GainNode() | Web API

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GainNode() constructor of the Web 音频 API creates a new GainNode object which an AudioNode that represents a change in volume.

注意 : You should typically call AudioContext.createGain() to create a gain node.

var gainNode = new GainNode(context, options)

Inherits parameters from the AudioNodeOptions dictionary .

context

A reference to an


									AudioContext

选项 可选

Options are as follows:

gain : The amount of gain to apply. This parameter is a-rate and it's nominal range is (-∞,+∞). The default is 1 .

新的 GainNode 对象实例。

规范	状态	注释
Web 音频 API The definition of 'GainNode()' in that specification.	工作草案	初始定义。

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. 更新 GitHub 上的兼容性数据

	桌面						移动
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`GainNode()` 构造函数	Chrome 55	Edge ≤79	Firefox 53	IE 不支持 No	Opera 42	Safari ?	WebView Android 55 注意事项 55 注意事项 Before Chrome 59, the default values were not supported.	Chrome Android 55 注意事项 55 注意事项 Before Chrome 59, the default values were not supported.	Firefox Android 53	Opera Android 42	Safari iOS ?	Samsung Internet Android 6.0 注意事项 6.0 注意事项 Before Samsung Internet 7.0, the default values were not supported.