Canousma: Difference between revisions

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The '''canousma''', 4802000/4782969 = {{monzo|4 -14 3 4}} is a [[7-limit]] [[comma]] measuring about 6.9 cents. It is the difference between the [[sensamagic comma]] and the cataharry. It is also the sum of the [[4375/4374|ragisma]] and the hemimage, or the sum of the [[2401/2400|breedsma]] and the [[amity comma]]. Tempering it out leads to the rank-3 [[canou family|canou temperament]].  
{{Infobox Interval
| Ratio = 4802000/4782969
| Name = canousma
| Color name = sz<sup>4</sup>y<sup>3</sup>3, saquadzo-atriyo 3rd
| Comma = yes
}}
 
The '''canousma''' ({{monzo|legend=1| 4 -14 3 4 }}, [[ratio]]: 4802000/4782969) is a [[7-limit]] [[comma]] measuring about 6.9 [[cent]]s. It is notable as the amount by which a stack of three instances of [[81/70]] falls short of [[14/9]]. It is also the interval separating the [[81/80|syntonic comma (81/80)]] from a stack of two [[245/243|sensamagic commas (245/243)]].
 
== Temperaments ==
Tempering it out leads to the [[canou family]] of rank-3 temperaments, which splits the syntonic comma into two equal parts, each representing 245/243. It also splits [[5/4]] (classic major third) into two equal parts, each representing 2450/2187~2187/1960. It is similar to [[3136/3125|hemimean]] in that regard. Tempering out both equates 245/243 with [[126/125]] (septimal semicomma) and [[225/224]] (septimal kleisma) leads to [[parakleismic]].
 
See [[Canou family]] for the rank-3 family where it is tempered out. See [[Canousmic temperaments]] for a collection of rank-2 temperaments where it is tempered out.
 
== Etymology ==
This comma was named by [[Flora Canou]] in 2020 after herself.  


== See also ==
== See also ==
* [[Canou family]]
* [[Small comma]]
* [[Comma]]


[[Category:7-limit]]
[[Category:Small comma]]
[[Category:Canou]]
[[Category:Canou]]
[[Category:Commas named after composers]]
[[Category:Commas named after music theorists]]
[[Category:Commas someone named after themselves]]