22edo: Difference between revisions
mNo edit summary |
|||
| Line 220: | Line 220: | ||
<nowiki>*</nowiki> some simpler ratios, ordered by increasing size, based on treating 22-edo as a 2.3.5.7.11.17 subgroup temperament; other approaches are possible. | <nowiki>*</nowiki> some simpler ratios, ordered by increasing size, based on treating 22-edo as a 2.3.5.7.11.17 subgroup temperament; other approaches are possible. | ||
== | == JI approximation == | ||
=== 15-odd-limit interval mappings === | |||
The following tables show how [[15-odd-limit intervals]] are represented in 22edo. Prime harmonics are in '''bold'''; inconsistent intervals are in ''italic''. | |||
{| class="wikitable center-all mw-collapsible mw-collapsed" | |||
|+style=white-space:nowrap| 15-odd-limit intervals by direct approximation (even if inconsistent) | |||
! Interval, complement | |||
! Error (abs, [[Cent|¢]]) | |||
! Error (rel, [[Relative cent|%]]) | |||
|- | |||
| [[9/7]], [[14/9]] | |||
| 1.280 | |||
| 2.3 | |||
|- | |||
| [[11/10]], [[20/11]] | |||
| 1.368 | |||
| 2.5 | |||
|- | |||
| [[15/8]], [[16/15]] | |||
| 2.640 | |||
| 4.8 | |||
|- | |||
| '''[[5/4]], [[8/5]]''' | |||
| '''4.496''' | |||
| '''8.2''' | |||
|- | |||
| [[7/6]], [[12/7]] | |||
| 5.856 | |||
| 10.7 | |||
|- | |||
| '''[[11/8]], [[16/11]]''' | |||
| '''5.863''' | |||
| '''10.7''' | |||
|- | |||
| '''[[3/2]], [[4/3]]''' | |||
| '''7.136''' | |||
| '''13.1''' | |||
|- | |||
| [[15/11]], [[22/15]] | |||
| 8.504 | |||
| 15.6 | |||
|- | |||
| [[15/14]], [[28/15]] | |||
| 10.352 | |||
| 19.0 | |||
|- | |||
| [[5/3]], [[6/5]] | |||
| 11.631 | |||
| 21.3 | |||
|- | |||
| '''[[7/4]], [[8/7]]''' | |||
| '''12.992''' | |||
| '''23.8''' | |||
|- | |||
| [[11/6]], [[12/11]] | |||
| 12.999 | |||
| 23.8 | |||
|- | |||
| [[9/8]], [[16/9]] | |||
| 14.272 | |||
| 26.2 | |||
|- | |||
| [[13/11]], [[22/13]] | |||
| 16.482 | |||
| 30.2 | |||
|- | |||
| [[7/5]], [[10/7]] | |||
| 17.488 | |||
| 32.1 | |||
|- | |||
| [[13/10]], [[20/13]] | |||
| 17.850 | |||
| 32.7 | |||
|- | |||
| ''[[13/9]], [[18/13]]'' | |||
| ''17.928'' | |||
| ''32.9'' | |||
|- | |||
| [[9/5]], [[10/9]] | |||
| 18.767 | |||
| 34.4 | |||
|- | |||
| [[11/7]], [[14/11]] | |||
| 18.856 | |||
| 34.6 | |||
|- | |||
| ''[[13/7]], [[14/13]]'' | |||
| ''19.207'' | |||
| ''35.2'' | |||
|- | |||
| [[11/9]], [[18/11]] | |||
| 20.135 | |||
| 36.9 | |||
|- | |||
| '''[[13/8]], [[16/13]]''' | |||
| '''22.346''' | |||
| '''41.0''' | |||
|- | |||
| [[15/13]], [[26/15]] | |||
| 24.986 | |||
| 45.8 | |||
|- | |||
| ''[[13/12]], [[24/13]]'' | |||
| ''25.064'' | |||
| ''46.0'' | |||
|} | |||
{{15-odd-limit|22}} | |||
=== Selected 17-limit intervals === | |||
[[File:22ed2-001e.svg|alt=alt : Your browser has no SVG support.]] | |||
== Regular temperament properties == | |||
{| class="wikitable center-4 center-5 center-6" | |||
! rowspan="2" | [[Subgroup]] | |||
