v1.6.0

Latency tester

Play short clicks through the speakers and time their return through the microphone to measure round-trip latency.

npx web-audio-api latency-tester
interval=<s>
time between test clicks
rate=<hz>
microphone sample rate (default: 44100)
ch=<number>
input channels (default: 1)
bit=<number>
input PCM bit depth (default: 16)
backend=<name>
@audio/mic backend: miniaudio/auto or process
ready

Other examples

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This is an audio latency test: it plays short clicks through the speakers and times how long the microphone takes to hear them back, reporting the median round-trip latency in milliseconds. Try it in the browser to check a laptop or headset audio latency, or run the Node CLI version against @audio/mic for scripted round-trip latency measurements.