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Experimental WebAPI

AudioContext

Values

addEventListener

Appends an event listener for events whose type attribute value is type. The callback argument sets the callback that will be invoked when the event is dispatched.

The options argument sets listener-specific options. For compatibility this can be a boolean, in which case the method behaves exactly as if the value was specified as options's capture.

When set to true, options's capture prevents callback from being invoked when the event's eventPhase attribute value is BUBBLING_PHASE. When false (or not present), callback will not be invoked when event's eventPhase attribute value is CAPTURING_PHASE. Either way, callback will be invoked if event's eventPhase attribute value is AT_TARGET.

When set to true, options's passive indicates that the callback will not cancel the event by invoking preventDefault(). This is used to enable performance optimizations described in § 2.8 Observing event listeners.

When set to true, options's once indicates that the callback will only be invoked once after which the event listener will be removed.

If an AbortSignal is passed for options's signal, then the event listener will be removed when signal is aborted.

The event listener is appended to target's event listener list and is not appended if it has the same type, callback, and capture. Read more on MDN

let addEventListener: (
  WebAPI.WebAudioAPI.audioContext,
  ~type_: WebAPI.EventAPI.eventType,
  ~callback: WebAPI.EventAPI.eventListener<'event>,
  ~options: WebAPI.EventAPI.addEventListenerOptions=?,
) => unit

Parameters

WebAPI.WebAudioAPI.audioContext WebAPI.EventAPI.eventType WebAPI.EventAPI.eventListener option< WebAPI.EventAPI.addEventListenerOptions >

Return type

unit

addEventListener_useCapture

Appends an event listener for events whose type attribute value is type. The callback argument sets the callback that will be invoked when the event is dispatched.

The options argument sets listener-specific options. For compatibility this can be a boolean, in which case the method behaves exactly as if the value was specified as options's capture.

When set to true, options's capture prevents callback from being invoked when the event's eventPhase attribute value is BUBBLING_PHASE. When false (or not present), callback will not be invoked when event's eventPhase attribute value is CAPTURING_PHASE. Either way, callback will be invoked if event's eventPhase attribute value is AT_TARGET.

When set to true, options's passive indicates that the callback will not cancel the event by invoking preventDefault(). This is used to enable performance optimizations described in § 2.8 Observing event listeners.

When set to true, options's once indicates that the callback will only be invoked once after which the event listener will be removed.

If an AbortSignal is passed for options's signal, then the event listener will be removed when signal is aborted.

The event listener is appended to target's event listener list and is not appended if it has the same type, callback, and capture. Read more on MDN

let addEventListener_useCapture: (
  WebAPI.WebAudioAPI.audioContext,
  ~type_: WebAPI.EventAPI.eventType,
  ~callback: WebAPI.EventAPI.eventListener<'event>,
) => unit

Parameters

WebAPI.WebAudioAPI.audioContext WebAPI.EventAPI.eventType WebAPI.EventAPI.eventListener

Return type

unit

asBaseAudioContext

let asBaseAudioContext: WebAPI.WebAudioAPI.audioContext => WebAPI.WebAudioAPI.baseAudioContext

Parameters

WebAPI.WebAudioAPI.audioContext

Return type

WebAPI.WebAudioAPI.baseAudioContext

asEventTarget

let asEventTarget: WebAPI.WebAudioAPI.audioContext => WebAPI.EventAPI.eventTarget

Parameters

WebAPI.WebAudioAPI.audioContext

Return type

WebAPI.EventAPI.eventTarget

close

Read more on MDN

let close: WebAPI.WebAudioAPI.audioContext => Promise.t<unit>

Parameters

WebAPI.WebAudioAPI.audioContext

Return type

Promise.t< unit >

createAnalyser

Read more on MDN

let createAnalyser: WebAPI.WebAudioAPI.audioContext => WebAPI.WebAudioAPI.analyserNode

Parameters

WebAPI.WebAudioAPI.audioContext

Return type

WebAPI.WebAudioAPI.analyserNode

createBiquadFilter

Read more on MDN

let createBiquadFilter: WebAPI.WebAudioAPI.audioContext => WebAPI.WebAudioAPI.biquadFilterNode

Parameters

WebAPI.WebAudioAPI.audioContext

Return type

WebAPI.WebAudioAPI.biquadFilterNode

createBuffer

Read more on MDN

let createBuffer: (
  WebAPI.WebAudioAPI.audioContext,
  ~numberOfChannels: int,
  ~length: int,
  ~sampleRate: float,
) => WebAPI.WebAudioAPI.audioBuffer

