DynamicsCompressorNode: attack property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2021.

The attack property of the DynamicsCompressorNode interface is a k-rate AudioParam representing the amount of time, in seconds, required to reduce the gain by 10 dB. It defines how quickly the signal is adapted when its volume is increased.

The attack property's default value is 0.003 and it can be set between 0 and 1.

Value

An AudioParam.

Note: Though the AudioParam returned is read-only, the value it represents is not.

Examples

js
const audioCtx = new AudioContext();
const compressor = audioCtx.createDynamicsCompressor();
compressor.attack.value = 0;

See BaseAudioContext.createDynamicsCompressor() for more complete example code.

Specifications

Specification
Web Audio API
# dom-dynamicscompressornode-attack

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
attack

Legend

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

Full support
Full support

See also