Objects of these types are designed to hold small audio snippets, typically less than 45 s. For longer sounds, objects implementing the MediaElementAudioSourceNode are more suitable. The buffer contains data in the following format: non-interleaved IEEE754 32-bit linear PCM with a nominal range between -1 and +1, that is, 32bits floating point buffer, with each samples between -1.0 and 1.0. If the AudioBuffer has multiple channels, they are stored in separate buffer.
Documentation AudioBuffer by Mozilla Contributors, licensed under CC-BY-SA 2.5.
See also:
Constructor
Variables
read onlyduration:Float
Returns a double representing the duration, in seconds, of the PCM data stored in the buffer.
read onlylength:Int
Returns an integer representing the length, in sample-frames, of the PCM data stored in the buffer.
read onlynumberOfChannels:Int
Returns an integer representing the number of discrete audio channels described by the PCM data stored in the buffer.
read onlysampleRate:Float
Returns a float representing the sample rate, in samples per second, of the PCM data stored in the buffer.
Methods
copyFromChannel(destination:Float32Array, channelNumber:Int, startInChannel:Int = 0):Void
Copies the samples from the specified channel of the AudioBuffer to the destination array.
Throws:
null | DOMError |
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copyToChannel(source:Float32Array, channelNumber:Int, startInChannel:Int = 0):Void
Copies the samples to the specified channel of the AudioBuffer, from the source array.
Throws:
null | DOMError |
|---|
getChannelData(channel:Int):Float32Array
Returns a Float32Array containing the PCM data associated with the channel, defined by the channel parameter (with 0 representing the first channel).
Throws:
null | DOMError |
|---|