5120/5103: Difference between revisions
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'''5120/5103''', the '''hemifamity comma''' or '''5/7-kleisma''', is a [[7-limit]] [[comma]] measuring about 5.8{{cent}}. It is the difference between [[7/5]] (small septimal tritone) and [[1024/729]] (Pythagorean diminished fifth), or between [[10/7]] (large septimal tritone) and [[729/512]] (Pythagorean augmented fourth). It is also the difference between [[15/14]] and [[2187/2048]], between [[21/20]] and [[256/243]], between [[80/63]] and [[81/64]], etc., hence, between the septimal comma of [[64/63]] and the syntonic comma of [[81/80]]. | |||
'''5120/5103''', the '''hemifamity comma''' or '''5/7-kleisma''', is a [[7-limit]] [[ | |||
== Temperaments == | == Temperaments == | ||
Tempering it out leads to the rank-3 [[hemifamity family]], which splits the septimal quartertone [[36/35]] into two equal parts, each representing 81/80~64/63. Rank-2 temperaments that temper it out include [[hemififths]] and [[amity]], to name two. | Tempering it out leads to the rank-3 [[hemifamity family]], which splits the septimal quartertone [[36/35]] into two equal parts, each representing 81/80~64/63. Rank-2 temperaments that temper it out include [[hemififths]] and [[amity]], to name two. [[Edo]]s that temper it out include {{EDOs| 29, 34, 41, 46, 53, 58, 87, 94, 99, 111, 140, 145, 152, 239, 292, 391 }}, etc. | ||
== See also == | == See also == | ||
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[[Category:7-limit]] | [[Category:7-limit]] | ||
[[Category:Small commas]] | [[Category:Small commas]] | ||
[[Category:Hemifamity]] | [[Category:Hemifamity]] | ||