Semiporwellisma: Difference between revisions

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{{Infobox Interval
{{Infobox Interval
| Ratio = 16384/16335
| Ratio = 16384/16335
| Monzo = 14 -3 -1 0 -2
| Cents = 5.1854
| Name = semiporwellisma
| Name = semiporwellisma
| Color name =
| Color name = s1uug2, Salulugu comma
| FJS name =
| Comma = yes
| Sound =  
}}
}}


The '''semiporwellisma''', 16384/16335 = {{monzo| 14 -3 -1 0 -2 }} is an [[11-limit]] [[comma]] measuring about 5.19 [[cent]]s, named for it is one of the commas tempered out in the [[semiporwell]] temperament. It is the difference between two instances of [[33/32]], the undecimal quartertone, and [[16/15]], the classic diatonic semitone.  
The '''semiporwellisma''' ([[ratio]]: 16384/16335, {{monzo|legend=1| 14 -3 -1 0 -2 }}) is a [[small comma|small]] [[11-limit]] [[comma]] measuring about 5.19 [[cent]]s, named for it is one of the commas tempered out in the [[semiporwell]] temperament. It is the difference between two instances of [[33/32]], the undecimal quartertone, and [[16/15]], the classical diatonic semitone. It is also the difference between the [[rastma]] and the [[schisma]].  


In terms of commas, it is the difference between [[896/891]] and [[385/384]].  
In the full 11-limit, it is the difference between [[896/891]] and [[385/384]]. In the [[13-limit]] it factors into ([[2080/2079]])⋅([[3584/3575]]). In the [[31-limit]] it factors into ([[496/495]])⋅([[1024/1023]]) or ([[961/960]])⋅(1024/1023)<sup>2</sup> and gives rise to the [[S-expression]] S31⋅S32<sup>2</sup>.  


== Temperaments ==
== Temperaments ==
Tempering it out leads to the rank-4 '''semiporwellismic temperament''', where an octave can be split into 33/32-[[15/8]]-33/32.  
[[Tempering out]] this comma in the full 11-limit leads to the rank-4 '''semiporwellismic''' temperament (→ [[Rank-4 temperament #Semiporwellismic (16384/16335)]]), or in the [[2.3.5.11 subgroup]], the rank-3 [[semiporwellic]] temperament.  


== See also ==
See [[Semiporwellismic clan]] for the [[clan]] of rank-3 temperaments where it is tempered out.
* [[Rank-4 temperament #Semiporwellismic (16384/16335)]]
 
* [[Semiporwellismic clan]], the clan of rank-3 temperaments where it is tempered out
== Etymology ==
* [[Small comma]]
This comma was named by [[Flora Canou]] in 2021 after the semiporwell temperament, which in turn derives from [[6144/6125|porwell]], the 7-limit comma shared by [[porcupine]] and [[orwell]].


[[Category:11-limit]]
[[Category:Small comma]]
[[Category:Semiporwellismic]]
[[Category:Semiporwellismic]]
[[Category:Commas named by combining multiple temperament names]]
[[Category:Commas named after other creatives]]
[[Category:Commas named after compositions]]