135edo: Difference between revisions
m →Subsets and supersets: Link to 270edo |
Partial reversal -- last edit removed the note on the edo's notability in the 2.3.7.11 subgroup |
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== Theory == | == Theory == | ||
135edo is [[consistent]] to the [[7-odd-limit]], but | 135edo is [[consistent]] to the [[7-odd-limit]], but with large relative error for the [[5/1|5th]] and [[13/1|13th]] [[harmonic]]s. As every other step of the full [[13-limit]] monster – [[270edo|270et]], 135et makes most sense to use as a [[2.3.7.11 subgroup|2.3.7.11-]][[subgroup]] [[regular temperament|temperament]], where it is characterized by [[tempering out]] the [[garischisma]], the [[septiennealimma]], the [[symbiotic comma]], the [[argyria]], the [[chrysia]], and the [[olympia]]. On top of this, it also has fairly good approximations to primes [[17/1|17]], [[29/1|29]], and [[31/1|31]]. | ||
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. | 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. | ||
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=== Subsets and supersets === | === Subsets and supersets === | ||
Since 135 factors into primes as {{nowrap| 3<sup>3</sup> × 5 }}, 135edo has subset edos {{EDOs| 3, 5, 9, 15, 27, and 45 }}. [[270edo]], which doubles it, provides good | Since 135 factors into primes as {{nowrap| 3<sup>3</sup> × 5 }}, 135edo has subset edos {{EDOs| 3, 5, 9, 15, 27, and 45 }}. [[270edo]], which doubles it, notably provides extremely good corrections for the approximation to harmonics 5, 13, and 19. | ||
== Regular temperament properties == | == Regular temperament properties == | ||