Shepard Tone - Produced by psychologist Roger Shepard at Bell Labs, this illusion is made of a list of tones that appear to perpetually increase or slide. The illusion is produced by super-positioning pure tones (sine waves) an octave apart. In contrast to hallucinations, that happen to be sensory https://homeworld385296.therainblog.com/34594450/the-smart-trick-of-illusion-of-kundun-mu-online-that-nobody-is-discussing