! rowspan="2" | [[Comma list|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| 35 -22 }} | |||
| [{{val| 22 35 }}] | |||
| -2.25 | |||
| 2.25 | |||
| 4.12 | |||
|- | |||
| 2.3.5 | |||
| 250/243, 2048/2025 | |||
| [{{val| 22 35 51 }}] | |||
| -0.86 | |||
| 2.70 | |||
| 4.94 | |||
|- | |||
| 2.3.5.7 | |||
| 50/49, 64/63, 245/243 | |||
| [{{val| 22 35 51 62 }}] | |||
| -1.80 | |||
| 2.85 | |||
| 5.23 | |||
|- | |||
| 2.3.5.7.11 | |||
| 50/49, 55/54, 64/63, 99/98 | |||
| [{{val| 22 35 51 62 76 }}] | |||
| -1.11 | |||
| 2.90 | |||
| 5.33 | |||
|- | |||
| 2.3.5.7.11.17 | |||
| 50/49, 55/54, 64/63, 85/84, 99/98 | |||
| [{{val| 22 35 51 62 76 90 }}] | |||
| -1.09 | |||
| 2.65 | |||
| 4.87 | |||
|} | |||
22et is lower in relative error than any previous equal temperaments in the 11-limit. The next equal temperament that does better in this subgroup is [[31edo|31]]. 22et is even more prominent in the 2.3.5.7.11.17 subgroup, and the next equal temperament that does better in this subgroup is [[46edo|46]]. | |||
=== Commas === | |||
22et [[tempers out]] the following [[commas]]. (Note: This assumes the [[val]] {{val| 22 35 51 62 76 81 }}.) | |||
{| class="commatable wikitable center-all left-3 right-4 left-6" | |||
|- | |||
! [[Harmonic limit|Prime <br>limit]] | |||
! [[Ratio]]<ref>Ratios longer than 10 digits are presented by placeholders with informative hints</ref> | |||
! [[Monzo]] | |||
! [[Cents]] | |||
! [[Color name]] | |||
! Name | |||
|- | |||
| 5 | |||
| [[250/243]] | |||
| {{monzo| 1 -5 3 }} | |||
| 49.17 | |||
| Triyo | |||
| Porcupine comma | |||
|- | |||
| 5 | |||
| [[3125/3072]] | |||
| {{monzo| -10 -1 5 }} | |||
| 29.61 | |||
| Laquinyo | |||
| Magic comma | |||
|- | |||
| 5 | |||
| [[2048/2025]] | |||
| {{monzo| 11 -4 -2 }} | |||
| 19.55 | |||
| Sagugu | |||
| Diaschisma | |||
|- | |||
| 5 | |||
| [[2109375/2097152|(14 digits)]] | |||
| {{monzo| -21 3 7 }} | |||
| 10.06 | |||
| Lasepyo | |||
| [[Semicomma]] | |||
|- | |||
| 5 | |||
| <abbr title="4294967296/4271484375">(20 digits)</abbr> | |||
| {{monzo| 32 -7 -9 }} | |||
| 9.49 | |||
| Sasa-tritrigu | |||
| [[Escapade comma]] | |||
|- | |||
| 5 | |||
| <abbr title="9010162353515625/9007199254740992">(32 digits)</abbr> | |||
| {{monzo| -53 10 16 }} | |||
| 0.57 | |||
| Quadla-quadquadyo | |||
| [[Kwazy]] | |||
|- | |||
| 7 | |||
| [[50/49]] | |||
| {{monzo| 1 0 2 -2 }} | |||
| 34.98 | |||
| Biruyo | |||
| Jubilisma | |||
|- | |||
| 7 | |||
| [[64/63]] | |||
| {{monzo| 6 -2 0 -1 }} | |||
| 27.26 | |||
| Ru | |||
| Septimal comma | |||
|- | |||
| 7 | |||
| [[875/864]] | |||
| {{monzo| -5 -3 3 1 }} | |||
| 21.90 | |||
| Zotriyo | |||
| Keema | |||
|- | |||
| 7 | |||
| [[2430/2401]] | |||
| {{monzo| 1 5 1 -4 }} | |||
| 20.79 | |||
| Quadru-ayo | |||
| Nuwell | |||
|- | |||
| 7 | |||
| [[245/243]] | |||
| {{monzo| 0 -5 1 2 }} | |||
| 14.19 | |||
| Zozoyo | |||
| Sensamagic | |||
|- | |||
