422edo: Difference between revisions
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{{Infobox ET}} | {{Infobox ET}} | ||
{{ | {{ED intro}} | ||
== Theory == | == Theory == | ||
422edo is a [[zeta peak edo]], though not zeta integral nor zeta gap. It is [[consistency|distinctly consistent]] through the [[27-odd-limit]], with [[harmonic]]s of 3 through 23 all tuned sharp. | 422edo is a [[zeta peak edo]], though not zeta integral nor zeta gap. It is [[consistency|distinctly consistent]] through the [[27-odd-limit]], with [[harmonic]]s of 3 through 23 all tuned sharp. As an equal temperament, it [[tempering out|tempers out]] the [[vishnuzma]], {{monzo| 23 6 -14 }} and the countritonic comma, {{monzo| 33 -34 9 }}, in the 5-limit; [[4375/4374]] and [[589824/588245]] in the 7-limit; [[3025/3024]], [[5632/5625]], and [[9801/9800]] in the 11-limit; [[1716/1715]], [[2080/2079]], and [[2200/2197]] in the 13-limit; [[1156/1155]], [[1275/1274]], and [[2431/2430]] in the 17-limit; [[1216/1215]], [[1331/1330]], [[1445/1444]], and [[2432/2431]] in the 19-limit; and [[736/735]], [[1496/1495]], and [[1863/1862]] in the 23-limit. It [[support]]s and provides the [[optimal patent val]]s for [[gamera]] in the 7-limit, [[hemigamera]] in the 13-limit, and [[ragitritonic]] in the 11- and 13-limit. Other notable temperaments it supports are [[vishnu]] and [[semisupermajor]]. | ||
=== Prime harmonics === | === Prime harmonics === | ||
{{Harmonics in equal|422}} | {{Harmonics in equal|422|columns=11}} | ||
{{Harmonics in equal|422|columns=11|start=12|collapsed=1|title=Approximation of prime harmonics in 422edo (continued)}} | |||
{{Harmonics in equal|422|columns=11|start=23|collapsed=1|title=Approximation of prime harmonics in 422edo (continued)}} | |||
=== Subsets and supersets === | === Subsets and supersets === | ||
Since 422 factors into {{ | Since 422 factors into primes as {{nowrap| 2 × 211 }}, 422edo has subset edos [[2edo]] and [[211edo]]. | ||
== Regular temperament properties == | == 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 | | 2.3 | ||
| {{ | | {{Monzo| 669 -422 }} | ||
| {{ | | {{Mapping| 422 669 }} | ||
| | | −0.1308 | ||
| 0.1308 | | 0.1308 | ||
| 4.60 | | 4.60 | ||
|- | |- | ||
| 2.3.5 | | 2.3.5 | ||
| {{ | | {{Monzo| 23 6 -14 }}, {{monzo| 33 -34 9 }} | ||
| {{ | | {{Mapping| 422 669 980 }} | ||
| | | −0.1469 | ||
| 0.1092 | | 0.1092 | ||
| 3.84 | | 3.84 | ||
| Line 30: | Line 41: | ||
| 2.3.5.7 | | 2.3.5.7 | ||
| 4375/4374, 589824/588245, 29360128/29296875 | | 4375/4374, 589824/588245, 29360128/29296875 | ||
| {{ | | {{Mapping| 422 669 980 1185 }} | ||
| | | −0.1852 | ||
| 0.1155 | | 0.1155 | ||
| 4.06 | | 4.06 | ||
| Line 37: | Line 48: | ||
| 2.3.5.7.11 | | 2.3.5.7.11 | ||
| 3025/3024, 4375/4374, 5632/5625, 589824/588245 | | 3025/3024, 4375/4374, 5632/5625, 589824/588245 | ||
