Shepard Tone - Made by psychologist Roger Shepard at Bell Labs, this illusion contains a list of tones that seem to perpetually rise or slide. The illusion is produced by Tremendous-positioning pure tones (sine waves) an octave apart. Other illusions are based on basic assumptions the Mind would make https://johnnyndsgm.blogminds.com/illusion-of-kundun-mu-online-secrets-32745549