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Originally posted by Sarahko
I heard BAA the first time and VAA the second time....
It was obvious, even from the different way he was emitting sounds using his lips the second time.
Or maybe, I got something wrong somewhere?!
A visualization of the Shepard-risset glissando, a type of Shepard tone.
The Shepard tone is named after Roger Shepard, and is a sound consisting of a superposition of pitches separated by octaves. When the fundamentals fade into and out of a frequency range, it creates the illusion of a never-ending descent and ascent in pitch (that does not ultimately go any higher or lower).
Here, we synthesized the image on screen at 48-tones per octave, fading in from pitch to pitch to create the illusion of continuity. For the three segments, we have: a downwards glissando on the horn centered at 275Hz, an upwards glissando on the triangle wave centered at 330Hz, and a downwards glissando on the triangle wave centered at 330Hz.