179edo: Difference between revisions
Wikispaces>genewardsmith **Imported revision 277518480 - Original comment: ** |
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{{Infobox ET}} | |||
{{ED intro}} | |||
== Theory == | |||
179edo does not approximate well any odd [[harmonic]] up to 23, best being [[21/16]] with 22% error. Nonetheless, it is [[consistent]] in the [[7-odd-limit]] and there are a number of temperaments to be considered. | |||
The equal temperament [[tempering out|tempers out]] the [[parakleisma]], {{monzo| 8 14 -13 }} in the 5-limit, and [[support]]s [[parakleismic]] and its [[extension]]s, providing the [[optimal patent val]] for 11- and 13-limit [[Ragismic microtemperaments #parkleismic|parkleismic]] temperament. In the 7-limit it tempers out [[3136/3125]], [[4375/4374]] and [[10976/10935]], in the 11-limit [[176/175]] and 1375/1372 and in the 13-limit [[169/168]], [[325/324]], [[351/350]] and [[352/351]], providing the optimal patent val for 11- and 13-limit [[ulmo]] temperament. It is additionally the optimal patent val for 7-limit [[cohemimabila]]. | |||
=== Odd harmonics === | |||
{{Harmonics in equal|179}} | |||
=== Subsets and supersets === | |||
179edo is the 41st [[prime edo]]. | |||
== 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| 284 -179 }} | |||
| {{Mapping| 179 284 }} | |||
| −0.6169 | |||
| 0.6166 | |||
| 9.20 | |||
|- | |||
| 2.3.5 | |||
| {{Monzo| 20 -17 3 }}, {{monzo| 28 -3 -10 }} | |||
| {{Mapping| 179 284 416 }} | |||
| −0.7718 | |||
| 0.5490 | |||
| 8.19 | |||
|- | |||
| 2.3.5.7 | |||
| 3136/3125, 4375/4374, 65536/64827 | |||
| {{Mapping| 179 284 416 503 }} | |||
| −0.8673 | |||
| 0.5034 | |||
| 7.51 | |||
|} | |||
=== 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 | |||
| 35\179 | |||
| 234.64 | |||
| 8/7 | |||
| [[Rodan]] (179d) | |||
|- | |||
| 1 | |||
| 47\179 | |||
| 315.08 | |||
| 6/5 | |||
| [[Parakleismic]] | |||
|- | |||
| 1 | |||
| 71\179 | |||
| 475.98 | |||
| 21/16 | |||
| [[Subfourth]] (179ef) | |||
|- | |||
| 1 | |||
| 79\179 | |||
| 529.61 | |||
| 512/375 | |||
| [[Mabila]] (5-limit) | |||
|} | |||
<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 | |||
== Music == | |||
; [[Francium]] | |||
* "in a hopeless situation" from ''hope in dark times'' (2024) – [https://open.spotify.com/track/787NGqkI5FHjQcfEOu4y4w Spotify] | [https://francium223.bandcamp.com/track/in-a-hopeless-situation Bandcamp] | [https://www.youtube.com/watch?v=kGdWmP81jwc YouTube] | |||
[[Category:Listen]] | |||