| {{ | | {{Mapping| 422 669 980 1185 1460 }} | ||
| | | −0.1679 | ||
| 0.1090 | | 0.1090 | ||
| 3.83 | | 3.83 | ||
| Line 44: | Line 55: | ||
| 2.3.5.7.11.13 | | 2.3.5.7.11.13 | ||
| 1716/1715, 2080/2079, 2200/2197, 3025/3024, 5632/5625 | | 1716/1715, 2080/2079, 2200/2197, 3025/3024, 5632/5625 | ||
| {{ | | {{Mapping| 422 669 980 1185 1460 1562 }} | ||
| | | −0.1930 | ||
| 0.1142 | | 0.1142 | ||
| 4.02 | | 4.02 | ||
| Line 51: | Line 62: | ||
| 2.3.5.7.11.13.17 | | 2.3.5.7.11.13.17 | ||
| 1156/1155, 1275/1274, 1716/1715, 2080/2079, 2200/2197, 2431/2430 | | 1156/1155, 1275/1274, 1716/1715, 2080/2079, 2200/2197, 2431/2430 | ||
| {{ | | {{Mapping| 422 669 980 1185 1460 1562 1725 }} | ||
| | | −0.1744 | ||
| 0.1151 | | 0.1151 | ||
| 4.05 | | 4.05 | ||
| Line 58: | Line 69: | ||
| 2.3.5.7.11.13.17.19 | | 2.3.5.7.11.13.17.19 | ||
| 1156/1155, 1216/1215, 1275/1274, 1331/1330, 1445/1444, 1716/1715, 2200/2197 | | 1156/1155, 1216/1215, 1275/1274, 1331/1330, 1445/1444, 1716/1715, 2200/2197 | ||
| {{ | | {{Mapping| 422 669 980 1185 1460 1562 1725 1793 }} | ||
| | | −0.1839 | ||
| 0.1106 | | 0.1106 | ||
| 3.89 | | 3.89 | ||
| Line 65: | Line 76: | ||
| 2.3.5.7.11.13.17.19.23 | | 2.3.5.7.11.13.17.19.23 | ||
| 736/735, 1156/1155, 1216/1215, 1275/1274, 1331/1330, 1445/1444, 1496/1495, 1716/1715 | | 736/735, 1156/1155, 1216/1215, 1275/1274, 1331/1330, 1445/1444, 1496/1495, 1716/1715 | ||
| {{ | | {{Mapping| 422 669 980 1185 1460 1562 1725 1793 1909 }} | ||
| | | −0.1675 | ||
| 0.1142 | | 0.1142 | ||
| 4.02 | | 4.02 | ||
|} | |||
* 422et has lower absolute errors than any previous equal temperaments in the 17-, 19-, and 23-limit. In the 17- and 19-limit it beats [[400edo|400]] and is bettered by [[460edo|460]]. In the 23-limit it beats [[373edo|373g]] and is bettered by [[525edo|525]]. | * 422et has lower absolute errors than any previous equal temperaments in the 17-, 19-, and 23-limit. In the 17- and 19-limit it beats [[400edo|400]] and is bettered by [[460edo|460]]. In the 23-limit it beats [[373edo|373g]] and is bettered by [[525edo|525]]. | ||
=== Rank-2 temperaments === | === 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 | | 1 | ||
| Line 91: | Line 109: | ||
| 435.07 | | 435.07 | ||
| 9/7 | | 9/7 | ||
| [[Supermajor]] | | [[Supermajor (temperament)|Supermajor]] | ||
|- | |- | ||
| 1 | | 1 | ||
| Line 97: | Line 115: | ||
| 588.63 | | 588.63 | ||
| 128/91 | | 128/91 | ||
| [[ | | [[Ragitritonic]] | ||
|- | |- | ||
| 2 | | 2 | ||
| Line 112: | Line 130: | ||
|- | |- | ||
| 2 | | 2 | ||
| 153\422<br | | 153\422<br>(58\422) | ||
| 435.07<br | | 435.07<br>(164.93) | ||
| 9/7<br | | 9/7<br>(11/10) | ||
| [[Semisupermajor]] | | [[Semisupermajor]] | ||
|} | |||
<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: | [[Category:Ragitritonic]] | ||
[[Category:Gamera]] | [[Category:Gamera]] | ||
[[Category:Vishnu]] | [[Category:Vishnu]] | ||