Wavesurfer-export-audio-plugin NPM

WaveSurfer Export Audio Plugin

WaveSurfer.js Export Audio Plugin

NOTE This plugin works for WebAudio backend only for now.

Usage

import ExportAudioPlugin from "wavesurfer-export-audio-plugin";
const wavesurfer = WaveSurfer.create({
  container: document.getElementById("wavesurfer"),
  backend: "WebAudio", // Just WebAudio for now..
  ...
  plugins: [
      ...
      ExportAudioPlugin.create(),
      ...
  ],
});

document.getElementById('some-button').onclick = async () => {

    const lowpass = wavesurfer.backend.ac.createBiquadFilter({ type: 'lowpass' })
    wavesurfer.backend.setFilter(lowpass)

    const renderedBuffer = await wavesurfer.getRenderedAudioBuffer(); // Lowpass filter applied AudioBuffer
    
    wavesurfer.backend.disconnectFilters()
}