files/en-us/web/api/audiocontext/baselatency/index.md
{{APIRef("Web Audio API")}}
The baseLatency read-only property of the
{{domxref("AudioContext")}} interface returns a double that represents the number of
seconds of processing latency incurred by the AudioContext passing an audio
buffer from the {{domxref("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 {{domxref("AudioContext.AudioContext()", "construction time", "", "true")}} with the
latencyHintoption, but the browser may ignore the option.
A double representing the base latency in seconds.
// 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}}
{{Compat}}