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 |