AudioNode: channelCountMode 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 channelCountMode property of the AudioNode interface represents an enumerated value describing the way channels must be matched between the node's inputs and outputs.
Value
The possible values of the channelCountMode enumerated value, and their meanings are:
max-
The number of channels is equal to the maximum number of channels of all connections. In this case,
channelCountis ignored and only up-mixing happens.The following AudioNode children default to this value:
GainNode,DelayNode,ScriptProcessorNode,BiquadFilterNode,WaveShaperNode. clamped-max-
The number of channels is equal to the maximum number of channels of all connections, clamped to the value of
channelCount.The following AudioNode children default to this value:
PannerNode,ConvolverNode,DynamicsCompressorNode explicit-
The number of channels is defined by the value of
channelCount.The following AudioNode children default to this value:
AudioDestinationNode,AnalyserNode,ChannelSplitterNode,ChannelMergerNode
Note:
In older versions of the spec, the default for a ChannelSplitterNode was max.
Examples
const audioCtx = new AudioContext();
const oscillator = audioCtx.createOscillator();
const gainNode = audioCtx.createGain();
oscillator.connect(gainNode);
gainNode.connect(audioCtx.destination);
oscillator.channelCountMode = "explicit";
Specifications
| Specification |
|---|
| Web Audio API # dom-audionode-channelcountmode |
Browser compatibility
| desktop | mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
channelCountMode
|
|
|
|
|
|
|
|
|
|
|
|
|
Legend
Tip: you can click/tap on a cell for more information.
- Full support
- Full support