8192/6561
(Redirected from Pythagorean diminished fourth)
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| Interval information |
reduced subharmonic
(Shannon, [math]\sqrt{nd}[/math])
The Pythagorean diminished fourth, 8192/6561, may be reached by subtracting two 81/64 intervals from the perfect octave. It differs from the classic major third, 5/4, by the schisma (around 2 cents), and, as a result, the Pythagorean diminished fourth is in fact rather consonant and some may consider it a major third (see Interval region).