README
audio-buffer
Basic audio data container. Provides lightweight Web Audio API AudioBuffer implementation. Useful instead of Buffer in audio streams, @audiojs components and other audio applications. Can be used as a ponyfill.
Usage
new AudioBuffer(context?, options)
Create audio buffer for audio context
based on options
.
Default context
is audio-context singleton. null
context can be used to indicate context-free buffer instance, eg. in nodejs.
Available options:
length
— number of samples, minimum is 1.sampleRate
— default sample rate is 44100.numberOfChannels
— default number of channels is 1.
buffer.duration
Duration of the underlying audio data, in seconds.
buffer.length
Number of samples per channel.
buffer.sampleRate
Default sample rate is 44100.
buffer.numberOfChannels
Default number of channels is 1.
buffer.getChannelData(channel)
Get array containing the data for the channel (not copied).
buffer.copyFromChannel(destination, channelNumber, startInChannel=0)
Place data from channel to destination Float32Array.
buffer.copyToChannel(source, channelNumber, startInChannel=0)
Place data from source Float32Array to the channel.
See also
- audio-buffer-list — linked sequence of audio buffers, useful for storing/manipulating large audio data.
- audio-buffer-utils — utils for audio buffers.
- pcm-util — utils for audio format convertions.