149edo: Difference between revisions
Wikispaces>genewardsmith **Imported revision 214221602 - Original comment: ** |
+ note about 894edo |
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{{Infobox ET}} | |||
{{ED intro}} | |||
== Theory == | |||
149edo is the smallest division which is [[consistency|uniquely consistent]] through the [[17-odd-limit]]. It has a general flat tendency, with the fifth 1.28{{c}} flat, but the major third is a quarter of a cent sharp. | |||
In the 5-limit it [[tempering out|tempers out]] the [[sensipent comma]], 78732/78125; in the [[7-limit]], [[1029/1024]], [[3136/3125]] and [[19683/19600]]; in the [[11-limit]] [[385/384]] and [[441/440]]; in the [[13-limit]] [[351/350]], [[676/675]] and [[729/728]]; in the [[17-limit]] [[273/272]] and [[561/560]]; in the [[19-limit]] [[286/285]] and [[343/342]]. It provides the [[optimal patent val]] for 7-, 11-, 13-, and 17-limit [[heinz]] temperament and the rank-3 temperament [[gamelismic family #Ominous|ominous]] in the 13- and 17-limit. | |||
149 | |||
It is also usable in the [[23-limit]], only missing [[19/11]], [[21/11]], and their [[octave complement]]s in the [[23-odd-limit]]. In the [[27-odd-limit]], additional inconsistencies include [[25/21]], [[25/22]], [[27/20]], [[27/25]], [[27/19]], and their octave complements. | |||
=== Prime harmonics === | |||
{{Harmonics in equal|149}} | |||
=== Subsets and supersets === | |||
149edo is the 35th [[prime edo]]. As such, it does not contain any nontrivial subset edos. | |||
[[894edo]], which slices its step in six, is a notable system for the higher-limit, also consistent to the 17-odd-limit. | |||
== Regular temperament properties == | |||
{| class="wikitable center-4 center-5 center-6" | |||
|- | |||
! rowspan="2" | [[Subgroup]] | |||
! rowspan="2" | [[Comma list]] | |||
! rowspan="2" | [[Mapping]] | |||
! rowspan="2" | Optimal<br>8ve stretch (¢) | |||
! colspan="2" | Tuning error | |||
|- | |||
! [[TE error|Absolute]] (¢) | |||
! [[TE simple badness|Relative]] (%) | |||
|- | |||
| 2.3 | |||
| {{Monzo| -236 149 }} | |||
| {{Mapping| 149 236 }} | |||
| +0.405 | |||
| 0.405 | |||
| 5.03 | |||
|- | |||
| 2.3.5 | |||
| 78732/78125, {{monzo| -34 20 1 }} | |||
| {{Mapping| 149 236 346 }} | |||
| +0.232 | |||
| 0.411 | |||
| 5.11 | |||
|- | |||
| 2.3.5.7 | |||
| 1029/1024, 3136/3125, 19683/19600 | |||
| {{Mapping| 149 236 346 418 }} | |||
| +0.386 | |||
| 0.445 | |||
| 5.53 | |||
|- | |||
| 2.3.5.7.11 | |||
| 385/384, 441/440, 3136/3125, 19683/19600 | |||
| {{Mapping| 149 236 346 418 515 }} | |||
| +0.521 | |||
| 0.481 | |||
| 5.97 | |||
|- | |||
| 2.3.5.7.11.13 | |||
| 351/350, 385/384, 441/440, 676/675, 847/845 | |||
| {{Mapping| 149 236 346 418 515 551 }} | |||
| +0.567 | |||
| 0.451 | |||
| 5.60 | |||
|- | |||
| 2.3.5.7.11.13.17 | |||
| 273/272, 351/350, 385/384, 441/440, 676/675, 847/845 | |||
| {{Mapping| 149 236 346 418 515 551 609 }} | |||
| +0.495 | |||
| 0.453 | |||
| 5.62 | |||
|} | |||
=== Rank-2 temperaments === | |||
{| class="wikitable center-all left-5" | |||
|+ style="font-size: 105%;" | Table of rank-2 temperaments by generator | |||
|- | |||
! Periods<br>per 8ve | |||
! Generator* | |||
! Cents* | |||
! Associated<br>ratio* | |||
! Temperaments | |||
|- | |||
| 1 | |||
| 3\149 | |||
| 24.16 | |||
| 686/675 | |||
| [[Sengagen]] | |||
|- | |||
| 1 | |||
| 16\149 | |||
| 128.86 | |||
| 14/13 | |||
| [[Tertiathirds]] | |||
|- | |||
| 1 | |||
| 18\149 | |||
| 144.97 | |||
| 49/45 | |||
| [[Swetneus]] | |||
|- | |||
| 1 | |||
| 24\149 | |||
| 193.29 | |||
| 28/25 | |||
| [[Hemithirds]] | |||
|- | |||
| 1 | |||
| 29\149 | |||
| 233.56 | |||
| 8/7 | |||
| [[Slendric]] | |||
|- | |||
| 1 | |||
| 47\149 | |||
| 378.52 | |||
| 56/45 | |||
| [[Subpental]] | |||
|- | |||
| 1 | |||
| 55\149 | |||
| 442.95 | |||
| 162/125 | |||
| [[Sensipent]] | |||
|- | |||
| 1 | |||
| 57\149 | |||
| 459.06 | |||
| 125/96 | |||
| [[Majvam]] | |||
|- | |||
| 1 | |||
| 60\149 | |||
| 483.22 | |||
| 45/34 | |||
| [[Hemiseven]] | |||
|- | |||
| 1 | |||
| 61\149 | |||
| 491.28 | |||
| 3645/2744 | |||
| [[Fifthplus]] | |||
|- | |||
| 1 | |||
| 68\149 | |||
| 547.65 | |||
| 11/8 | |||
| [[Heinz]] | |||
|} | |||
<nowiki/>* [[Normal forms #Equave-reduced-generator form|Octave-reduced form]], reduced to the first half-octave, and [[normal forms #Minimal-generator form|minimal form]] in parentheses if distinct | |||
[[Category:Heinz]] | |||