403edo: Difference between revisions
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{{Infobox ET}} | {{Infobox ET}} | ||
{{ | {{ED intro}} | ||
== Theory == | == Theory == | ||
403edo is only [[consistent]] to the [[5-odd-limit]], since the error of [[harmonic]] [[7/1|7]] is quite large. To start with, the 403def [[val]] {{val| 403 639 936 '''1132''' '''1395''' '''1492''' }}, the 403df [[val]] {{val| 403 639 936 '''1132''' '''1394''' '''1492''' }}, and the [[patent val]] {{val| 403 639 936 '''1131''' '''1394''' '''1491''' }} are worth considering. | 403edo is only [[consistent]] to the [[5-odd-limit]], since the error of [[harmonic]] [[7/1|7]] is quite large. To start with, the 403def [[val]] {{val| 403 639 936 '''1132''' '''1395''' '''1492''' }}, the 403df [[val]] {{val| 403 639 936 '''1132''' '''1394''' '''1492''' }}, and the [[patent val]] {{val| 403 639 936 '''1131''' '''1394''' '''1491''' }} are worth considering. | ||
In any case, it [[tempering out|tempers out]] 1600000/1594323 ([[amity comma]]) and {{monzo| 70 0 -31 }} (31-5, or birds comma) in the 5-limit. | |||
Using the 403d val, it tempers out [[4375/4374]], [[5120/5103]], and [[6144/6125]] in the 7-limit, so that it [[support]]s [[amity|septimal amity]], the 152 & 251 temperament. Extending it by the 403def val, it tempers out [[540/539]], [[5632/5625]], [[6250/6237]], and [[19712/19683]] in the 11-limit, supporting 11-limit amity; and [[1575/1573]], [[1716/1715]], [[2200/2197]], 3584/3575 in the 13-limit. Extending it by the alternative 403df val, 1375/1372, [[14641/14580]] in the 11-limit; [[352/351]], [[847/845]], and [[2080/2079]] in the 13-limit. | Using the 403d val, it tempers out [[4375/4374]], [[5120/5103]], and [[6144/6125]] in the 7-limit, so that it [[support]]s [[amity|septimal amity]], the {{nowrap|152 & 251}} temperament. Extending it by the 403def val, it tempers out [[540/539]], [[5632/5625]], [[6250/6237]], and [[19712/19683]] in the 11-limit, supporting 11-limit amity; and [[1575/1573]], [[1716/1715]], [[2200/2197]], 3584/3575 in the 13-limit. Extending it by the alternative 403df val, [[1375/1372]], [[14641/14580]] in the 11-limit; [[352/351]], [[847/845]], and [[2080/2079]] in the 13-limit. | ||
Using the patent val, it tempers out [[3136/3125]], [[2100875/2097152]], and [[78125000/78121827]] in the 7-limit; [[3025/3024]], [[3388/3375]], 12005/11979, 14641/14580, 42875/42768, and [[131072/130977]] in the 11-limit; [[2080/2079]], [[4096/4095]], [[4225/4224]], [[6656/6655]], and [[10648/10647]] in the 13-limit. | Using the patent val, it tempers out [[3136/3125]], [[2100875/2097152]], and [[78125000/78121827]] in the 7-limit; [[3025/3024]], [[3388/3375]], 12005/11979, 14641/14580, 42875/42768, and [[131072/130977]] in the 11-limit; [[2080/2079]], [[4096/4095]], [[4225/4224]], [[6656/6655]], and [[10648/10647]] in the 13-limit. | ||
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=== Subsets and supersets === | === Subsets and supersets === | ||
Since 403 factors into {{factorization|403}}, 403edo contains [[13edo]] and [[31edo]] as subsets. | Since 403 factors into {{factorization|403}}, 403edo contains [[13edo]] and [[31edo]] as subsets. | ||
== Regular temperament properties == | == Regular temperament properties == | ||
{| class="wikitable center-4 center-5 center-6" | {| class="wikitable center-4 center-5 center-6" | ||
|- | |||
! rowspan="2" | [[Subgroup]] | ! rowspan="2" | [[Subgroup]] | ||
! rowspan="2" | [[Comma list | ! rowspan="2" | [[Comma list]] | ||
! rowspan="2" | [[Mapping]] | ! rowspan="2" | [[Mapping]] | ||
! rowspan="2" | Optimal<br>8ve | ! rowspan="2" | Optimal<br />8ve stretch (¢) | ||
! colspan="2" | Tuning | ! colspan="2" | Tuning error | ||
|- | |- | ||
! [[TE error|Absolute]] (¢) | ! [[TE error|Absolute]] (¢) | ||
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| {{monzo| 639 -403 }} | | {{monzo| 639 -403 }} | ||
| {{mapping| 403 639 }} | | {{mapping| 403 639 }} | ||
| | | −0.2443 | ||
| 0.2443 | | 0.2443 | ||
| 8.20 | | 8.20 | ||
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| 1600000/1594323, {{monzo| 81 -13 -26 }} | | 1600000/1594323, {{monzo| 81 -13 -26 }} | ||
| {{mapping| 403 639 936 }} | | {{mapping| 403 639 936 }} | ||
| | | −0.2753 | ||
| 0.2042 | | 0.2042 | ||
| 6.86 | | 6.86 | ||
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| 3136/3125, 1600000/1594323, 2100875/2097152 | | 3136/3125, 1600000/1594323, 2100875/2097152 | ||
| {{mapping| 403 639 936 1131 }} (403) | | {{mapping| 403 639 936 1131 }} (403) | ||
| | | −0.3751 | ||
| 0.2473 | | 0.2473 | ||
| 8.31 | | 8.31 | ||
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| 3025/3024, 3136/3125, 12005/11979, 131072/130977 | | 3025/3024, 3136/3125, 12005/11979, 131072/130977 | ||
| {{mapping| 403 639 936 1131 1394 }} (403) | | {{mapping| 403 639 936 1131 1394 }} (403) | ||
| | | −0.0621 | ||
| 0.3160 | | 0.3160 | ||
| 10.61 | | 10.61 | ||
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| 2080/2079, 3025/3024, 3136/3125, 4096/4095, 12005/11979 | | 2080/2079, 3025/3024, 3136/3125, 4096/4095, 12005/11979 | ||
| {{mapping| 403 639 936 1131 1394 1491 }} (403) | | {{mapping| 403 639 936 1131 1394 1491 }} (403) | ||
| | | −0.0146 | ||
| 0.3074 | | 0.3074 | ||
| 10.32 | | 10.32 | ||
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=== Rank-2 temperaments === | === Rank-2 temperaments === | ||
{| class="wikitable center-all left-5" | {| class="wikitable center-all left-5" | ||
|+Table of rank-2 temperaments by generator | |+ style="font-size: 105%;" | Table of rank-2 temperaments by generator | ||
! Periods<br>per 8ve | |- | ||
! Periods<br />per 8ve | |||
! Generator* | ! Generator* | ||
! Cents* | ! Cents* | ||
! Associated<br> | ! Associated<br />ratio* | ||
! Temperaments | ! Temperaments | ||
|- | |- | ||
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| [[Amity]] (403defff) | | [[Amity]] (403defff) | ||
|} | |} | ||
<nowiki>* | <nowiki />* [[Normal lists|Octave-reduced form]], reduced to the first half-octave, and [[Normal lists|minimal form]] in parentheses if distinct |