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DynamicsCompressorNode: threshold property

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.

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.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 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/threshold