AudioBuffer class abstract
The AudioBuffer represents a short audio asset residing in
memory, created from an audio file using the
BaseAudioContext.decodeAudioData method, or from raw data using
BaseAudioContext.createBuffer. Once put into an AudioBuffer, the audio can
then be played by being passed into an AudioBufferSourceNode.
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 the
audio signal waveform encoded as a series of amplitudes in the following
format: non-interleaved IEEE754 32-bit linear PCM with a nominal range
between -1 and +1, that is, a 32-bit floating point buffer, with each
sample between -1.0 and 1.0. If the AudioBuffer has multiple channels,
they are stored in separate buffers.
API documentation sourced from MDN Web Docs.
Constructors
Properties
- duration → double
-
The
durationproperty of the AudioBuffer returns a double representing the duration, in seconds, of the PCM data stored in the buffer.no setter - hashCode → int
-
The hash code for this object.
no setterinherited
- length → int
-
The
lengthproperty of the AudioBuffer returns an integer representing the length, in sample-frames, of the PCM data stored in the buffer.no setter - numberOfChannels → int
-
The
numberOfChannelsproperty of the AudioBuffer returns an integer representing the number of discrete audio channels described by the PCM data stored in the buffer.no setter - runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
- sampleRate → TauSampleRate
-
The
sampleRateproperty of the AudioBuffer returns a float representing the sample rate, in samples per second, of the PCM data stored in the buffer.no setter
Methods
-
copyFromChannel(
TauFloat32Array destination, int channelNumber, [int bufferOffset]) → void -
The
copyFromChannel()method of the AudioBuffer copies the audio sample data from the specified channel of theAudioBufferto a specifiedFloat32Array. -
copyToChannel(
TauFloat32Array source, int channelNumber, [int bufferOffset]) → void -
The
copyToChannel()method of the AudioBuffer copies the samples to the specified channel of theAudioBuffer, from the source array. -
getChannelData(
int channel) → TauFloat32Array -
The
getChannelData()method of the AudioBuffer returns aFloat32Arraycontaining the PCM data associated with the channel, defined by the channel parameter (with 0 representing the first channel). -
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited