DynamicsCompressorNode.attack

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.

Syntax

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

Value

An AudioParam.

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

Example

var audioCtx = new AudioContext();
var 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

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`attack`	14	12	25	No	15	6	≤37	18	25	14	Yes	1.0