Below is a comparison between the first 31 harmonics and the intervals of 12-tone equal temperament (12TET), octave displaced and compressed into the span of one octave. Tinted fields highlight differences greater than 5 cents (1 ⁄ 20 of a semitone), which is the human ear's " just noticeable difference " for notes played one after the other (smaller differences are noticeable with notes played simultaneously).