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The value property of the AudioParam interface represents the parameter's current floating point value, which is initially set to the value of AudioParam.defaultValue.

 Though value can be set, any modifications happening while there are automation events scheduled — that is, events scheduled using the methods of the AudioParam — are ignored, without raising any exception.


var gainNode = audioCtx.createGain();
gainNode.gain.value = 0; //'gain' is the AudioParam


A float.


var AudioContext = window.AudioContext || window.webkitAudioContext;
var audioCtx = new AudioContext();

var gainNode = audioCtx.createGain();
gainNode.gain.value = 0;


Specification Status Comment
Web Audio API
The definition of 'value' in that specification.
Working Draft  

Browser compatibility

Feature Chrome Edge Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 14 webkit (Yes) 23 No support 15 webkit
22 (unprefixed)
6 webkit
Feature Android Chrome Edge Firefox Mobile (Gecko) Firefox OS IE Phone Opera Mobile Safari Mobile
Basic support No support 28 webkit (Yes) 25 1.2 No support No support webkit

See also

Document Tags and Contributors

 Contributors to this page: erikadoyle, fscholz, chrisdavidmills
 Last updated by: erikadoyle,