Subgroup temperaments: Difference between revisions
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{{Technical data page}} | |||
A '''subgroup temperament''' is a regular temperament defined on a [[just intonation subgroup]] that is not a full ''p''-limit group. | |||
For temperaments that omit various prime harmonics, see: | |||
* [[No-thirteens subgroup temperaments]] | |||
* [[No-elevens subgroup temperaments]] | |||
* [[No-sevens subgroup temperaments]] | |||
* [[No-fives subgroup temperaments]] | |||
* [[No-threes subgroup temperaments]] | |||
* [[No-twos subgroup temperaments]] (additionally, [[Catalog of 3.5.7 subgroup rank two temperaments]]). | |||
Below are some temperaments for composite subgroups and fractional subgroups. Obviously, no attempt has been made at completeness; attention is focused on subgroups containing interesting chords. The reader may also want to consult the page on [[Chromatic pairs]]. | |||
[[ | = Composite subgroup temperaments = | ||
== 2.9.5.7 subgroup == | |||
See also [[Jubilismic clan #Antikythera|antikythera]] and [[Hemimean clan #Isra|isra]]. | |||
[[ | === Commatose === | ||
Commatose is a [[Dual-fifth temperaments|dual-fifth temperament]] which uses the Pythagorean comma as a generator. It was developed by [[Eliora]] to highlight the near-perfect expression of 9/8 by [[1789edo]], while at the same time the fact that it completely misses 3/2. It is described as the 460 & 1329 temperament. In the 13-limit extension 24 generators are equal to [[~]][[13/9]]. | |||
[[Subgroup]]: 2.9.5.7 | |||
[[ | |||
[[Comma list]]: {{monzo| 28 -2 -19 8 }}, {{monzo| 9 -25 23 6 }} | |||
{{Mapping|legend=2| 1 9 6 13 | 0 -298 -188 -521 }} | |||
[[ | [[Optimal tuning]] ([[CTE]]): ~2 = 1\1, ~531441/524288 = 23.4765 | ||
{{Optimal ET sequence|legend=1| 460, 869, 1329 }} | |||
[[Badness]]: 0.611 | |||
[[ | |||
== | ==== 2.9.5.7.11 ==== | ||
Subgroup: 2.9.5.7.11 | |||
Comma list: {{monzo| -7 7 -3 2 -4 }}, {{monzo| 17 0 -13 1 3 }}, {{monzo| 11 -2 -6 7 -3 }} | |||
Sval mapping: {{mapping| 1 9 6 13 16 | 0 -298 -188 -521 -641 }} | |||
Optimal tuning (CTE): ~2 = 1\1, ~531441/524288 = 23.4767 | |||
= | {{Optimal ET sequence|legend=1| 460, 869e, 1329, 1789, 3118 }} | ||
Badness: 0.165 | |||
==== 2.9.5.7.11.13 ==== | |||
Subgroup: 2.9.5.7.11.13 | |||
Comma list: 123201/123200, 1016064/1015625, 2250423/2249390, 2599051/2598156 | |||
Sval mapping: {{mapping| 0 9 6 13 16 10 | -298 -188 -521 -641 -322 }} | |||
Optimal tuning (CTE): ~2 = 1\1, ~3575/3528 = 23.4767 | |||
{{Optimal ET sequence|legend=1| 460, 869e, 1329, 1789, 3118 }} | |||
Badness: 0.0564 | |||
== | === Daemotertiaschis === | ||
{{See also|Schismatic family#Tertiaschis}} | |||
Daemotertiaschis is produced by taking every other generator of tertiaschis, and the subgroup is chosen so it tempers out exactly the same commas. It is notable due to offering a [[7L 4s|daemotonic 7L 4s]] scale of reasonable hardness, which is notoriously difficult to approximate with simple JI or RTT methods. | |||
Subgroup: 2.9.5.7.33.13.17 | |||
Comma list: 325/324, 375/374, 385/384, 595/594, 10985/10976 | |||
{{Mapping|legend=2|1 1 11 -16 13 -18 20|0 3 -12 26 -11 30 -22}} | |||
= | Optimal tuning (CTE): ~2 = 1\1, 33/20 = 867.982 | ||
[[ | [[Support]]ing [[ET]]s: {{Optimal ET sequence|47, 65f, 112, 159, 206, 253}} | ||
=== Baldy === | |||
{{See also|Schismatic family #Garibaldi}} | |||
{{See also|No-threes subgroup temperaments #Frostburn}} | |||
Baldy results from taking every other generator of the [[garibaldi]] temperament. One of the best extension is 2.9.5.7.13 subgroup with mapping 13/8 to +10 whole tones, as well as the cassandra temperament. | |||
[[Subgroup]]: 2.9.5.7 | |||
[[ | |||
[[Comma list]]: 225/224, 3125/3087 | |||
= | {{Mapping|legend=2| 1 3 3 4 | 0 1 -4 -7 }} | ||
[[ | [[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~9/8 = 204.170 | ||
{{Optimal ET sequence|legend=1| 6, 29, 35, 41, 47 }} | |||
Related temperament: [[Schismatic family #Garibaldi|Garibaldi]] | |||
[ | |||
== | ==== 2.9.5.7.13 ==== | ||
{{See also|Chromatic pairs #Baldy}} | |||
[[ | Baldy is every other step of [[garibaldi]], without the mapping of prime 11. It can be described as the 6 & 35 temperament. | ||
[[Subgroup]]: 2.9.5.7.13 | |||
[[Comma list]]: [[225/224]], [[325/324]], [[640/637]] | |||
[[ | |||
= | {{Mapping|legend=2| 1 0 15 25 -28 | 0 1 -4 -7 10 }} | ||
{{Mapping|legend=3| 1 3/2 3 4 0 2 | 0 1/2 -4 -7 0 10 }} | |||
: [[gencom]]: [2 9/8; 225/224 325/324 640/637] | |||
[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~9/8 = 204.090 | |||
[[ | |||
= | {{Optimal ET sequence|legend=1| 6, 11, 17, 23, 29, 35, 41, 47, 100, 147, 488cd, 635cd }} | ||
[[Tp tuning #T2 tuning|RMS error]]: 0.5999 cents | |||
Related temperament: [[Schismatic family #Garibaldi|Cassandra]] | |||
==== Baldanders ==== | |||
Baldanders results from taking every other generator of the andromeda, with mapping 11/8 to -9 whole tones. | |||
Subgroup: 2.9.5.7.11 | |||
Comma list: 100/99, 225/224, 245/242 | |||
{{Mapping|legend=2| 1 3 3 4 5 | 0 1 -4 -7 -9 }} | |||
Optimal tuning (POTE): ~2 = 1\1, ~9/8 = 204.743 | |||
{{Optimal ET sequence|legend=1| 6, 23de, 29, 35, 41 }} | |||
Related temperament: [[Schismatic family #Garibaldi|Andromeda]] | |||
===== 2.9.5.7.11.13 ===== | |||
Subgroup: 2.9.5.7.11.13 | |||
Comma list: 100/99, 144/143, 225/224, 245/242 | |||
{{Mapping|legend=2| 1 3 3 4 5 2 | 0 1 -4 -7 -9 10 }} | |||
= | Optimal tuning (POTE): ~2 = 1\1, ~9/8 = 204.414 | ||
{{Optimal ET sequence|legend=1| 6, 23def, 29f, 35, 41, 47 }} | |||
== 2.3.25 subgroup == | |||
=== Shrub === | |||
This is a restriction of diaschismic which omits the tritone to produce a diatonic scale. True to its name, it generates a [[shrubmajor]] third (~425c) in quarter-comma tuning. | |||
[[ | |||
Subgroup: 2.3.25 | |||
Edo join: 17 & 12 | |||
[[ | Comma list: [[2048/2025]] | ||
{{Mapping|legend=2| 1 1 7| 0 1 -4}} | |||
=2. | Optimal tuning (CTE): ~2 = 1\1, ~3/2 = 705.136 | ||
== | ==== 2.3.23.25.41 subgroup ==== | ||
''See also: [[Reversed meantone]]'' | |||
Edo join: 17 & 12 | |||
Comma list: 2048/2025, 576/575, 82/81 | |||
{{Mapping|legend=2| 1 1 1 7 3| 0 1 6 -4 4}} | |||
=2. | Optimal tuning (CTE): ~2 = 1\1, ~3/2 = 705.264 | ||
== | ===== Sburb ===== | ||
This temperament sets the [[octave reduction|octave-reduced]] 413th harmonic (413/256, 827.998{{c}}) to the diminished seventh. | |||
Subgroup: 2.3.7.23.25.41.59 | |||
Edo join: 17 & 12 | |||
Comma list: 64/63, 225/224, 162/161, 82/81, 177/175 | |||
= | {{Mapping|legend=2| 1 1 4 1 7 3 10| 0 1 -2 6 -4 4 -7}} | ||
Optimal tuning (CTE): ~2 = 1\1, ~3/2 = 706.387 | |||
== 2.9.5.11 subgroup == | |||
=== Glacial === | |||
{{See also| Chromatic pairs #Glacial }} | |||
[[ | [[Subgroup]]: 2.9.5.11.13 | ||
[[Comma list]]: 45/44, 65/64, 81/80 | |||
{{Mapping|legend=2| 1 0 -4 -6 10 | 0 1 2 3 -2 }} | |||
{{Mapping|legend=3| 1 3/2 2 0 3 4 | 0 1/2 2 0 3 -2 }} | |||
[[ | : [[gencom]]: [2 9/8; 45/44 65/64 81/80] | ||
