Quintile family: Difference between revisions
+CTE tunings. +error maps. Spell out the period in cents. Note the badness metric being used. Misc. cleanup |
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{{Technical data page}} | |||
The '''quintile family''' of [[regular temperament|temperaments]] [[tempering out|tempers out]] the [[quintile comma]] ({{monzo|legend=1| -28 25 -5 }}, [[ratio]]: 847 288 609 443 / 838 860 800 000). | The '''quintile family''' of [[regular temperament|temperaments]] [[tempering out|tempers out]] the [[quintile comma]] ({{monzo|legend=1| -28 25 -5 }}, [[ratio]]: 847 288 609 443 / 838 860 800 000). | ||
== Quintile == | == Quintile == | ||
Quintile reaches the interval class of 5 by five perfect fifths (i.e. a major seventh) plus two periods of 1/5-octave. | Quintile reaches the interval class of 5 by five [[3/2|perfect fifths]] (i.e. a major seventh) plus two periods of 1/5-octave; this two-period interval represents a grave fourth of [[320/243]], that is, a [[4/3|perfect fourth]] minus a [[81/80|syntonic comma]]. Quintile is a member of the [[syntonic–diatonic equivalence continuum]] with {{nowrap| ''n'' {{=}} 5 }}, so it equates a [[256/243|Pythagorean limma]] with a stack of five [[81/80|syntonic commas]]. | ||
The temperament was first introduced by [[Mike Battaglia]] in 2011 along with other temperaments in the continuum mentioned above<ref>[https://yahootuninggroupsultimatebackup.github.io/tuning/topicId_99315.html#99323 Yahoo! Tuning Group | ''Some new 5-limit microtemperaments'']</ref>. It did not get named until 2012, when [[Petr Pařízek]] called it ''pental''<ref>[https://yahootuninggroupsultimatebackup.github.io/tuning/topicId_104270.html Yahoo! Tuning Group | ''2D temperaments, part II -- new 5-limit temperaments'']</ref>. In 2024, the community has decided to rename it for fear of confusion. | The temperament was first introduced by [[Mike Battaglia]] in 2011 along with other temperaments in the continuum mentioned above<ref>[https://yahootuninggroupsultimatebackup.github.io/tuning/topicId_99315.html#99323 Yahoo! Tuning Group | ''Some new 5-limit microtemperaments'']</ref>. It did not get named until 2012, when [[Petr Pařízek]] called it ''pental''<ref>[https://yahootuninggroupsultimatebackup.github.io/tuning/topicId_104270.html Yahoo! Tuning Group | ''2D temperaments, part II -- new 5-limit temperaments'']</ref>. In 2024, the community has decided to rename it for fear of confusion with the more common usage of the term ''pental'' to refer to the [[5-limit]]. | ||
[[Subgroup]]: 2.3.5 | [[Subgroup]]: 2.3.5 | ||
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Badness (Smith): 0.047624 | Badness (Smith): 0.047624 | ||
==== | ==== Hemiquintilis ==== | ||
Subgroup: 2.3.5.7.11.13 | Subgroup: 2.3.5.7.11.13 | ||
Comma list: 540/539, | Comma list: 351/350, 540/539, 676/675, 124215/123904 | ||
Mapping: {{mapping| 5 0 -28 18 -54 34 | 0 2 10 -1 18 | Mapping: {{mapping| 5 0 -28 18 -54 34 | 0 2 10 -1 18 13 }} | ||
Optimal tunings: | Optimal tunings: | ||
* CTE: ~147/128 = 240.0000, ~ | * CTE: ~147/128 = 240.0000, ~26/15 = 950.6775 (~176/175 = 9.3225) | ||
* POTE: ~147/128 = 240.0000, ~ | * POTE: ~147/128 = 240.0000, ~26/15 = 950.6593 (~176/175 = 9.3407) | ||
{{Optimal ET sequence|legend=0| | {{Optimal ET sequence|legend=0| 125f, 130, 255f, 385f }} | ||
Badness (Smith): 0. | Badness (Smith): 0.033542 | ||
==== | ==== Hemiquint ==== | ||
Subgroup: 2.3.5.7.11.13 | Subgroup: 2.3.5.7.11.13 | ||
Comma list: | Comma list: 540/539, 1575/1573, 4096/4095, 8019/8000 | ||
Mapping: {{mapping| 5 0 -28 18 -54 34 | 0 2 10 -1 18 13 }} | Mapping: {{mapping| 5 0 -28 18 -54 34 | 0 2 10 -1 18 -13 }} | ||
Optimal tunings: | Optimal tunings: | ||
* CTE: ~147/128 = 240.0000, ~140/81 = 950. | * CTE: ~147/128 = 240.0000, ~140/81 = 950.6607 (~144/143 = 9.3393) | ||
* POTE: ~147/128 = 240.0000, ~ | * POTE: ~147/128 = 240.0000, ~140/81 = 950.6677 (~144/143 = 9.3323) | ||
{{Optimal ET sequence|legend=0| | {{Optimal ET sequence|legend=0| 125, 130, 255, 385, 515 }} | ||
Badness (Smith): 0. | Badness (Smith): 0.041043 | ||
== Decile == | == Decile == | ||
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: mapping generators: ~15/14, ~3 | : mapping generators: ~15/14, ~3 | ||
[[Optimal tuning]]s: | [[Optimal tuning]]s: | ||