v1.6.0

Additive synth

Construct square, saw, and triangle timbres from individual harmonics.

npx web-audio-api additive square 220 16 3s
wave=<type>
square, saw, or triangle
freq=<hz|note>
frequency or note name in the CLI (default: 220)
n=<number>
number of harmonics
-d, --duration <time>
run time (CLI accepts s/m/h suffixes; default: 3s)
ready

Other examples

23Subtractive synthShape a sawtooth oscillator with a resonant low-pass sweep and ADSR envelope.Create 25FM synthUse one oscillator to modulate another oscillator’s frequency.Create 26Karplus–StrongTurn a short noise burst and averaging delay into a plucked string.Create 27Wavetable synthBuild custom Fourier wavetables and crossfade between two oscillators holding different timbres.Create

This is an additive synthesis demo: square, saw, and triangle timbres are built up harmonic by harmonic from individual sine oscillators rather than a built-in waveform. Hear it assembled live in the browser, or render the harmonic stack from the Node CLI.