472edo: Difference between revisions
+RTT table and rank-2 temperaments |
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{{Infobox ET}} | |||
{{ED intro}} | |||
472edo is [[ | == Theory == | ||
472edo is [[enfactoring|enfactored]] in the 5-limit, with the same tuning as [[118edo]], defined by [[tempering out]] the [[schisma]] and the [[parakleisma]], but the approximation to higher harmonics are much improved. It is a [[zeta peak integer edo]], [[consistent]] to the [[11-odd-limit]] or the no-13 [[29-odd-limit]]. | |||
In the 7-limit, the equal temperament tempers out [[2401/2400]], 2460375/2458624, and 30623756184/30517578125; in the 11-limit, [[9801/9800]], 46656/46585, 117649/117612, and 234375/234256, [[support]]ing the [[maviloid]] temperament, the [[Schismatic family #Bisesqui|bisesqui]] temperament, and the [[octant]] temperament. Using the [[patent val]], it tempers out [[729/728]], [[1575/1573]], [[2200/2197]], [[4096/4095]], and 21168/21125 in the 13-limit, so it also supports the 13-limit octant. | |||
=== Prime harmonics === | === Prime harmonics === | ||
{{Harmonics in equal|472}} | {{Harmonics in equal|472}} | ||
=== Subsets and supersets === | |||
Since 472 factors into {{factorization|472}}, 472edo has subset edos {{EDOs| 2, 4, 8, 59, 118, and 236 }}. | |||
== 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 stretch (¢) | ! rowspan="2" | Optimal<br />8ve stretch (¢) | ||
! colspan="2" | Tuning error | ! colspan="2" | Tuning error | ||
|- | |- | ||
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| 729/728, 1575/1573, 2200/2197, 2401/2400, 4096/4095 | | 729/728, 1575/1573, 2200/2197, 2401/2400, 4096/4095 | ||
| [{{val| 472 748 1096 1325 1633 1747 }}] | | [{{val| 472 748 1096 1325 1633 1747 }}] | ||
| | | −0.0341 | ||
| 0.1365 | | 0.1365 | ||
| 5.37 | | 5.37 | ||
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{| 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 | |- | ||
! Generator | ! Periods<br />per 8ve | ||
! Cents | ! Generator* | ||
! Associated<br>ratio | ! Cents* | ||
! Associated<br />ratio* | |||
! Temperaments | ! Temperaments | ||
|- | |- | ||
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| 1 | | 1 | ||
| 205\472 | | 205\472 | ||
| | | 521.19 | ||
| 875/648 | | 875/648 | ||
| [[Maviloid]] | | [[Maviloid]] | ||
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|- | |- | ||
| 8 | | 8 | ||
| 196\472<br>(19\472) | | 196\472<br />(19\472) | ||
| 498.31<br>(48.31) | | 498.31<br />(48.31) | ||
| 4/3<br>(36/35) | | 4/3<br />(36/35) | ||
| [[Octant]] | | [[Octant]] | ||
|} | |} | ||
<nowiki />* [[Normal lists|Octave-reduced form]], reduced to the first half-octave, and [[Normal lists|minimal form]] in parentheses if distinct | |||
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