AudioNode.channelCount - Web APIs 编辑

The channelCount property of the AudioNode interface represents an integer used to determine how many channels are used when up-mixing and down-mixing connections to any inputs to the node.

channelCount's usage and precise definition depend on the value of AudioNode.channelCountMode:

• It is ignored if the channelCountMode value is max.
• It is used as a maximum value if the channelCountMode value is clamped-max.
• It is used as the exact value if the channelCountMode value is explicit.

Syntax

var oscillator = audioCtx.createOscillator();
var channels = oscillator.channelCount;

Value

An integer.

Example

var AudioContext = window.AudioContext || window.webkitAudioContext;

var audioCtx = new AudioContext();

var oscillator = audioCtx.createOscillator();
var gainNode = audioCtx.createGain();

oscillator.connect(gainNode);
gainNode.connect(audioCtx.destination);

oscillator.channelCount;

Specifications

Browser compatibility

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See also

• Using the Web Audio API