v1.6.0

Stereo test

Identify left, right, and center channels with a panned reference tone.

npx web-audio-api stereo-test 1k 1s
freq=<hz|note>
frequency or note name in the CLI (default: 1000)
-d, --duration <time>
run time (CLI accepts s/m/h suffixes; default: 1s)
ready

Other examples

06SweepSweep across a frequency range with linear or exponential automation.Measure 08ImpulseFire a one-sample impulse for response and signal-path testing.Measure 05Reference tonePlay a reference pitch with selectable waveform and frequency.Create 07NoiseGenerate white, pink, brown, blue, or violet noise.Create

This is a stereo channel test: a reference tone pans through left, right, and center so you can identify which speaker or headphone channel is which. Run it in the browser at a low volume, or render the same panned tone from the Node CLI.