135edo: Difference between revisions

+subsets and supersets
Theory: rework
Line 3: Line 3:


== Theory ==
== Theory ==
135edo is [[consistent]] to the [[7-odd-limit]], but there is a large relative delta for the [[5/1|5th]] and [[13/1|13th]] [[harmonic]]s.  
135edo is [[consistent]] to the [[7-odd-limit]], but there is a large relative delta for the [[5/1|5th]] and [[13/1|13th]] [[harmonic]]s. As every other step of the full 13-limit monster – [[270edo|270et]], 135et probably makes more sense as a 2.3.7.11 [[subgroup]] temperament, where it [[tempering out|tempers out]] the [[garischisma]] and the [[symbiotic comma]]. If we consider the full 13-limit, the flat-tending {{val| 135 214 313 379 467 '''499''' }} (135f) and the sharp-tending {{val| 135 214 '''314''' 379 467 500 }} (135c) are reasonable choices.  


Using the 135f [[val]] {{val| 135 214 313 379 467 '''499''' }}, which tends flat, 135et [[tempering out|tempers out]] 32805/32768 ([[schisma]]) and {{monzo| -11 -15 15 }} (quintriyo comma) in the 5-limit; [[225/224]], [[3125/3087]], and 28824005/28697814 in the 7-limit, [[385/384]], [[540/539]], 2200/2187, 12005/11979 and the [[quartisma]] in the 11-limit; [[169/168]] and [[364/363]] in the 13-limit.  
Using the 135f val, it tempers out 32805/32768 ([[schisma]]) and {{monzo| -11 -15 15 }} (quintriyo comma) in the 5-limit; [[225/224]], [[3125/3087]], and 28824005/28697814 in the 7-limit, [[385/384]], [[540/539]], 2200/2187, 12005/11979 and the [[quartisma]] in the 11-limit; [[169/168]] and [[364/363]] in the 13-limit.  


Using the 135c val {{val| 135 214 '''314''' 379 467 500 }}, which tends sharp, it tempers out 1594323/1562500 and 50331648/48828125 in the 5-limit; [[126/125]], [[10976/10935]], and [[589824/588245]] in the 7-limit; [[176/175]], [[441/440]], [[14641/14580]] and [[16384/16335]] in the 11-limit; [[196/195]], [[351/350]], [[352/351]], [[676/675]], and [[6656/6655]] in the 13-limit.
Using the 135c val, it tempers out 1594323/1562500 and 50331648/48828125 in the 5-limit; [[126/125]], [[10976/10935]], and [[589824/588245]] in the 7-limit; [[176/175]], [[441/440]], [[14641/14580]] and [[16384/16335]] in the 11-limit; [[196/195]], [[351/350]], [[352/351]], [[676/675]], and [[6656/6655]] in the 13-limit.  
 
As every other step of the full 13-limit monster – [[270edo|270et]], 135et probably makes more sense as a 2.3.7.11 [[subgroup]] temperament, where it tempers out the [[garischisma]] and the [[symbiotic comma]].  


=== Prime harmonics ===
=== Prime harmonics ===
Line 15: Line 13:


=== Subsets and supersets ===
=== Subsets and supersets ===
Since 135 factors into {{factorization|135}}, 135edo has subset edos {{EDOs| 3, 5, 9, 15, and 45 }}. 270edo, which doubles it, provides good correction for the approximation to harmonics 5, 13, and 19.  
Since 135 factors into {{factorization|135}}, 135edo has subset edos {{EDOs| 3, 5, 9, 15, and 45 }}. 270edo, which doubles it, provides good correction for the approximation to harmonics 5, 13, and 19.


== Regular temperament properties ==
== Regular temperament properties ==