Endlessly rising Shepard Tone

Mar 24, 2009

After talking about the Shepard Tone, an audio illusion that can create an endlessly rising or falling scale, with my friend Ben Pender, I decided to try to create one using Lilypond. The result is quite interesting.

Chromatically rising Shepard Tone:

The midi file created by Lilypond: shepard_tone.midi

The Lilypond source used to render the above .midi (on GitHub)

A wav file generated from the midi file above: shepard_tone.wav (43M)

An mp3 file generated from the wav file above: