The GainNode() constructor of the Web Audio API creates a new GainNode object which an AudioNode that represents a change in volume.
Note: You should typically call AudioContext.createGain() to create a gain node.
Syntax
var gainNode = new GainNode(context, options)
Parameters
Inherits parameters from the AudioNodeOptions dictionary.
context- A reference to an
AudioContext. optionsOptional- Options are as follows:
gain: The amount of gain to apply. This parameter is a-rate and it's nominal range is (-∞,+∞). The default is1.
Return value
A new GainNode object instance.
Specifications
| Specification | Status | Comment |
|---|---|---|
| Web Audio API The definition of 'GainNode()' in that specification. |
Working Draft | Initial definition. |
Browser Compatibility
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | 551 | ? | 53 | No | 42 | ? |
| Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | Opera Android | iOS Safari | Samsung Internet |
|---|---|---|---|---|---|---|---|
| Basic support | 551 | 551 | ? | 53 | 42 | ? | 6.0 |
1. Before Chrome 59, the default values were not supported.