122edo: Difference between revisions

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m Subsets and supersets: 244 also corrects harmonic 7
 
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{{Infobox ET}}
{{Infobox ET}}
{{EDO intro}}
{{ED intro}}


122 is flat in tendency, with the [[prime harmonic]]s from 3 to 13 tuned flat. The equal temperament [[tempering out|tempers out]] 78732/78125 in the [[5-limit]]; 225/224 in the [[7-limit]]; [[385/384]] and [[4000/3993]] in the [[11-limit]]; and [[351/350]] and [[364/363]] in the [[13-limit]]. It provides the [[optimal patent val]] for the 7-limit [[tritonic]] temperament and the 11-limit [[Marvel temperaments #Tritoni|tritoni]] temperament, and the [[rank-3 temperament|planar]] [[squalentine]] temperament.  
122 is flat in tendency, with the [[prime harmonic]]s from 3 to 13 tuned flat. As an equal temperament, it [[tempering out|tempers out]] 78732/78125 ([[sensipent comma]]) in the [[5-limit]]; [[225/224]] in the [[7-limit]]; [[385/384]] and [[4000/3993]] in the [[11-limit]]; and [[351/350]] and [[364/363]] in the [[13-limit]]. It provides the [[optimal patent val]] for the 7-limit [[tritonic]] temperament and the 11-limit [[Marvel temperaments #Tritoni|tritoni]] temperament, and the [[rank-3|planar]] temperament [[squalentine]].  


122 = [[55edo|55]] + [[67edo|67]], and so using the 122c val it is the convergent towards [[1/6-comma meantone]], with a fifth just a hundredth of a cent flatter.
122 = [[55edo|55]] + [[67edo|67]], and so using the 122c [[val]] it is the [[convergent]] towards [[1/6-comma meantone]], with a fifth just a hundredth of a cent flatter.


=== Odd harmonics ===
=== Odd harmonics ===
{{Harmonics in equal|122|23=}}
{{Harmonics in equal|122}}


Harmonic 25 (two 5/4 major thirds) is about halfway between 122edo's steps.
Harmonic 25 (two 5/4 major thirds) is about halfway between 122edo's steps.


=== Subsets and supersets ===
=== Subsets and supersets ===
Since 122 factors into {{factorization|122}}, 122edo contains [[2edo]] and [[61edo]] as its subsets. 244edo (double 122edo) provides a good correction to harmonic 25.  
Since 122 factors into {{factorization|122}}, 122edo contains [[2edo]] and [[61edo]] as its subsets. [[244edo]] (double 122edo) provides a good correction to harmonics 7 and 25.  


[[Category:Tritonic]]
[[Category:Tritonic]]
[[Category:Meantone]]
[[Category:Meantone]]