Web/API/AudioBuffer/AudioBuffer

The AudioBuffer constructor of the Web Audio API creates a new AudioBuffer object.

Syntax

var audioBuffer = new AudioBuffer(options);

Inherits parameters from the AudioNodeOptions dictionary.

length

The size of the audio buffer in sample-frames. To determine the length to use for a specific number of seconds of audio, use numSeconds * sampleRate.
numberOfChannels: The number of channels for the buffer. The default is 1, and all user agents are required to support at least 32 channels.
sampleRate: The sample rate in Hz for the buffer. The default is the sample rate of the context used in constructing this object. User agents are required to support sample rates from 8,000 Hz to 96,000 Hz (but are allowed to go farther outside this range).

context ': A reference to an AudioContext. This parameter was removed from the spec.

A new AudioBuffer object instance.

NotSupportedError: One or more of the options are negative or otherwise has an invalid value (such as numberOfChannels being higher than supported, or a sampleRate outside the nominal range).
RangeError: There isn't enough memory available to allocate the buffer.

Specification	Status	Comment
Web Audio APIThe definition of 'AudioBuffer' in that specification.	Working Draft	Initial definition.

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	Android webview	Chrome for Android	Firefox for Android	Opera for Android	Safari on iOS	Samsung Internet
`AudioBuffer()` constructor	Chrome Full support 55 Notes' Full support 55 Notes' Notes' The `context` parameter was supported up until version 57, but has now been removed.	Edge Full support 79	Firefox Full support 53	IE No support No	Opera Full support 42 Notes' Full support 42 Notes' Notes' The `context` parameter was supported up until version 44, but has now been removed.	Safari No support No	WebView Android Full support 55 Notes' Full support 55 Notes' Notes' The `context` parameter was supported up until version 57, but has now been removed.	Chrome Android Full support 55 Notes' Full support 55 Notes' Notes' The `context` parameter was supported up until version 57, but has now been removed.	Firefox Android Full support 53	Opera Android Full support 42 Notes' Full support 42 Notes' Notes' The `context` parameter was supported up until version 44, but has now been removed.	Safari iOS No support No	Samsung Internet Android Full support 6.0 Notes' Full support 6.0 Notes' Notes' The `context` parameter was supported up until Samsung Internet 7.0, but has now been removed.