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Encyclopedia of Microtonal Music Theory

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tricomma

[Joe Monzo]

The musical interval formed of three pythagorean commas, and thus having the ratio 150094635296999121:144115188075855872 = 2-57336 = = 2,3-monzo [-57 36, > = 0.70 Semitones = ~70.38003115 cents.

The pythagorean tricomma is very close in size to the 5-limit chromatic semitone. which has the ratio 25:24 = 2-33-152 = 2,3,5-monzo [-3 -1 2 > = ~70.67242686 cents], the difference forming the interval of a monzisma.

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REFERENCE

Margo Schulter, Yahoo tuning group, message 22165 (Sun May 6, 2001 7:13 am).

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