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The AudioContextLatencyCategory
type is an enumerated set of strings which are used to select one of a number of default values for acceptable maximum latency of an audio context. By using these strings rather than a numeric value when specifying a latency to a AudioContext
, you can allow the user agent to select an appropriate latency for your use case that makes sense on the device on which your content is being used.
AudioContextLatencyCategory
can be used when constructing a new AudioContext
by passing one of these values as the latencyHint
option in the AudioContext()
constructor's options dictionary.
Values
Value | Description |
---|---|
"balanced" |
The user agent should balance audio output latency and power consumption when selecting a latency value. |
"interactive" |
The audio is involved in interactive elements, such as responding to user actions or needing to coincide with visual cues such as a video or game action. The user agent should select the lowest possible latency that doesn't cause glitches in the audio. This is likely to require increased power consumption. This is the default value. |
"playback" |
The user agent should select a latency that will maximize playback time by minimizing power consumption at the expense of latency. Useful for non-interactive playback, such as playing music. |
Specifications
Specification | Status | Comment |
---|---|---|
Web Audio API The definition of 'AudioContextLatencyCategory' in that specification. |
Working Draft | Initial definition. |
Browser compatibility
Showing compatibility for latencyHint
.
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
Desktop | Mobile | |||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
latencyHint | Chrome Full support 60 | Edge Full support ≤79 | Firefox Full support 61 | IE No support No | Opera ? | Safari ? | WebView Android Full support 60 | Chrome Android Full support 60 | Firefox Android Full support 61 | Opera Android ? | Safari iOS ? | Samsung Internet Android Full support 8.0 |
Legend
- Full support
- Full support
- No support
- No support
- Compatibility unknown
- Compatibility unknown