v1.6.0

Risset rhythm

Layer tempo cycles to create a beat that appears to accelerate or decelerate forever.

npx web-audio-api risset-rhythm up 120 20s
dir=<up|down>
movement direction
bpm=<number>
center tempo
-d, --duration <time>
run time (CLI accepts s/m/h suffixes; default: 20s)
sound=<preset>
click (default) or a metronome preset: classic, pendulum, quartz, wood, clave, bell, beep, signal, karatala
sample=<file>
use an audio file as the click sound instead of a preset
ready

Other examples

11Shepard toneLayer octave-spaced voices to create a pitch that appears to rise or fall forever.Explore 13Binaural beatsSend nearby frequencies to opposite ears and hear their difference.Explore 14Missing fundamentalPlay harmonics 2–6 while omitting the pitch the listener still perceives.Explore 15BeatingHear amplitude beating produced by two nearby frequencies.Explore

This renders the Risset rhythm illusion, the rhythmic cousin of the Shepard tone, where layered tempo cycles create a beat that seems to keep accelerating or decelerating without ever arriving. Hear it live in the browser, or render it from the Node CLI for a talk, a test signal, or further processing.