308edo: Difference between revisions
The val must be specified if nonpatent |
Review |
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== Theory == | == Theory == | ||
308edo only is [[consistent]] in the [[5-odd-limit]]. Ignoring the [[harmonic]]s [[7/1|7]], [[11/1|11]] and [[13/1|13]], it is strong in the 2.3.5.17.19.23.29.31 [[subgroup]]. | |||
Using the [[patent val]] nonetheless, the equal temperament [[tempering out|tempers out]] [[19683/19600]], [[65625/65536]], and [[390625/388962]] in the 7-limit, and [[243/242]], 1375/1372, [[6250/6237]], [[9801/9800]], and 14700/14641 in the 11-limit. | |||
Using the 308d val, it supports [[unidec]] and [[gammic]]. | Using the 308d val, it supports [[unidec]] and [[gammic]]. | ||
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=== Subsets and supersets === | === Subsets and supersets === | ||
308 factors into 2<sup>2</sup> | Since 308 factors into 2<sup>2</sup> × 7 × 11, 308edo has subset edos {{EDOs| 2, 4, 7, 11, 14, 22, 28, 44, 77, and 154 }}. | ||
==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]] | ||
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! 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| -122 77 }} | | {{monzo| -122 77 }} | ||
| {{ | | {{mapping| 308 488 }} | ||
| 0.2070 | | 0.2070 | ||
| 0.2071 | | 0.2071 | ||
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| 2.3.5 | | 2.3.5 | ||
| {{monzo| -36 11 8 }}, {{monzo| -7 22 -12 }} | | {{monzo| -36 11 8 }}, {{monzo| -7 22 -12 }} | ||
| {{ | | {{mapping| 308 488 715 }} | ||
| 0.2241 | | 0.2241 | ||
| 0.1708 | | 0.1708 | ||
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|+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 | ||
|- | |- | ||
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| 128\308<br>(4\308) | | 128\308<br>(4\308) | ||
| 498.70<br>(15.58) | | 498.70<br>(15.58) | ||
| 4/3<br>( | | 4/3<br>(126/125) | ||
| [[Oquatonic]] | | [[Oquatonic]] (308) | ||
|} | |} | ||
<nowiki>*</nowiki> [[Normal lists|octave-reduced form]], reduced to the first half-octave, and [[Normal lists|minimal form]] in parentheses if it is distinct | |||