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DynamicsCompressorNode: ratio property

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

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.ratio.value = 12;

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

Specifications

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 19 12 25 No 15 6 ≤37 25 25 14 6 1.5

See also

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https://developer.mozilla.org/en-US/docs/Web/API/DynamicsCompressorNode/ratio