DynamicsCompressorNode.knee

The knee property of the DynamicsCompressorNode interface is a k-rate AudioParam containing a decibel value representing the range above the threshold where the curve smoothly transitions to the compressed portion.

The knee property's default value is 30 and it can be set between 0 and 40.

Describes the effect of a knee, showing two curves one for a hard knee, the other for a soft knee.

Syntax

var audioCtx = new AudioContext();
var compressor = audioCtx.createDynamicsCompressor();
compressor.knee.value = 40;

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.knee.value = 40;

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

Specifications

Specification
Web Audio API # dom-dynamicscompressornode-knee

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
`knee`	14	12	25	No	15	6	≤37	18	25	14	Yes	1.0