Swell
Tabs
Vibrato & chorus
Rotors Space
Generator motor `
1200 rpm
Tone generator — 91 wheels
Bars: each wheel’s tuning error vs equal temperament (gears are small-integer ratios). Glow: wheels the held keys are drawing on. Hover for details.
Leslie, from above
Output
live spectrum · markers: the nine tones of C4Spectrogram
live output · ticks: the nine tones of the last key, in drawbar coloursEach drawbar is a steady line. Through the Leslie the lines wobble with the Doppler shift; switch from slow to fast and the treble (the horn, above 800 Hz) catches up in under a second while the bass (the drum) takes several.