AudioWorklet

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since April 2021.

Secure context: This feature is available only in secure contexts (HTTPS), in some or all supporting browsers.

The AudioWorklet interface of the Web Audio API is used to supply custom audio processing scripts that execute in a separate thread to provide very low latency audio processing.

The worklet's code is run in the AudioWorkletGlobalScope global execution context, using a separate Web Audio thread which is shared by the worklet and other audio nodes.

Access the audio context's instance of AudioWorklet through the BaseAudioContext.audioWorklet property.

Instance properties

This interface also inherits properties defined on its parent interface, Worklet.

port Read only: Returns a MessagePort for custom, asynchronous communication between code in the main thread and the global scope of an audio worklet. This allows for custom messages, such as sending and receiving control data or global settings.

Instance methods

This interface inherits methods from Worklet. The AudioWorklet interface does not define any methods of its own.

Events

AudioWorklet has no events to which it responds.

Examples

See AudioWorkletNode for complete examples of custom audio node creation.

Specifications

Specification
Web Audio API # AudioWorklet