277edo: Difference between revisions
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{{Infobox ET}} | {{Infobox ET}} | ||
{{EDO intro|277}} | {{EDO intro|277}} | ||
== Theory == | |||
277edo is a good 5-limit tuning; however, it is in[[consistent]] in the [[7-odd-limit]]. The equal temperament [[tempering out|tempers out]] 32805/32768 ([[schisma]]) and {{monzo| -11 -37 30 }} in the 5-limit. | |||
The [[patent val]] {{val| 277 439 643 778 }} tempers out [[4375/4374]], [[65625/65536]], and 829440/823543 in the 7-limit; [[540/539]], [[6250/6237]], 15488/15435, and 35937/35840 in the 11-limit; [[625/624]], [[729/728]], [[1573/1568]], [[2080/2079]], and [[2200/2197]] in the 13-limit. It [[support]]s [[pontiac]]. | |||
The | The 277d val {{val| 277 439 643 '''777''' }} tempers out [[1029/1024]], [[10976/10935]], and 48828125/48771072 in the 7-limit; [[385/384]], [[441/440]], [[19712/19683]], and 234375/234256 in the 11-limit; 625/624, [[847/845]], [[1001/1000]], and [[1575/1573]] in the 13-limit. It supports [[guiron]] and [[widefourth]]. | ||
===Prime harmonics=== | |||
=== Prime harmonics === | |||
{{Harmonics in equal|277}} | {{Harmonics in equal|277}} | ||
===Subsets and supersets=== | |||
277edo is the 59th [[prime | === Subsets and supersets === | ||
==Regular temperament properties== | 277edo is the 59th [[prime edo]]. | ||
== 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|Comma List]] | ! rowspan="2" | [[Comma list|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 | ||
|- | |- | ||
![[TE error|Absolute]] (¢) | ! [[TE error|Absolute]] (¢) | ||
![[TE simple badness|Relative]] (%) | ! [[TE simple badness|Relative]] (%) | ||
|- | |- | ||
|2.3 | | 2.3 | ||
|{{monzo|-439 277}} | | {{monzo| -439 277 }} | ||
|{{ | | {{mapping| 277 439 }} | ||
| 0.0473 | | 0.0473 | ||
| 0.0473 | | 0.0473 | ||
| 1.09 | | 1.09 | ||
|- | |- | ||
|2.3.5 | | 2.3.5 | ||
|32805/32768, {{monzo|-11 -37 30}} | | 32805/32768, {{monzo| -11 -37 30 }} | ||
|{{ | | {{mapping| 277 439 643 }} | ||
| 0.1398 | | 0.1398 | ||
| 0.1364 | | 0.1364 | ||
| 3.15 | | 3.15 | ||
|} | |} | ||
=== 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 | |+Table of rank-2 temperaments by generator | ||
! Periods<br>per 8ve | ! Periods<br>per 8ve | ||
! Generator | ! Generator* | ||
! Cents | ! Cents* | ||
! Associated<br>ratio | ! Associated<br>ratio* | ||
! Temperaments | ! Temperaments | ||
|- | |- | ||
|1 | | 1 | ||
|115\277 | | 115\277 | ||
|498.19 | | 498.19 | ||
|4/3 | | 4/3 | ||
|[[Helmholtz]] | | [[Helmholtz]] | ||
|} | |} | ||
[[ | <nowiki>*</nowiki> [[Normal lists|octave-reduced form]], reduced to the first half-octave, and [[Normal lists|minimal form]] in parentheses if it is distinct | ||
[[ |