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.
An AudioParam.
Note: Though the AudioParam returned is read-only, the value it represents is not.
js
const audioCtx = new AudioContext();
const compressor = audioCtx.createDynamicsCompressor();
compressor.ratio.value = 12;
See BaseAudioContext.createDynamicsCompressor() for more complete example code.
| Specification |
|---|
| Web Audio API # dom-dynamicscompressornode-ratio |
| 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 |
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https://developer.mozilla.org/en-US/docs/Web/API/DynamicsCompressorNode/ratio