AudioContext class

The interface represents an audio-processing graph built from audio modules linked together, each represented by an AudioNode. An audio context controls both the creation of the nodes it contains and the execution of the audio processing, or decoding. You need to create an before you do anything else, as everything happens inside a context. It's recommended to create one AudioContext and reuse it instead of initializing a new one each time, and it's OK to use a single for several different audio sources and pipeline concurrently.

EventTarget

BaseAudioContext

AudioContext

Implemented types
Available extensions
Annotations
  • @JS()
  • @staticInterop

Constructors

AudioContext([AudioContextOptions? contextOptions])
factory

Properties

audioWorklet → AudioWorklet

Available on BaseAudioContext, provided by the PropsBaseAudioContext extension

no setter
baseLatency → double

Available on AudioContext, provided by the PropsAudioContext extension

no setter
currentTime → double

Available on BaseAudioContext, provided by the PropsBaseAudioContext extension

no setter
destination → AudioDestinationNode

Available on BaseAudioContext, provided by the PropsBaseAudioContext extension

no setter
hashCode → int
The hash code for this object.
no setterinherited
listener → AudioListener

Available on BaseAudioContext, provided by the PropsBaseAudioContext extension

no setter
onstatechange ↔ EventHandlerNonNull<Event>?

Available on BaseAudioContext, provided by the PropsBaseAudioContext extension

getter/setter pair
outputLatency → double

Available on AudioContext, provided by the PropsAudioContext extension

no setter
renderCapacity → AudioRenderCapacity

Available on AudioContext, provided by the PropsAudioContext extension

no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
sampleRate → double

Available on BaseAudioContext, provided by the PropsBaseAudioContext extension

no setter
state → AudioContextState

Available on BaseAudioContext, provided by the PropsBaseAudioContext extension

no setter

Methods

addEventListener(String type, EventListener? callback, [dynamic options]) → void

Available on EventTarget, provided by the PropsEventTarget extension

close() → Future<void>

Available on AudioContext, provided by the PropsAudioContext extension

createAnalyser() → AnalyserNode

Available on BaseAudioContext, provided by the PropsBaseAudioContext extension

createBiquadFilter() → BiquadFilterNode

Available on BaseAudioContext, provided by the PropsBaseAudioContext extension

createBuffer(int numberOfChannels, int length, double sampleRate) → AudioBuffer

Available on BaseAudioContext, provided by the PropsBaseAudioContext extension

createBufferSource() → AudioBufferSourceNode

Available on BaseAudioContext, provided by the PropsBaseAudioContext extension

createChannelMerger([int? numberOfInputs = 6]) → ChannelMergerNode

Available on BaseAudioContext, provided by the PropsBaseAudioContext extension

createChannelSplitter([int? numberOfOutputs = 6]) → ChannelSplitterNode

Available on BaseAudioContext, provided by the PropsBaseAudioContext extension

createConstantSource() → ConstantSourceNode

Available on BaseAudioContext, provided by the PropsBaseAudioContext extension

createConvolver() → ConvolverNode

Available on BaseAudioContext, provided by the PropsBaseAudioContext extension

createDelay([double? maxDelayTime = 1.0]) → DelayNode

Available on BaseAudioContext, provided by the PropsBaseAudioContext extension

createDynamicsCompressor() → DynamicsCompressorNode

Available on BaseAudioContext, provided by the PropsBaseAudioContext extension

createGain() → GainNode

Available on BaseAudioContext, provided by the PropsBaseAudioContext extension

createIIRFilter(Iterable<double> feedforward, Iterable<double> feedback) → IIRFilterNode

Available on BaseAudioContext, provided by the PropsBaseAudioContext extension

createMediaElementSource(HTMLMediaElement mediaElement) → MediaElementAudioSourceNode

Available on AudioContext, provided by the PropsAudioContext extension

createMediaStreamDestination() → MediaStreamAudioDestinationNode

Available on AudioContext, provided by the PropsAudioContext extension

createMediaStreamSource(MediaStream mediaStream) → MediaStreamAudioSourceNode

Available on AudioContext, provided by the PropsAudioContext extension

createMediaStreamTrackSource(MediaStreamTrack mediaStreamTrack) → MediaStreamTrackAudioSourceNode

Available on AudioContext, provided by the PropsAudioContext extension

createOscillator() → OscillatorNode

Available on BaseAudioContext, provided by the PropsBaseAudioContext extension

createPanner() → PannerNode

Available on BaseAudioContext, provided by the PropsBaseAudioContext extension

createPeriodicWave(Iterable<double> real, Iterable<double> imag, [PeriodicWaveConstraints? constraints]) → PeriodicWave

Available on BaseAudioContext, provided by the PropsBaseAudioContext extension

createScriptProcessor([int? bufferSize = 0, int? numberOfInputChannels = 2, int? numberOfOutputChannels = 2]) → ScriptProcessorNode

Available on BaseAudioContext, provided by the PropsBaseAudioContext extension

createStereoPanner() → StereoPannerNode

Available on BaseAudioContext, provided by the PropsBaseAudioContext extension

createWaveShaper() → WaveShaperNode

Available on BaseAudioContext, provided by the PropsBaseAudioContext extension

decodeAudioData(ByteBuffer audioData, [DecodeSuccessCallback? successCallback, DecodeErrorCallback? errorCallback]) → Future<AudioBuffer>

Available on BaseAudioContext, provided by the PropsBaseAudioContext extension

dispatchEvent(Event event) → bool

Available on EventTarget, provided by the PropsEventTarget extension

getOutputTimestamp() → AudioTimestamp

Available on AudioContext, provided by the PropsAudioContext extension

noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
removeEventListener(String type, EventListener? callback, [dynamic options]) → void

Available on EventTarget, provided by the PropsEventTarget extension

resume() → Future<void>

Available on AudioContext, provided by the PropsAudioContext extension

suspend() → Future<void>

Available on AudioContext, provided by the PropsAudioContext extension

toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited