320edo: Difference between revisions
m Text replacement - "Octave-reduced form, reduced to the first half-octave, and minimal form in parentheses if distinct" to "Octave-reduced form, reduced to the first half-octave, and minimal form in parentheses if distinct" |
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{{Infobox ET}} | {{Infobox ET}} | ||
{{ | {{ED intro}} | ||
== Theory == | == Theory == | ||
320edo is [[consistent]] in the [[19-odd-limit]] and a fairly good tuning for the [[19-limit]]. It has a flat tendency for most [[prime harmonic]]s from 3 to 19, with the sole exception of [[17/1|17]]. | |||
As an equal temperament, it [[tempering out|tempers out]] 65625/65536 ([[horwell comma]]) and 420175/419904 ([[wizma]]) in the 7-limit and [[441/440]], [[8019/8000]] and [[9801/9800]] in the 11-limit, and so [[support]]s the [[varuna]] temperament, the rank-3 temperament tempering out 441/440, 8019/8000 and 9801/9800, for which it provides the [[optimal patent val]]. It also provides the optimal patent val for the rank-4 werckismic temperament tempering out 441/440. It tempers out [[729/728]], [[1001/1000]], [[1575/1573]], [[4225/4224]] and [[6656/6655]] in the 13-limit, leading to further temperaments for which it provides the optimal patent val, such as tempering out 441/440 with 729/728, 1001/1000 or both, or with 8019/8000, leading to an extension of varuna. | |||
=== Prime harmonics === | === Prime harmonics === | ||
{{Harmonics in equal|320|intervals=prime|columns=11}} | {{Harmonics in equal|320|intervals=prime|columns=11}} | ||
=== | === Subsets and supersets === | ||
Since 320 factors into 2<sup>6</sup> × 5, 320edo has subset edos {{EDOs| 2, 4, 5, 10, 16, 20, 32, 40, 64, 80, and 160 }}. | Since 320 factors into 2<sup>6</sup> × 5, 320edo has subset edos {{EDOs| 2, 4, 5, 10, 16, 20, 32, 40, 64, 80, and 160 }}. | ||
== 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]] (¢) | ||
| Line 23: | Line 26: | ||
|- | |- | ||
| 2.3 | | 2.3 | ||
| {{ | | {{Monzo| -507 320 }} | ||
| | | {{Mapping| 320 507 }} | ||
| +0.2224 | | +0.2224 | ||
| 0.2224 | | 0.2224 | ||
| Line 30: | Line 33: | ||
|- | |- | ||
| 2.3.5 | | 2.3.5 | ||
| {{ | | {{Monzo| 23 6 -14 }}, {{monzo| -28 25 -5 }} | ||
| | | {{Mapping| 320 507 743 }} | ||
| +0.1574 | | +0.1574 | ||
| 0.2036 | | 0.2036 | ||
| Line 38: | Line 41: | ||
| 2.3.5.7 | | 2.3.5.7 | ||
| 65625/65536, 235298/234375, 321489/320000 | | 65625/65536, 235298/234375, 321489/320000 | ||
| | | {{Mapping| 320 507 743 898 }} | ||
| +0.2361 | | +0.2361 | ||
| 0.2229 | | 0.2229 | ||
| Line 45: | Line 48: | ||
| 2.3.5.7.11 | | 2.3.5.7.11 | ||
| 441/440, 8019/8000, 41503/41472, 65625/65536 | | 441/440, 8019/8000, 41503/41472, 65625/65536 | ||
| | | {{Mapping| 320 507 743 898 1107 }} | ||
| +0.1928 | | +0.1928 | ||
| 0.2173 | | 0.2173 | ||
| Line 52: | Line 55: | ||
| 2.3.5.7.11.13 | | 2.3.5.7.11.13 | ||
| 441/440, 729/728, 1001/1000, 4225/4224, 6656/6655 | | 441/440, 729/728, 1001/1000, 4225/4224, 6656/6655 | ||
| | | {{Mapping| 320 507 743 898 1107 1184 }} | ||
| +0.1845 | | +0.1845 | ||
| 0.1993 | | 0.1993 | ||
| Line 59: | Line 62: | ||
| 2.3.5.7.11.13.17 | | 2.3.5.7.11.13.17 | ||
| 441/440, 729/728, 833/832, 1001/1000, 1089/1088, 4225/4224 | | 441/440, 729/728, 833/832, 1001/1000, 1089/1088, 4225/4224 | ||
| | | {{Mapping| 320 507 743 898 1107 1184 1308 }} | ||
| +0.1565 | | +0.1565 | ||
| 0.1968 | | 0.1968 | ||
| Line 66: | Line 69: | ||
| 2.3.5.7.11.13.17.19 | | 2.3.5.7.11.13.17.19 | ||
| 441/440, 513/512, 729/728, 833/832, 969/968, 1001/1000, 1521/1520 | | 441/440, 513/512, 729/728, 833/832, 969/968, 1001/1000, 1521/1520 | ||
| | | {{Mapping| 320 507 743 898 1107 1184 1308 1359 }} | ||
| +0.1741 | | +0.1741 | ||
| 0.1899 | | 0.1899 | ||
| Line 74: | Line 77: | ||
=== 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 | ||
|- | |- | ||
| Line 84: | Line 88: | ||
| 7\320 | | 7\320 | ||
| 26.25 | | 26.25 | ||
| {{ | | {{Monzo| -2 13 -8 }} | ||
| [[Sfourth]] (5-limit) | | [[Sfourth]] (5-limit) | ||
|- | |- | ||
| Line 115: | Line 119: | ||
| 498.75<br>(18.75) | | 498.75<br>(18.75) | ||
| 4/3<br>(81/80) | | 4/3<br>(81/80) | ||
| [[ | | [[Quintile]] | ||
|- | |- | ||
| 8 | | 8 | ||
| Line 133: | Line 137: | ||
| 498.75<br>(18.75) | | 498.75<br>(18.75) | ||
| 4/3<br>(81/80) | | 4/3<br>(81/80) | ||
| [[ | | [[Decile]] | ||
|- | |- | ||
| 20 | | 20 | ||
| Line 159: | Line 163: | ||
| [[Octogintic]] | | [[Octogintic]] | ||
|} | |} | ||
<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:Varuna]] | [[Category:Varuna]] | ||
[[Category:Werckismic]] | [[Category:Werckismic]] | ||