AudioContext: baseLatency property
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.
The baseLatency read-only property of the
AudioContext interface returns a double that represents the number of
seconds of processing latency incurred by the AudioContext passing an audio
buffer from the AudioDestinationNode — i.e. the end of the audio graph —
into the host system's audio subsystem ready for playing.
Note:
You can request a certain latency during
construction time with the
latencyHint option, but the browser may ignore the option.
Value
A double representing the base latency in seconds.
Examples
js
// default latency ("interactive")
const audioCtx1 = new AudioContext();
console.log(audioCtx1.baseLatency); // 0.00
// higher latency ("playback")
const audioCtx2 = new AudioContext({ latencyHint: "playback" });
console.log(audioCtx2.baseLatency); // 0.15
Specifications
| Specification |
|---|
| Web Audio API # dom-audiocontext-baselatency |
Browser compatibility
BCD tables only load in the browser