs API to PCM format

Installation

NPM Package

https://www.npmjs.com/package/audiodata2pcm

CDN URL

<script src="https://unpkg.com/audiodata2pcm@0.1.1/dist/audiodata2pcm.js"></script>

Output format

PCM Signed 16-bit 16kHz as an Int16Array

Usage

const stream = await navigator.mediaDevices.getUserMedia({ audio: true });

const trackProcessor = new MediaStreamTrackProcessor({
  track: stream.getAudioTracks()[0],
});
trackProcessor.readable.pipeTo(
  new WritableStream({
    write: async (frame) => {
      const data = audiodata2pcm(frame);
      // ...
    },
    close() {
      console.log(`track processor closed`);
    },
  })
);

Credits

GUO YANKE, MIT License