AudioDestinationNode

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AudioDestinationNode interface represents the end destination of an audio graph in a given context — usually the speakers of your device. It can also be the node that will "record" the audio data when used with an OfflineAudioContext .

AudioDestinationNode has no output (as it is the output, no more AudioNode can be linked after it in the audio graph) and one input. The number of channels in the input must be between 0 和 maxChannelCount value or an exception is raised.

AudioDestinationNode of a given AudioContext can be retrieved using the AudioContext.destination 特性。

输入数	`1`
输出数	`0`
通道计数模式	`"explicit"`
通道计数	`2`
通道解释	`"speakers"`

特性

继承的特性来自其父级， AudioNode .

AudioDestinationNode.maxChannelCount: 是 unsigned long defining the maximum number of channels that the physical device can handle.

方法

No specific method; inherits methods from its parent, AudioNode .

范例

There is no complex set up for using an AudioDestinationNode — by default, this simply represents the output of the user's system (e.g. their speakers), so you can get it hooked up inside an audio graph using only a few lines of code:

var audioCtx = new AudioContext();
var source = audioCtx.createMediaElementSource(myMediaElement);
source.connect(gainNode);
gainNode.connect(audioCtx.destination);

To see a more complete implementation, check out one of our MDN Web Audio examples, such as Voice-change-o-matic or Violent Theremin .

规范

规范	状态	注释
Web 音频 API The definition of 'AudioDestinationNode' in that specification.	工作草案

浏览器兼容性

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
`AudioDestinationNode`	Chrome 14	Edge ≤18	Firefox 25	IE 不支持 No	Opera 15	Safari 6	WebView Android Yes	Chrome Android 18	Firefox Android 26	Opera Android 14	Safari iOS Yes	Samsung Internet Android 1.0
`maxChannelCount`	Chrome 14	Edge 12	Firefox 25	IE 不支持 No	Opera 15	Safari 6	WebView Android Yes	Chrome Android 18	Firefox Android 26	Opera Android 14	Safari iOS Yes	Samsung Internet Android 1.0

图例

完整支持
不支持

另请参阅

使用 Web 音频 API

元数据

最后修改： Jun 14, 2020

在此页

特性

方法

范例

规范

浏览器兼容性

图例

另请参阅

相关话题