DynamicsCompressorNode.ratio

The ratio property of the DynamicsCompressorNode interface Is a k-rate AudioParam representing the amount of change, in dB, needed in the input for a 1 dB change in the output.

The ratio property's default value is 12 and it can be set between 1 and 20.

Describes the effect of different ratio on the output signal

Syntax

var audioCtx = new AudioContext();
var compressor = audioCtx.createDynamicsCompressor();
compressor.ratio.value = 12;

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.ratio.value = 12;

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

Specifications

Specification
Web Audio API # dom-dynamicscompressornode-ratio

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