| 7 | |||
| [[1728/1715]] | |||
| {{monzo| 6 3 -1 -3 }} | |||
| 13.07 | |||
| Triru-agu | |||
| Orwellisma | |||
|- | |||
| 7 | |||
| [[225/224]] | |||
| {{monzo| -5 2 2 -1 }} | |||
| 7.71 | |||
| Ruyoyo | |||
| Marvel comma | |||
|- | |||
| 7 | |||
| [[10976/10935]] | |||
| {{monzo| 5 -7 -1 3 }} | |||
| 6.48 | |||
| Trizo-agu | |||
| Hemimage | |||
|- | |||
| 7 | |||
| [[6144/6125]] | |||
| {{monzo| 11 1 -3 -2 }} | |||
| 5.36 | |||
| Saruru-atrigu | |||
| Porwell | |||
|- | |||
| 7 | |||
| [[65625/65536]] | |||
| {{monzo| -16 1 5 1 }} | |||
| 2.35 | |||
| Lazoquinyo | |||
| Horwell | |||
|- | |||
| 7 | |||
| <abbr title="420175/419904">(12 digits)</abbr> | |||
| {{monzo| -6 -8 2 5 }} | |||
| 1.12 | |||
| Quinzo-ayoyo | |||
| [[Wizma]] | |||
|- | |||
| 11 | |||
| [[99/98]] | |||
| {{monzo| -1 2 0 -2 1 }} | |||
| 17.58 | |||
| Loruru | |||
| Mothwellsma | |||
|- | |||
| 11 | |||
| [[100/99]] | |||
| {{monzo| 2 -2 2 0 -1 }} | |||
| 17.40 | |||
| Luyoyo | |||
| Ptolemisma | |||
|- | |||
| 11 | |||
| [[121/120]] | |||
| {{monzo| -3 -1 -1 0 2 }} | |||
| 14.37 | |||
| Lologu | |||
| Biyatisma | |||
|- | |||
| 11 | |||
| [[176/175]] | |||
| {{monzo| 4 0 -2 -1 1 }} | |||
| 9.86 | |||
| Lorugugu | |||
| Valinorsma | |||
|- | |||
| 11 | |||
| [[896/891]] | |||
| {{monzo| 7 -4 0 1 -1 }} | |||
| 9.69 | |||
| Saluzo | |||
| Pentacircle | |||
|- | |||
| 11 | |||
| [[65536/65219]] | |||
| {{monzo| 16 0 0 -2 -3 }} | |||
| 8.39 | |||
| Satrilu-aruru | |||
| Orgonisma | |||
|- | |||
| 11 | |||
| [[385/384]] | |||
| {{monzo| -7 -1 1 1 1 }} | |||
| 4.50 | |||
| Lozoyo | |||
| Keenanisma | |||
|- | |||
| 11 | |||
| [[540/539]] | |||
| {{monzo| 2 3 1 -2 -1 }} | |||
| 3.21 | |||
| Lururuyo | |||
| Swetisma | |||
|- | |||
| 11 | |||
| [[4000/3993]] | |||
| {{monzo| 5 -1 3 0 -3 }} | |||
| 3.03 | |||
| Triluyo | |||
| Wizardharry | |||
|- | |||
| 11 | |||
| [[9801/9800]] | |||
| {{monzo| -3 4 -2 -2 2 }} | |||
| 0.18 | |||
| Bilorugu | |||
| Kalisma | |||
|- | |||
| 13 | |||
| [[91/90]] | |||
| {{monzo| -1 -2 -1 1 0 1 }} | |||
| 19.13 | |||
| Thozogu | |||
| Superleap | |||
|- | |||
| 31 | |||
| [[125/124]] | |||
| {{monzo| -2 0 3 0 0 0 0 0 0 0 -1 }} | |||
| 13.91 | |||
| Thiwutriyo | |||
| Twizzler | |||
|} | |||
<references/> | |||
=== Rank-2 temperaments === | |||
* [[List of 22et rank two temperaments by badness]] | |||
* [[List of 22et rank two temperaments by complexity]] | |||
* [[List of edo-distinct 22et rank two temperaments]] | |||
{| class="wikitable center-1 center-2" | |||
|- | |||
! Periods <br> per octave | |||
! Generator | |||
! Temperaments | |||
|- | |||
| 1 | |||
| 1\22 | |||
| [[Sensamagic clan #Sensa|Sensa]]<br>[[Chromo]]<br>[[Ceratitid]] | |||
|- | |||
| 1 | |||
| 3\22 | |||
| [[Porcupine]] | |||
|- | |||
| 1 | |||
| 5\22 | |||
| [[Orwell]] (22) / blair (22) / winston (22f) | |||
|- | |||
| 1 | |||
| 7\22 | |||
| [[Magic]] / telepathy | |||
