AudioDestinationNode.maxChannelCount

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2021.

AudioDestinationNode 接口的 maxchannelCount 属性是一个表示物理设备能处理最大通道数的无符号长整型数。

AudioNode.channelCount 属性值只能在 0 和这个值 (两端包含) 之间。如果 maxChannelCount0,例如在 OfflineAudioContext, 表示音频通道不能被改变。

语法

js
var audioCtx = new AudioContext();
var myDestination = audioCtx.destination;
myDestination.maxChannelCount = 2;

一个无符号长整型数

例子

下面假设了一个简单的音频环境,设置其中 AudioDestinationNodemaxChannelCount 值为 2:

js
var audioCtx = new AudioContext();
var source = audioCtx.createMediaElementSource(myMediaElement);
source.connect(gainNode);
audioCtx.destination.maxChannelCount = 2;
gainNode.connect(audioCtx.destination);

为看到一个更完整的实施,请访问我们的 MDN Web Audio 例子,如 Voice-change-o-matic 或者 Violent Theremin.

规范

Specification
Web Audio API
# dom-audiodestinationnode-maxchannelcount

浏览器兼容性

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
maxChannelCount

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support
Partial support
Partial support
Has more compatibility info.

其他