AudioDestinationNode

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 maxChannelCount value or an exception is raised.

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

Number of inputs 1
Number of outputs 0
Channel count mode "explicit"
Channel count 2
Channel interpretation "speakers"

特性

Inherits properties from its parent, AudioNode .

AudioDestinationNode.maxChannelCount
Is an 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 Comment
Web 音频 API
The definition of 'AudioDestinationNode' in that specification.
工作草案

浏览器兼容性

更新 GitHub 上的兼容性数据
Desktop Mobile
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
完整支持
不支持
不支持

另请参阅