Octagar family: Difference between revisions
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{{Technical data page}} | {{Technical data page}} | ||
The '''octagar family''' of [[temperament]] | The '''octagar family''' of [[rank-3 temperament|rank-3]] [[regular temperament|temperaments]] [[tempering out|tempers out]] the octagar comma, [[4000/3969]]. | ||
[[ | For [[rank-2 temperament]]s that temper out the octagar comma, see [[Octagar temperaments]]. | ||
== Octagar == | == Octagar == | ||
This temperament is | Octagar is generated by a [[3/2|perfect fifth]] and a minor sixth of [[~]][[63/40]], two of which make ~[[5/2]], and three make an interval short of two octaves by a [[64/63|septimal comma]]. | ||
While many 7-limit rank-3 temperaments exhibit a tendency towards tuning flat, a slight sharp tendency is often preferred instead. Octagar provides this; for instance the [[7-odd-limit]] [[minimax tuning]] has [[3/1|3]]'s and [[7/1|7]]'s 2.245 cents sharp, with just [[5/1|5]]'s. | |||
This temperament is catalogued as ''octagari'' in [[Graham Breed]]'s [https://x31eq.com/temper/ Temperament Finder]. | |||
[[Subgroup]]: 2.3.5.7 | [[Subgroup]]: 2.3.5.7 | ||
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* [[CWE]]: ~2 = 1200.0000{{c}}, ~3/2 = 703.3764{{c}}, ~63/40 = 792.6299{{c}} | * [[CWE]]: ~2 = 1200.0000{{c}}, ~3/2 = 703.3764{{c}}, ~63/40 = 792.6299{{c}} | ||
: error map: {{val| 0.000 +1.421 -1.054 +2.311 }} | : error map: {{val| 0.000 +1.421 -1.054 +2.311 }} | ||
[[Minimax tuning]]: | [[Minimax tuning]]: | ||
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== Nakika == | == Nakika == | ||
Nakika tempers out [[100/99]] and [[245/242]], and is notably [[associated temperament|associated]] with [[octacot]]. | |||
[[Subgroup]]: 2.3.5.7.11 | [[Subgroup]]: 2.3.5.7.11 | ||
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* [[CWE]]: ~2 = 1200.0000{{c}}, ~3/2 = 703.6783{{c}}, ~11/7 = 791.5168{{c}} | * [[CWE]]: ~2 = 1200.0000{{c}}, ~3/2 = 703.6783{{c}}, ~11/7 = 791.5168{{c}} | ||
: error map: {{val| 0.000 +1.723 -3.280 -1.632 +7.393 }} | : error map: {{val| 0.000 +1.723 -3.280 -1.632 +7.393 }} | ||
{{Optimal ET sequence|legend=1| 12, 15, 26, 27e, 41, 109e }} | {{Optimal ET sequence|legend=1| 12, 15, 26, 27e, 41, 109e }} | ||
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[[Projection pair]]s: <code>5 242/49 7 21296/3087 11 234256/21609</code> to 2.3.11/7 | [[Projection pair]]s: <code>5 242/49 7 21296/3087 11 234256/21609</code> to 2.3.11/7 | ||
Scales: [[nakika12]] | Scales: [[nakika12]] | ||
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Comma list: 100/99, 105/104, 245/242 | Comma list: 100/99, 105/104, 245/242 | ||
{{Mapping|legend=0| 1 0 1 4 4 2 | 0 1 0 -2 -2 -1 | 0 0 2 3 4 5 }} | |||
Optimal tunings: | Optimal tunings: | ||
* WE: ~2 = 1200.5397{{c}}, ~3/2 = 702.2038{{c}}, ~11/7 = 789.6574{{c}} | * WE: ~2 = 1200.5397{{c}}, ~3/2 = 702.2038{{c}}, ~11/7 = 789.6574{{c}} | ||
* CWE: ~2 = 1200.0000{{c}}, ~3/2 = 702.0977{{c}}, ~11/7 = 789.5686{{c}} | * CWE: ~2 = 1200.0000{{c}}, ~3/2 = 702.0977{{c}}, ~11/7 = 789.5686{{c}} | ||
{{Optimal ET sequence|legend=0| 12f, 14cf, 15, 26, 29, 41 }} | {{Optimal ET sequence|legend=0| 12f, 14cf, 15, 26, 29, 41 }} | ||
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* [[CWE]]: ~2 = 1200.0000{{c}}, ~3/2 = 703.2662{{c}}, ~63/40 = 792.6212{{c}} | * [[CWE]]: ~2 = 1200.0000{{c}}, ~3/2 = 703.2662{{c}}, ~63/40 = 792.6212{{c}} | ||
: error map: {{val| 0.000 +1.311 -1.071 +2.505 +1.061 }} | : error map: {{val| 0.000 +1.311 -1.071 +2.505 +1.061 }} | ||
{{Optimal ET sequence|legend=1| 27e, 39d, 41, 53, 80, 94, 121, 174d, 215, 295d }} | {{Optimal ET sequence|legend=1| 27e, 39d, 41, 53, 80, 94, 121, 174d, 215, 295d }} | ||
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Comma list: 325/324, 352/351, 540/539 | Comma list: 325/324, 352/351, 540/539 | ||
{{Mapping|legend=0| 1 0 1 4 -5 0 | 0 1 0 -2 7 4 | 0 0 2 3 -4 -4 }} | |||
Optimal tunings: | Optimal tunings: | ||
* WE: ~2 = 1199.5112{{c}}, ~3/2 = 703.2823{{c}}, ~63/40 = 792.6491{{c}} | * WE: ~2 = 1199.5112{{c}}, ~3/2 = 703.2823{{c}}, ~63/40 = 792.6491{{c}} | ||
* CWE: ~2 = 1200.0000{{c}}, ~3/2 = 703.3684{{c}}, ~63/40 = 792.7875{{c}} | * CWE: ~2 = 1200.0000{{c}}, ~3/2 = 703.3684{{c}}, ~63/40 = 792.7875{{c}} | ||
{{Optimal ET sequence|legend=0| 27e, 41, 53, 80, 94, 121, 174d, 215, 295d, 336def }} | {{Optimal ET sequence|legend=0| 27e, 41, 53, 80, 94, 121, 174d, 215, 295d, 336def }} | ||
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Badness (Sintel): 1.03 | Badness (Sintel): 1.03 | ||
[[Category:Octagar family| ]] <!-- main article --> | |||
[[Category:Temperament families]] | [[Category:Temperament families]] | ||
[[Category: | [[Category:Catalogs of rank-3 temperaments]] | ||