W3cubDocs

/Web APIs

AudioNode: channelCount property

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since ⁨July 2015⁩.

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.

Value

An integer.

Examples

const audioCtx = new AudioContext();

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

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

oscillator.channelCount;

Specifications

Specification
Web Audio API>
# dom-audionode-channelcount>

Browser compatibility

Desktop Mobile
Chrome Edge Firefox Opera Safari Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet WebView Android WebView on iOS
channelCount 27 12 25 15 7 27 25 15 7 1.5 4.4 7

See also

© 2005–2025 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/AudioNode/channelCount