an endless rising tone. every voice glides upward forever, yet the pitch never leaves the middle of the band — a Shepard–Risset glissando, the auditory cousin of Escher's staircase. voices fade in at the bottom and out at the top under a fixed brightness bell, so the ear hears only ascent. reverse it to fall forever. step it through any EDO to hear the illusion quantized.
click the canvas to start · reverse flips ascent ↔ descent