Overtone An acoustics plate, wired for sound

Sixteen sine waves · one note

Why a clarinet
isn’t a violin

Same pitch, same loudness. The difference is these sixteen numbers — and you can move every one of them.

Ink key One colour per partial, the same in every figure.
Plate I

One sine has only pitch

Move it. That is the whole vocabulary.

Plate II

Sixteen sines still make one note

Add sines at 2×, 3×, 4× the frequency — the partials. You do not hear a chord. You hear one note that has changed colour.

Plate III

Timbre is sixteen numbers

Odd partials sound hollow. All of them sound bright. Draw your own.

Plate IV

A note also has a shape

Same sixteen numbers. Only the starting and stopping changes.

Plate V

The partials choose the scale

Partials close together beat, and beating is what rough sounds like. Add it up for two notes at once and the sweet intervals appear as valleys.

The bench

Everything, on one instrument

Redraw the recipe while a note is sounding. Send what you make with a link.