354edo: Difference between revisions
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{{Infobox ET}} | {{Infobox ET}} | ||
{{ | {{ED intro}} | ||
== Theory == | == Theory == | ||
354edo is [[ | 354edo is [[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 [[harmonic]]s are much improved. | ||
In the 7-limit, | In the 7-limit, it tempers out 118098/117649 (stearnsma), 250047/250000 ([[landscape comma]]), and 703125/702464 ([[meter]]); in the 11-limit, [[540/539]], and [[4000/3993]]; in the 13-limit, [[729/728]], [[1575/1573]], [[1716/1715]], [[2080/2079]], [[4096/4095]], and [[4225/4224]]. In the 13-limit, particularly 2.3.5.13 subgroup, one should consider [[peithoian]], as it preserves 5-limit tuning of 118edo while also improving the first harmonic 118edo tunes inconsistently. | ||
354edo provides the [[optimal patent val]] for [[stearnscape]], the 72 & 282 temperament, and 13- and 17-limit [[terminator]], the 171 & 183 temperament. | 354edo provides the [[optimal patent val]] for [[stearnscape]], the {{nowrap|72 & 282}} temperament, and 13- and 17-limit [[terminator]], the {{nowrap|171 & 183}} temperament. | ||
=== Prime harmonics === | === Prime harmonics === | ||
Line 16: | Line 16: | ||
== 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]] (%) | |||
|- | |- | ||
| 2.3.5.7 | | 2.3.5.7 | ||
| 32805/32768, 118098/117649, 250047/250000 | | 32805/32768, 118098/117649, 250047/250000 | ||
| {{mapping| 354 561 822 994 }} | | {{mapping| 354 561 822 994 }} | ||
| | | −0.0319 | ||
| 0.1432 | | 0.1432 | ||
| 4.23 | | 4.23 | ||
Line 28: | Line 37: | ||
| 540/539, 4000/3993, 32805/32768, 137781/137500 | | 540/539, 4000/3993, 32805/32768, 137781/137500 | ||
| {{mapping| 354 561 822 994 1225 }} | | {{mapping| 354 561 822 994 1225 }} | ||
| | | −0.0963 | ||
| 0.1817 | | 0.1817 | ||
| 5.36 | | 5.36 | ||
Line 35: | Line 44: | ||
| 540/539, 729/728, 1575/1573, 4096/4095, 31250/31213 | | 540/539, 729/728, 1575/1573, 4096/4095, 31250/31213 | ||
| {{mapping| 354 561 822 994 1225 1310 }} | | {{mapping| 354 561 822 994 1225 1310 }} | ||
| | | −0.0871 | ||
| 0.1671 | | 0.1671 | ||
| 4.93 | | 4.93 | ||
Line 42: | Line 51: | ||
| 540/539, 729/728, 936/935, 1156/1155, 1575/1573, 4096/4095 | | 540/539, 729/728, 936/935, 1156/1155, 1575/1573, 4096/4095 | ||
| {{mapping| 354 561 822 994 1225 1310 1447 }} | | {{mapping| 354 561 822 994 1225 1310 1447 }} | ||
| | | −0.0791 | ||
| 0.1559 | | 0.1559 | ||
| 4.60 | | 4.60 | ||
Line 49: | Line 58: | ||
| 540/539, 729/728, 936/935, 969/968, 1156/1155, 1445/1444, 1521/1520 | | 540/539, 729/728, 936/935, 969/968, 1156/1155, 1445/1444, 1521/1520 | ||
| {{mapping| 354 561 822 994 1225 1310 1447 1504 }} | | {{mapping| 354 561 822 994 1225 1310 1447 1504 }} | ||
| | | −0.0926 | ||
| 0.1509 | | 0.1509 | ||
| 4.43 | | 4.43 | ||
|} | |||
=== Rank-2 temperaments === | === Rank-2 temperaments === | ||
Note: 5-limit temperaments supported by [[118edo|118et]] are not included. | Note: 5-limit temperaments supported by [[118edo|118et]] are not included. | ||
{ | {| 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 | |||
|- | |- | ||
| 2 | | 2 | ||
Line 88: | Line 104: | ||
| 165/119<br />(?) | | 165/119<br />(?) | ||
| [[Oganesson]] | | [[Oganesson]] | ||
|} | |||
<nowiki />* [[Normal lists|Octave-reduced form]], reduced to the first half-octave, and [[Normal lists|minimal form]] in parentheses if distinct | |||
[[Category:Stearnscape]] | [[Category:Stearnscape]] |