|- | |||
| 1 | |||
| 9\22 | |||
| [[Superpyth]] / [[suprapyth]] | |||
|- | |||
| 2 | |||
| 1\22 | |||
| [[Shrutar]] / hemipaj<br>[[Comic]] | |||
|- | |||
| 2 | |||
| 2\22 | |||
| [[Srutal]] / [[pajara]] / pajarous | |||
|- | |||
| 2 | |||
| 3\22 | |||
| [[Hedgehog]] / [[echidna]] | |||
|- | |||
| 2 | |||
| 4\22 | |||
| [[Astrology]]<br>[[Antikythera]]<br>[[Wizard]] | |||
|- | |||
| 2 | |||
| 5\22 | |||
| [[Doublewide]] / fleetwood | |||
|- | |||
| 11 | |||
| 1\22 | |||
| [[Undeka]]<br>[[Hendecatonic]] | |||
|} | |||
== Scales == | |||
''See [[22edo modes]]''. | |||
== Tetrachords == | |||
''See [[22edo tetrachords]].'' | |||
== Approaches to notation == | |||
=== Superpyth/Porcupine Notation === | === Superpyth/Porcupine Notation === | ||
Superpyth/Porcupine Notation is a system arising from both superpyth and porcupine temperament. It categorizes each 22edo interval as major and minor of one or both of those temperaments. s indicates superpyth and p indicates porcupine. Because p now represents porcupine and not perfect, P in perfect intervals is no longer used in this system. Instead the number is used without P and is read as either just the number or "Natural". Example: P5 becomes 5 or N5 = Perfect fifth becomes Natural fifth. | Superpyth/Porcupine Notation is a system arising from both superpyth and porcupine temperament. It categorizes each 22edo interval as major and minor of one or both of those temperaments. s indicates superpyth and p indicates porcupine. Because p now represents porcupine and not perfect, P in perfect intervals is no longer used in this system. Instead the number is used without P and is read as either just the number or "Natural". Example: P5 becomes 5 or N5 = Perfect fifth becomes Natural fifth. | ||
| Line 283: | Line 722: | ||
{| class="wikitable center-all right-2" | {| class="wikitable center-all right-2" | ||
|- | |- | ||
! [[Degree]] | ![[Degree]] | ||
! [[cent|Cents]] | ![[cent|Cents]] | ||
! colspan="2" | Superpyth/Porcupine Notation | ! colspan="2" | Superpyth/Porcupine Notation | ||
! colspan="3" | Porcupine | ! colspan="3" | Porcupine | ||
| Line 763: | Line 1,202: | ||
! quality | ! quality | ||
![[color name]] | ![[color name]] | ||
! [[monzo]] format | ![[monzo]] format | ||
! examples | ! examples | ||
|- | |- | ||
| Line 799: | Line 1,238: | ||
{| class="wikitable center-all" | {| class="wikitable center-all" | ||
|- | |- | ||
! [[Kite's color notation|color of the 3rd]] | ![[Kite's color notation|color of the 3rd]] | ||
! JI chord | ! JI chord | ||
! notes as edosteps | ! notes as edosteps | ||
| Line 848: | Line 1,287: | ||
For a more complete list, see [[22edo Chord Names]] and [[Ups and Downs Notation #Chords and Chord Progressions]]. | For a more complete list, see [[22edo Chord Names]] and [[Ups and Downs Notation #Chords and Chord Progressions]]. | ||
== Music == | == Music == | ||