DynamicsCompressorNode.threshold

The threshold property of the DynamicsCompressorNode interface is a k-rate AudioParam representing the decibel value above which the compression will start taking effect.

The threshold property's default value is -24 and it can be set between -100 and 0.

The threshold attribute has no effect on signals lowers than its value, but induce volume reduction on signal stronger than its value.

Syntax

var audioCtx = new AudioContext();
var compressor = audioCtx.createDynamicsCompressor();
compressor.threshold.value = -50;

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.threshold.value = -50;

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

Specifications

Specification
Web Audio API # dom-dynamicscompressornode-threshold

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