Original: Pythagorean tuning A Pythagorean tuning is technically a type of just intonation , in which the frequency ratios of the notes are all derived from the number ratio 3:2 , a ratio of central importance to the School of Pythagoras in Ancient Greece .
Simplified: Pythagorean tuning , a type of just intonation in which the ratios of the frequencies between all notes are all multiples of 3:2 .