Sweep

Sweep across a frequency range with linear or exponential automation.

ready

node examples/sweep.js 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)
Graph
Oscillator.frequency automation → Gain → Destination
Input
Start/end frequency, duration
Output
Speaker audio

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.