WaveSurfer Channel Selecter Plugin

WaveSurfer.js Channel Selecter Plugin

NOTE This plugin works for WebAudio backend only for now.

Usage

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

document.getElementById('some-button').onclick = () => {
    wavesurfer.setActiveChannel(1);
    // wavesurfer.setActiveChannel(1, 2);
    // wavesurfer.setActiveChannel([1, 2, 3]);
}

// Reset wavesurfer and show all channels.
document.getElementById('reset-button').onclick = () => {
    wavesurfer.showAllChannels();
}

wavesurfer.on("channel-selected", (selectedChannels) => {
    console.log(selectedChannels) // [1]
});

Installation

$ npm i wavesurfer-channel-selecter-plugin

Methods

• setActiveChannel - Draw selected channels.
• showAllChannels - Reset to waveform.

Events

• channel-selected - Trigger when selected channels are updated. Selected channels will pass as first argument.

Screens

Initial View

3th, 4th and 5th channels selected view

Todos

• Support for MediaElement backend.
• Tests

License

MIT

Free Software, Hell Yeah!