AudioData: format property

Limited availability

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

Note: This feature is available in Dedicated Web Workers.

The format read-only property of the AudioData interface returns the sample format of the AudioData object.

Value

A string. One of:

"u8"

8-bit unsigned integer samples, in an interleaved format.

"s16"

16-bit signed integer samples, in an interleaved format.

"s32"

32-bit signed integer samples, in an interleaved format.

"f32"

32-bit float samples, in an interleaved format.

"u8-planar"

8-bit unsigned integer samples, in a planar format.

"s16-planar"

16-bit signed integer samples, in a planar format.

"s32-planar"

32-bit signed integer samples, in a planar format.

"f32-planar"

32-bit float samples, in a planar format.

Examples

The below example prints the value of format to the console.

js
console.log(AudioData.format);

Specifications

Specification
WebCodecs
# dom-audiodata-format

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
format
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