15625/15552: Difference between revisions

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{{Wikipedia|Kleisma}}
{{Wikipedia|Kleisma}}


'''15625/15552''', which is sometimes called the '''kleisma''', is the [[5-limit]] [[comma]] that separates a stack of six classic minor thirds of [[6/5]] with [[3/1]], and is also the difference between the classic chromatic semitone ([[25/24]]) and the greater diesis ([[648/625]]). It is tempered out in [[Hanson|Hanson temperament]] and the [[kleismic family]]. Like the [[magic comma]], instead of being tempered out in [[12edo]], it is inflated to an entire semitone—six 6/5's make an augmented eleventh (18 steps), while 3/1 is a perfect tweltfth (19 steps); conversely, 25/24 is mapped to a semitone while 648/625 is tempered out. Its [[Square_superparticular#Glossary|S-expression]] of S25<sup>2</sup> * S26 directly implies that it is expressible as ([[25/24]])<sup>2</sup>/([[27/25]]).
'''15625/15552''', which is sometimes called the '''kleisma''', is the [[small comma|small]] [[5-limit]] [[comma]] that separates a stack of six classic minor thirds of [[6/5]] with [[3/1]], and is also the difference between the classic chromatic semitone ([[25/24]]) and the greater diesis ([[648/625]]). Like the [[magic comma]], instead of being tempered out in [[12edo]], it is inflated to an entire semitone—six 6/5's make an augmented eleventh (18 steps), while 3/1 is a perfect tweltfth (19 steps); conversely, 25/24 is mapped to a semitone while 648/625 is tempered out. Its [[square superparticular #Glossary|S-expression]] of S25<sup>2</sup> × S26 directly implies that it is expressible as ([[25/24]])<sup>2</sup>/([[27/25]]).
 
== Temperaments ==
This comma is tempered out in the [[hanson]] temperament. See [[Kleismic family]] for the rank-2 temperament family where it is tempered out. See [[Kleismic rank three family|Kleismic rank-3 family]] for the rank-3 temperament family where it is tempered out.  


== See also ==
== See also ==
* [[Small comma]]
* [[Kleismic family]], the rank-2 temperament family where it is tempered out
* [[Kleismic rank three family]], the rank-3 temperament family where it is tempered out
* [[Kleisma]] (disambiguation page)
* [[Kleisma]] (disambiguation page)


[[Category:Kleismic]]
[[Category:Kleismic]]
[[Category:Commas named by translating something into another language]]
[[Category:Commas named by translating something into another language]]