/Web APIs


The DelayNode interface represents a delay-line; an AudioNode audio-processing module that causes a delay between the arrival of an input data and its propagation to the output.

A DelayNode always has exactly one input and one output, both with the same amount of channels.

The DelayNode acts as a delay-line, here with a value of 1s.

When creating a graph that has a cycle, it is mandatory to have at least one DelayNode in the cycle, or the nodes taking part in the cycle will be muted.

EventTarget AudioNode DelayNode
Number of inputs 1
Number of outputs 1
Channel count mode "max"
Channel count 2 (not used in the default count mode)
Channel interpretation "speakers"



Creates a new instance of an DelayNode object instance. As an alternative, you can use the BaseAudioContext.createDelay() factory method; see Creating an AudioNode.

Instance properties

Inherits properties from its parent, AudioNode.

DelayNode.delayTime Read only

An a-rate AudioParam representing the amount of delay to apply, specified in seconds.

Instance methods

No specific methods; inherits methods from its parent, AudioNode.


See BaseAudioContext.createDelay() for example code.


Browser compatibility

Desktop Mobile
Chrome Edge Firefox Internet Explorer Opera Safari WebView Android Chrome Android Firefox for Android Opera Android Safari on IOS Samsung Internet
DelayNode 55 79 53 No 42 14.1 55 55 53 42 14.5 6.0
DelayNode 24 12 25 No 15 7 ≤37 25 25 14 7 1.5
delayTime 24 12 25 No 15 7 ≤37 25 25 14 7 1.5

See also

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