121/64: Difference between revisions
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Revision as of 18:16, 27 October 2020
121/64, the Alpharabian major seventh, or octave-reduced 121st harmonic, is an 11-limit interval that results from stacking two 11/8 fourths. While the FJS and other systems that treat 33/32 as a comma end up designating 121/64 as a "minor seventh", this interval actually functions as a kind of major seventh- a property is particularly evident when you consider that its octave complement is a type of diatonic semitone.
See also
- 128/121 – its octave complement