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AudioDestinationNode.maxChannelCount

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

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 AudioDestinationNode的maxChannelCount值为 2:

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 Status Comment
Web Audio API
maxChannelCount
Working Draft  

浏览器兼容

We're converting our compatibility data into a machine-readable JSON format. This compatibility table still uses the old format, because we haven't yet converted the data it contains. Find out how you can help!

Feature Chrome Firefox (Gecko) Internet Explorer Opera Safari (WebKit)
Basic support 10.0webkit 25.0 (25.0)  未实现 15.0webkit
22 (unprefixed)
6.0webkit
Feature Android Firefox Mobile (Gecko) Firefox OS IE Mobile Opera Mobile Safari Mobile Chrome for Android
Basic support ? 26.0 1.2 ? ? ? 33.0

其他

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