Definition
Web Audio API defines AudioBuffer
[Exposed=Window]
interface AudioBuffer {
constructor (AudioBufferOptions options);
readonly attribute float sampleRate;
readonly attribute unsigned long length;
readonly attribute double duration;
readonly attribute unsigned long numberOfChannels;
Float32Array getChannelData (unsigned long channel);
undefined copyFromChannel (Float32Array destination,
unsigned long channelNumber,
optional unsigned long bufferOffset = 0);
undefined copyToChannel (Float32Array source,
unsigned long channelNumber,
optional unsigned long bufferOffset = 0);
};