Endlessly rising Shepard Tone
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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)
An mp3 file generated from the midi file above: