Escapade family: Difference between revisions
decanonized "septimal escapade" |
added brief explanations at each extension |
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The '''escapade family''' tempers out the [[escapade comma]], {{monzo|32 -7 -9}}, of size 9.492 [[cent]]s. | The '''escapade family''' tempers out the [[escapade comma]], {{monzo|32 -7 -9}}, of size 9.492 [[cent]]s. The defining feature of this comma is splitting [[5/3]] into sixteen quartertones of which [[5/4]] makes up seven and [[4/3]] makes up nine; therefore [[16/15]] is two generator steps. | ||
Extensions of escapade include escapist, alphaquarter, | Extensions of escapade include escapist (21 & 22), tempering out [[225/224]] and mapping 7 to -4 generators; escaped (87 & 22), tempering out [[245/243]] and mapping 7 to -26 generators; alphaquarter (65d & 87), tempering out [[5120/5103]] and mapping 7 to 61 generators; septisuperfourth (aka biscapade) (22 & 86), tempering out [[6144/6125]], splitting the octave in half and mapping 7 to -15 generators; and arch (43 & 44), tempering out [[3136/3125]] and splitting the generator into two [[64/63]] intervals; all are considered below. | ||
== Escapade == | == Escapade == | ||
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=== 2.3.5.11 subgroup === | === 2.3.5.11 subgroup === | ||
Since (an ideally slightly flat) 4/3 is split in three by the interval of 3 generators, it makes sense to equate that interval to [[11/10]] by tempering out [[4000/3993]], and therefore the generator to (11/10)/(16/15) = [[33/32]]; this does minimal damage to the temperament. | |||
Subgroup: 2.3.5.11 | Subgroup: 2.3.5.11 | ||
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=== 2.3.5.11.31 subgroup === | === 2.3.5.11.31 subgroup === | ||
One may also note that the generator represents the square root of [[16/15]] and therefore it would be logical to temper out S31 = [[961/960]] so that the generator is equated to [[32/31]]~[[31/30]] in addition to 33/32. | |||
Subgroup: 2.3.5.11.31 | Subgroup: 2.3.5.11.31 | ||
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Mapping: {{Mapping| 1 2 2 3 5 | 0 -9 7 10 -1 }} | Mapping: {{Mapping| 1 2 2 3 5 | 0 -9 7 10 -1 }} | ||
Optimal tuning (CTE): ~2 = 1\1, ~ | Optimal tuning (CTE): ~2 = 1\1, ~32/31 = 55.276 | ||
{{Optimal ET sequence|legend=1| 21, 22, 43, 65, 87, 152, 369, 521e, 673e, 1194bcee, 1867bceeee }} | {{Optimal ET sequence|legend=1| 21, 22, 43, 65, 87, 152, 369, 521e, 673e, 1194bcee, 1867bceeee }} | ||
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== Escapist == | == Escapist == | ||
This temperament makes the identification of the 4-generator interval, representing [[16/15]]<sup>2</sup>, with [[8/7]] by tempering out [[225/224]]; however, this is somewhat inaccurate as the ~16/15 in escapade is slightly flat, while for a good marvel tuning it needs to be tempered sharpward to equate it with [[15/14]]. | |||
[[Subgroup]]: 2.3.5.7 | [[Subgroup]]: 2.3.5.7 | ||
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Badness: 0.035261 | Badness: 0.035261 | ||
== | == Escaped == | ||
This temperament was also known as "sensa" in earlier materials because it tempers out 245/243, 352/351, and 385/384 as a sensamagic temperament. ''Not to be confused with 19e & 27 temperament (sensi extension).'' | |||
Here, 245/243 is tempered out so that [[9/7]] is equated to the square root of 5/3 (at 8 generators) present in the temperament. This works best where 5/3 is slightly flat, therefore on the end of the spectrum approaching [[22edo]]. | |||
[[Subgroup]]: 2.3.5.7 | [[Subgroup]]: 2.3.5.7 | ||
[[Comma list]]: | [[Comma list]]: 245/243, 65625/65536 | ||
{{Mapping|legend=1| 1 2 2 | {{Mapping|legend=1| 1 2 2 4 | 0 -9 7 -26 }} | ||
{{Multival|legend=1| 9 -7 | {{Multival|legend=1| 9 -7 26 -32 16 80 }} | ||
[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~ | [[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~28/27 = 55.122 | ||
{{Optimal ET sequence|legend=1| | {{Optimal ET sequence|legend=1| 22, 65, 87, 196, 283 }} | ||
[[Badness]]: 0. | [[Badness]]: 0.088746 | ||
=== 11-limit === | === 11-limit === | ||
Subgroup: 2.3.5.7.11 | Subgroup: 2.3.5.7.11 | ||
Comma list: | Comma list: 245/243, 385/384, 4000/3993 | ||
Mapping: {{mapping| 1 2 2 | Mapping: {{mapping| 1 2 2 4 3 | 0 -9 7 -26 10 }} | ||
Optimal tuning (POTE): ~2 = 1\1, ~ | Optimal tuning (POTE): ~2 = 1\1, ~28/27 = 55.126 | ||
{{Optimal ET sequence|legend=1| | {{Optimal ET sequence|legend=1| 22, 65, 87, 196, 283 }} | ||
Badness: 0. | Badness: 0.035844 | ||
=== 13-limit === | === 13-limit === | ||
Subgroup: 2.3.5.7.11.13 | Subgroup: 2.3.5.7.11.13 | ||
Comma list: 352/351, 625/624 | Comma list: 245/243, 352/351, 385/384, 625/624 | ||
Mapping: {{mapping| 1 2 2 | Mapping: {{mapping| 1 2 2 4 3 2 | 0 -9 7 -26 10 37 }} | ||
Optimal tuning (POTE): ~2 = 1\1, ~ | Optimal tuning (POTE): ~2 = 1\1, ~28/27 = 55.138 | ||
{{Optimal ET sequence|legend=1| | {{Optimal ET sequence|legend=1| 22, 65, 87, 283 }} | ||
Badness: 0. | Badness: 0.031366 | ||
== | == Alphaquarter == | ||
Given the slightly sharp fifth in ideal tunings of escapade (between [[65edo]] and [[87edo]]), it does very little damage to temper out [[5120/5103]] to extend it to the 7-limit; the cost is that the harmonic 7 is exceedingly complex, located all the way at 61 generators up. | |||
[[Subgroup]]: 2.3.5.7 | [[Subgroup]]: 2.3.5.7 | ||
[[Comma list]]: | [[Comma list]]: 5120/5103, 29360128/29296875 | ||
{{Mapping|legend=1| 1 2 2 | {{Mapping|legend=1| 1 2 2 0 | 0 -9 7 61 }} | ||
{{Multival|legend=1| 9 -7 | {{Multival|legend=1| 9 -7 -61 -32 -122 -122 }} | ||
[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~ | [[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~16128/15625 = 55.243 | ||
{{Optimal ET sequence|legend=1| | {{Optimal ET sequence|legend=1| 65d, 87, 152, 239, 391 }} | ||
[[Badness]]: 0. | [[Badness]]: 0.116594 | ||
=== 11-limit === | === 11-limit === | ||
Subgroup: 2.3.5.7.11 | Subgroup: 2.3.5.7.11 | ||
Comma list: | Comma list: 3025/3024, 4000/3993, 5120/5103 | ||
Mapping: {{mapping| 1 2 2 | Mapping: {{mapping| 1 2 2 0 3 | 0 -9 7 61 10 }} | ||
Optimal tuning (POTE): ~2 = 1\1, ~ | Optimal tuning (POTE): ~2 = 1\1, ~33/32 = 55.243 | ||
{{Optimal ET sequence|legend=1| | {{Optimal ET sequence|legend=1| 65d, 87, 152, 239, 391 }} | ||
Badness: 0. | Badness: 0.029638 | ||
=== 13-limit === | === 13-limit === | ||
Subgroup: 2.3.5.7.11.13 | Subgroup: 2.3.5.7.11.13 | ||
Comma list: | Comma list: 352/351, 625/624, 847/845, 1575/1573 | ||
Mapping: {{mapping| 1 2 2 | Mapping: {{mapping| 1 2 2 0 3 2 | 0 -9 7 61 10 37 }} | ||
Optimal tuning (POTE): ~2 = 1\1, ~ | Optimal tuning (POTE): ~2 = 1\1, ~33/32 = 55.236 | ||
{{Optimal ET sequence|legend=1| | {{Optimal ET sequence|legend=1| 65d, 87, 152f, 239f }} | ||
Badness: 0. | Badness: 0.025344 | ||
== Septisuperfourth == | == Septisuperfourth == |