Octagar temperaments: Difference between revisions
- POTE tunings |
Sorting by badness |
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This is a collection of [[rank-2 temperament|rank-2]] [[regular temperament|temperaments]] [[tempering out]] the [[octagar comma]] ({{monzo|legend=1| 5 -4 3 -2 }}, [[ratio]]: 4000/3969). | This is a collection of [[rank-2 temperament|rank-2]] [[regular temperament|temperaments]] [[tempering out]] the [[octagar comma]] ({{monzo|legend=1| 5 -4 3 -2 }}, [[ratio]]: 4000/3969). | ||
Temperaments | Temperaments discussed elsewhere are: | ||
* ''[[Sida]]'' (+25/24) → [[Dicot family #Sida|Dicot family]] | * ''[[Sida]]'' (+25/24) → [[Dicot family #Sida|Dicot family]] | ||
* ''[[Rip]]'' (+36/35) → [[Ripple family #Rip|Ripple family]] | * ''[[Rip]]'' (+36/35) → [[Ripple family #Rip|Ripple family]] | ||
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* ''[[Quintupole]]'' (+458752/455625) → [[Quintaleap family #Quintupole|Quintaleap family]] | * ''[[Quintupole]]'' (+458752/455625) → [[Quintaleap family #Quintupole|Quintaleap family]] | ||
Considered below are slithy, tridecatonic, slendi and dhaivatic, in the order of increasing [[badness]]. | |||
== Slithy == | == Slithy == | ||
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Badness (Sintel): 1.56 | Badness (Sintel): 1.56 | ||
== Slendi == | |||
Slendi may be described as the {{nowrap| 41 & 42 }} temperament. It has a generator of [[49/48]], seventeen of which give [[4/3]]. Its [[ploidacot]] is omega-17-cot. | |||
The name was likely derived from ''slendro diesis'', one of the names for the interval 49/48. | |||
[[Subgroup]]: 2.3.5.7 | |||
[[Comma list]]: 4000/3969, 84035/82944 | |||
{{Mapping|legend=1| 1 2 3 3 | 0 -17 -28 -8 }} | |||
: mapping generators: ~2, ~49/48 | |||
[[Optimal tuning]]s: | |||
* [[WE]]: ~2 = 1200.2515{{c}}, ~49/48 = 29.1870{{c}} | |||
: [[error map]]: {{val| +0.252 +2.368 -2.796 -1.568 }} | |||
* [[CWE]]: ~2 = 1200.0000{{c}}, ~49/48 = 29.1715{{c}} | |||
: error map: {{val| 0.000 +2.129 -3.116 -2.198 }} | |||
{{Optimal ET sequence|legend=1| 1c, 40c, 41, 206 }} | |||
[[Badness]] (Sintel): 3.62 | |||
=== 11-limit === | |||
Subgroup: 2.3.5.7.11 | |||
Comma list: 100/99, 245/242, 46656/46585 | |||
Mapping: {{mapping| 1 2 3 3 4 | 0 -17 -28 -8 -22 }} | |||
Optimal tunings: | |||
* WE: ~2 = 1199.8027{{c}}, ~49/48 = 29.1751{{c}} | |||
* CWE: ~2 = 1200.0000{{c}}, ~49/48 = 29.1875{{c}} | |||
{{Optimal ET sequence|legend=0| 1ce, 40c, 41 }} | |||
Badness (Sintel): 2.09 | |||
=== 13-limit === | |||
Subgroup: 2.3.5.7.11.13 | |||
Comma list: 100/99, 144/143, 245/242, 343/338 | |||
Mapping: {{mapping| 1 2 3 3 4 4 | 0 -17 -28 -8 -22 -12 }} | |||
Optimal tunings: | |||
* WE: ~2 = 1199.0915{{c}}, ~49/48 = 29.1033{{c}} | |||
* CWE: ~2 = 1200.0000{{c}}, ~49/48 = 29.1576{{c}} | |||
{{Optimal ET sequence|legend=0| 1ce, 41 }} | |||
Badness (Sintel): 1.80 | |||
== Dhaivatic == | == Dhaivatic == | ||