Parameters

WebAPI.WebAudioAPI.audioContext int int float

Return type

WebAPI.WebAudioAPI.audioBuffer

createBufferSource

Read more on MDN

let createBufferSource: WebAPI.WebAudioAPI.audioContext => WebAPI.WebAudioAPI.audioBufferSourceNode

Parameters

WebAPI.WebAudioAPI.audioContext

Return type

WebAPI.WebAudioAPI.audioBufferSourceNode

createChannelMerger

Read more on MDN

let createChannelMerger: (
  WebAPI.WebAudioAPI.audioContext,
  ~numberOfInputs: int=?,
) => WebAPI.WebAudioAPI.channelMergerNode

Parameters

WebAPI.WebAudioAPI.audioContext option< int >

Return type

WebAPI.WebAudioAPI.channelMergerNode

createChannelSplitter

Read more on MDN

let createChannelSplitter: (
  WebAPI.WebAudioAPI.audioContext,
  ~numberOfOutputs: int=?,
) => WebAPI.WebAudioAPI.channelSplitterNode

Parameters

WebAPI.WebAudioAPI.audioContext option< int >

Return type

WebAPI.WebAudioAPI.channelSplitterNode

createConstantSource

Read more on MDN

let createConstantSource: WebAPI.WebAudioAPI.audioContext => WebAPI.WebAudioAPI.constantSourceNode

Parameters

WebAPI.WebAudioAPI.audioContext

Return type

WebAPI.WebAudioAPI.constantSourceNode

createConvolver

Read more on MDN

let createConvolver: WebAPI.WebAudioAPI.audioContext => WebAPI.WebAudioAPI.convolverNode

Parameters

WebAPI.WebAudioAPI.audioContext

Return type

WebAPI.WebAudioAPI.convolverNode

createDelay

Read more on MDN

let createDelay: (
  WebAPI.WebAudioAPI.audioContext,
  ~maxDelayTime: float=?,
) => WebAPI.WebAudioAPI.delayNode

Parameters

WebAPI.WebAudioAPI.audioContext option< float >

Return type

WebAPI.WebAudioAPI.delayNode

createDynamicsCompressor

Read more on MDN

let createDynamicsCompressor: WebAPI.WebAudioAPI.audioContext => WebAPI.WebAudioAPI.dynamicsCompressorNode

Parameters

WebAPI.WebAudioAPI.audioContext

Return type

WebAPI.WebAudioAPI.dynamicsCompressorNode

createGain

Read more on MDN

let createGain: WebAPI.WebAudioAPI.audioContext => WebAPI.WebAudioAPI.gainNode

Parameters

WebAPI.WebAudioAPI.audioContext

Return type

WebAPI.WebAudioAPI.gainNode

createIIRFilter

Read more on MDN

let createIIRFilter: (
  WebAPI.WebAudioAPI.audioContext,
  ~feedforward: array<float>,
  ~feedback: array<float>,
) => WebAPI.WebAudioAPI.iirFilterNode

Parameters

WebAPI.WebAudioAPI.audioContext array< float > array< float >

Return type

WebAPI.WebAudioAPI.iirFilterNode

createMediaElementSource

Read more on MDN

let createMediaElementSource: (
  WebAPI.WebAudioAPI.audioContext,
  WebAPI.DOMAPI.htmlMediaElement,
) => WebAPI.WebAudioAPI.mediaElementAudioSourceNode

Parameters

WebAPI.WebAudioAPI.audioContext WebAPI.DOMAPI.htmlMediaElement

Return type

WebAPI.WebAudioAPI.mediaElementAudioSourceNode

createMediaStreamDestination

Read more on MDN

let createMediaStreamDestination: WebAPI.WebAudioAPI.audioContext => WebAPI.WebAudioAPI.mediaStreamAudioDestinationNode

Parameters

WebAPI.WebAudioAPI.audioContext

Return type

WebAPI.WebAudioAPI.mediaStreamAudioDestinationNode

createMediaStreamSource

Read more on MDN

let createMediaStreamSource: (
  WebAPI.WebAudioAPI.audioContext,
  WebAPI.MediaCaptureAndStreamsAPI.mediaStream,
) => WebAPI.WebAudioAPI.mediaStreamAudioSourceNode

Parameters

WebAPI.WebAudioAPI.audioContext WebAPI.MediaCaptureAndStreamsAPI.mediaStream

Return type

WebAPI.WebAudioAPI.mediaStreamAudioSourceNode

createOscillator

Read more on MDN

let createOscillator: WebAPI.WebAudioAPI.audioContext => WebAPI.WebAudioAPI.oscillatorNode

Parameters

WebAPI.WebAudioAPI.audioContext

Return type

WebAPI.WebAudioAPI.oscillatorNode

createPanner

Read more on MDN

let createPanner: WebAPI.WebAudioAPI.audioContext => WebAPI.WebAudioAPI.pannerNode

