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.

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. Alternatively, you can use the BaseAudioContext.createDelay() factory method.


Inherits properties from its parent, AudioNode.

DelayNode.delayTime Read only
Is an a-rate AudioParam representing the amount of delay to apply.


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



Specification Status Comment
Web Audio API
The definition of 'DelayNode' in that specification.
Working Draft  

Browser compatibility

FeatureChromeEdgeFirefoxInternet ExplorerOperaSafari
Basic support14 Yes25 No156
DelayNode() constructor551 ?53 No42 ?
delayTime14 Yes25 No156
FeatureAndroid webviewChrome for AndroidEdge mobileFirefox for AndroidIE mobileOpera AndroidiOS Safari
Basic support1414 Yes26 No15 ?
DelayNode() constructor551551 ?53 No42 ?
delayTime Yes14 Yes26 No15 ?

1. Before version 59, the default values were not supported.

See also

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