/Web APIs

AudioData: allocationSize() method

Experimental: This is an experimental technology
Check the Browser compatibility table carefully before using this in production.

The allocationSize() method of the AudioData interface returns the size in bytes required to hold the current sample as filtered by options passed into the method.





An object containing the following:


The index of the plane to return the size of.

frameOffset Optional

An integer giving an offset into the plane data indicating which plane to begin from. Defaults to 0.

frameCount Optional

An integer giving the number of frames to return the size of. If omitted then all frames in the plane will be used, beginning with the frame specified in frameOffset.

Return value

An integer containing the number of bytes needed to hold the samples described by options.


The following example gets the size of the plane at index 1.

let size = AudioData.allocationSize({ planeIndex: 1 });


Browser compatibility

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allocationSize 94 94 No No 80 No 94 94 No 66 No 17.0

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