[#]TIL #music
"A Shepard tone... is a sound consisting of a superposition of sine waves separated by octaves ... This creates the auditory illusion of a tone that seems to continually ascend or descend in pitch, yet which ultimately gets no higher or lower."
"Risset also created a similar effect with rhythm in which tempo seems to increase or decrease endlessly."
https://en.wikipedia.org/wiki/Jean-Claude_Risset
https://en.wikipedia.org/wiki/Shepard_tone
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