AudioDecoder: AudioDecoder() constructor

Limited availability

This feature is not Baseline because it does not work in some of the most widely-used browsers.

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

Note: This feature is available in Dedicated Web Workers.

The AudioDecoder() constructor creates a new AudioDecoder object with the provided init.output callback assigned as the output callback, the provided init.error callback as the error callback, and the AudioDecoder.state set to "unconfigured".

Syntax

js
new AudioDecoder(init)

Parameters

init

A dictionary object containing two required callbacks.

output

A callback which is passed a single argument of an AudioData object.

error

A callback which is passed a single argument of the error that has been thrown.

Examples

In the following example an AudioDecoder is created with the two required callback functions, one to deal with the decoded chunk and the other to handle errors.

js
const audioDecoder = new AudioDecoder({
  output: processAudio,
  error: onEncoderError,
});

Specifications

Specification
WebCodecs
# audiodecoder

Browser compatibility

desktop mobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
AudioDecoder() constructor
Chrome – Full support
Chrome 94 (Release date: 2021-09-21)
footnote Full support
Edge – Full support
Edge 94 (Release date: 2021-09-24)
footnote Full support
Firefox – Full support
Firefox 130 (Release date: 2024-09-03)
footnote Full support
Opera – Full support
Opera 80 (Release date: 2021-10-05)
footnote Full support
Safari – Full support
Safari 26 (Release date: 2025-09-15)
footnote Full support
Chrome Android – Full support
Chrome Android 94 (Release date: 2021-09-21)
footnote Full support
Firefox for Android – No support
Firefox for Android
footnote No support
Opera Android – Full support
Opera Android 66 (Release date: 2021-12-15)
footnote Full support
Safari on iOS – Full support
Safari on iOS 26 (Release date: 2025-09-15)
footnote Full support
Samsung Internet – Full support
Samsung Internet 17 (Release date: 2022-05-04)
footnote Full support
WebView Android – Full support
WebView Android 94 (Release date: 2021-09-21)
footnote Full support
WebView on iOS – Full support
WebView on iOS 26 (Release date: 2025-09-15)
footnote Full support

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
No support
No support