v1.6.0

Sweep

Sweep across a frequency range with linear or exponential automation.

npx web-audio-api sweep 20..20k exp 3s
start..end
frequency range; either endpoint may be omitted (default: 20..20k)
mode=<exp|lin>
exponential or linear sweep
-d, --duration <time>
run time (CLI accepts s/m/h suffixes; default: 3s)
ready

Other examples

08ImpulseFire a one-sample impulse for response and signal-path testing.Measure 10Stereo testIdentify left, right, and center channels with a panned reference tone.Measure 05Reference tonePlay a reference pitch with selectable waveform and frequency.Create 07NoiseGenerate white, pink, brown, blue, or violet noise.Create

This is a frequency sweep test you can run as a speaker test from 20 Hz to 20 kHz, with linear or exponential automation across the range. Start at a low volume in the browser, or render the same sweep from the Node CLI for measurement or analysis.