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Interval information
Ratio 128/77
Monzo [7 0 0 -1 -1
Size in cents 879.85615
Name(s) keenanismic major sixth,
octave-reduced 77th subharmonic
FJS name M677

[sound info]
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128/77, the keenanismic major sixth or octave-reduced 77th subharmonic, is an interval that is 385/384 (4.5 cents) flatter than 5/3. It is almost exactly 1/7th of a cent flatter than the 880 cent major sixth of 15edo.

See also