Parameters

WebAPI.WebAudioAPI.audioContext

Return type

WebAPI.WebAudioAPI.pannerNode

createPeriodicWave

Read more on MDN

let createPeriodicWave: (
  WebAPI.WebAudioAPI.audioContext,
  ~real: array<float>,
  ~imag: array<float>,
  ~constraints: WebAPI.WebAudioAPI.periodicWaveConstraints=?,
) => WebAPI.WebAudioAPI.periodicWave

Parameters

WebAPI.WebAudioAPI.audioContext array< float > array< float > option< WebAPI.WebAudioAPI.periodicWaveConstraints >

Return type

WebAPI.WebAudioAPI.periodicWave

createStereoPanner

Read more on MDN

let createStereoPanner: WebAPI.WebAudioAPI.audioContext => WebAPI.WebAudioAPI.stereoPannerNode

Parameters

WebAPI.WebAudioAPI.audioContext

Return type

WebAPI.WebAudioAPI.stereoPannerNode

createWaveShaper

Read more on MDN

let createWaveShaper: WebAPI.WebAudioAPI.audioContext => WebAPI.WebAudioAPI.waveShaperNode

Parameters

WebAPI.WebAudioAPI.audioContext

Return type

WebAPI.WebAudioAPI.waveShaperNode

decodeAudioData

Read more on MDN

let decodeAudioData: (
  WebAPI.WebAudioAPI.audioContext,
  ~audioData: ArrayBuffer.t,
  ~successCallback: WebAPI.WebAudioAPI.decodeSuccessCallback=?,
  ~errorCallback: WebAPI.WebAudioAPI.decodeErrorCallback=?,
) => Promise.t<WebAPI.WebAudioAPI.audioBuffer>

Parameters

WebAPI.WebAudioAPI.audioContext ArrayBuffer.t option< WebAPI.WebAudioAPI.decodeSuccessCallback > option< WebAPI.WebAudioAPI.decodeErrorCallback >

Return type

Promise.t< WebAPI.WebAudioAPI.audioBuffer >

dispatchEvent

Dispatches a synthetic event event to target and returns true if either event's cancelable attribute value is false or its preventDefault() method was not invoked, and false otherwise. Read more on MDN

let dispatchEvent: (
  WebAPI.WebAudioAPI.audioContext,
  WebAPI.EventAPI.event,
) => bool

Parameters

WebAPI.WebAudioAPI.audioContext WebAPI.EventAPI.event

Return type

bool

getOutputTimestamp

Read more on MDN

let getOutputTimestamp: WebAPI.WebAudioAPI.audioContext => WebAPI.WebAudioAPI.audioTimestamp

Parameters

WebAPI.WebAudioAPI.audioContext

Return type

WebAPI.WebAudioAPI.audioTimestamp

make

Read more on MDN

let make: (
  ~contextOptions: WebAPI.WebAudioAPI.audioContextOptions=?,
) => WebAPI.WebAudioAPI.audioContext

Parameters

option< WebAPI.WebAudioAPI.audioContextOptions >

Return type

WebAPI.WebAudioAPI.audioContext

removeEventListener

Removes the event listener in target's event listener list with the same type, callback, and options. Read more on MDN

let removeEventListener: (
  WebAPI.WebAudioAPI.audioContext,
  ~type_: WebAPI.EventAPI.eventType,
  ~callback: WebAPI.EventAPI.eventListener<'event>,
  ~options: WebAPI.EventAPI.eventListenerOptions=?,
) => unit

Parameters

WebAPI.WebAudioAPI.audioContext WebAPI.EventAPI.eventType WebAPI.EventAPI.eventListener option< WebAPI.EventAPI.eventListenerOptions >

Return type

unit

removeEventListener_useCapture

Removes the event listener in target's event listener list with the same type, callback, and options. Read more on MDN

let removeEventListener_useCapture: (
  WebAPI.WebAudioAPI.audioContext,
  ~type_: WebAPI.EventAPI.eventType,
  ~callback: WebAPI.EventAPI.eventListener<'event>,
) => unit

Parameters

WebAPI.WebAudioAPI.audioContext WebAPI.EventAPI.eventType WebAPI.EventAPI.eventListener

Return type

unit

resume

Read more on MDN

let resume: WebAPI.WebAudioAPI.audioContext => Promise.t<unit>

Parameters

WebAPI.WebAudioAPI.audioContext

Return type

Promise.t< unit >

suspend

Read more on MDN

let suspend: WebAPI.WebAudioAPI.audioContext => Promise.t<unit>

Parameters

WebAPI.WebAudioAPI.audioContext

Return type

Promise.t< unit >