405/392: Difference between revisions
Created page with "{{Infobox Interval |Ratio = 405/392 |Name = greenwoodma |Color name = rry-2, ruruyo negative 2nd |Comma = yes }} '''405/392''', the '''greenwoodma''', is a 7-limit mediu..." |
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{{Infobox Interval | {{Infobox Interval | ||
|Ratio = 405/392 | | Ratio = 405/392 | ||
|Name = greenwoodma | | Name = greenwoodma | ||
|Color name = rry-2, ruruyo negative 2nd | | Color name = rry-2, ruruyo negative 2nd | ||
|Comma = yes | | Comma = yes | ||
}} | }} | ||
'''405/392''', the '''greenwoodma''', is a [[7-limit]] [[ | '''405/392''', the '''greenwoodma''', is a [[medium comma|medium]] [[7-limit]] [[comma]]. It is the difference between [[8/5]] and a stack of two [[9/7]]'s. In terms of commas, it is the sum of the [[81/80|syntonic comma (81/80)]] and the [[50/49|jubilisma (50/49)]]. | ||
In the 11-limit, it factors into simpler commas as ([[45/44]])⋅([[99/98]]). | |||
== Temperaments == | |||
[[Tempering out]] this comma leads to the rank-3 [[greenwoodmic]] temperament. This temperament splits a [[~]][[5/2]] in two, each representing ~[[14/9]]. See [[Greenwoodmic temperaments]] for a collection of rank-2 temperaments where it is tempered out. | |||
== Notation == | |||
=== Sagittal notation === | |||
In the [[Sagittal]] system, the downward version of this comma (possibly tempered) is represented by the sagittal {{sagittal | )\!/ }} and is called the '''49/5 medium diesis''', or '''49/5M''' for short, because the simplest interval it notates is 49/5 = 7×7/5 (equiv. 49/40), as for example in C-E{{nbhsp}}{{sagittal | )\!/ }}. The upward version is called '''5/49M''' or '''49/5M up''' and is represented by {{sagittal| )/|\ }}. | |||
[[Category:Greenwoodmic]] | [[Category:Greenwoodmic]] | ||
[[Category:Commas with unknown etymology]] | |||