= | [[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~9/8 = 186.151 | ||
= | {{Optimal ET sequence|legend=1| 6, 13, 45be, 58bce, 71bce, 84bce }} | ||
[[ | [[Tp tuning #T2 tuning|RMS error]]: 2.887 cents | ||
Music: | |||
* ''[[Thundersnow]]'' - [[Sevish]] (2021) | |||
== 2.9.7 subgroup == | |||
=== Mabon === | |||
[ | Derived from a [http://individual.utoronto.ca/kalendis/leap/index.htm#se calendar leap cycle built for the autumn equinox], hence the name. Defined as the 11 & 62 temperament. | ||
Subgroup: 2.9.7 | |||
Comma basis: 44957696/43046721 | |||
Sval mapping: [{{val|1 1 -3}}, {{val|0 3 8}}] | |||
Optimal tuning (CTE): ~729/448 = 870.792 | |||
= | {{Optimal ET sequence|legend=1|7d, 11, 18d, 29, 40, 62}}, ... | ||
==== 2.9.7.11 subgroup ==== | |||
Subgroup: 2.9.7.11 | |||
Comma basis: 896/891, 1331/1296 | |||
Sval | Sval mapping: [{{val|1 1 -3 2}}, {{val|0 3 8 2}}] | ||
= | Optimal tuning (CTE): ~16/11 = 870.966 | ||
{{Optimal ET sequence|legend=1| 7d, 11, 40, 51, 62 }} | |||
== 2.9.7.11 subgroup == | |||
=== Apparatus === | |||
[[Subgroup]]: 2.9.7.11 | |||
[[Comma list]]: 41503/41472, 322102/321489 | |||
[[ | |||
=2 | {{Mapping|legend=2| 1 5 3 5 | 0 -19 -2 -16 }} | ||
: mapping generators: ~2, ~77/72 | |||
{{Mapping|legend=3| 1 5/2 0 3 5 | 0 -19/2 0 -2 -16 }} | |||
: [[gencom]]: [2 77/72; 41503/41472 322102/321489] | |||
= | [[Optimal tuning]] ([[CTE]]): ~77/72 = 115.5685 | ||
{{Optimal ET sequence|legend=1| 10e, 21, 31, 52, 83, 135, 353, 488, 623 }} | |||
[[ | [[Badness]]: 0.00263 | ||
=== Joan === | |||
{{See also| Chromatic pairs #Joan }} | |||
Joan is related to [[casablanca]] as well as to [[orwell]]. | |||
[[Subgroup]]: 2.9.7.11 | |||
[[Comma list]]: 99/98, 9317/9216 | |||
{{Mapping|legend=2| 1 0 1 3 | 0 7 4 1 }} | |||
{{Mapping|legend=3| 1 0 0 1 3 | 0 7/2 0 4 1 }} | |||
: [[gencom]]: [2 11/8; 99/98 9317/9216] | |||
[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~11/8 = 542.672 cents | |||
{{Optimal ET sequence|legend=1| 11, 20, 31, 42, 115bd, 157bd }} | |||
[[Tp tuning #T2 tuning|RMS error]]: 1.424 cents | |||
=== Machine === | |||
Machine is every other step of [[supra]], most interesting for its scale patterns. | |||
[[Subgroup]]: 2.9.7.11 | |||
[[Comma list]]: 64/63, 99/98 | |||
{{Mapping|legend=2| 1 0 6 13 | 0 1 -1 -3 }} | |||
: sval mapping generators: ~2, ~9 | |||
{{Mapping|legend=3| 1 3/2 0 3 4 | 0 1/2 0 -1 -3 }} | |||
: [[gencom]]: [2 8/7; 64/63 99/98] | |||
[[Optimal tuning]]s: | |||
* [[CTE]]: ~2 = 1\1, ~9/8 = 216.9128 | |||
* [[POTE]]: ~2 = 1\1, ~9/8 = 214.3843 | |||
{{Optimal ET sequence|legend=1| 5, 6, 11, 17, 28 }} | |||
[[Badness]]: 0.00233 | |||
=== Penta a.k.a. mechanism === | |||
Penta or mechanism is the 8 & 11 temperament in the 2.9.7.11 subgroup. | |||
[[Subgroup]]: 2.9.7.11 | |||
[[Comma list]]: 896/891, 26411/26244 | |||
{{Mapping|legend=2| 1 0 -1 6 | 0 5 6 -4 }} | |||
: sval mapping generators: ~2, ~14/9 | |||
{{Mapping|legend=3| 1 5/2 0 5 2 | 0 -5/2 0 -6 4 }} | |||
: [[gencom]]: [2 9/7; 896/891 26411/26244] | |||
[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~14/9 = 761.3782 | |||
{{Optimal ET sequence|legend=1| 8, 11, 30, 41, 52 }} | |||
[[Tp tuning #T2 tuning|RMS error]]: 0.4262 cents | |||
[[Badness]]: 0.00439 | |||
Scales: [[penta5]], [[penta8]], [[penta11]], [[penta19]] | |||
== 2.9.7.13.17 subgroup == | |||
=== Novisept === | |||
Novisept is generated by a one-cent-flat 9/7, such that stacking 5 of them gives you 7/4. It can be formed by doubling both generator and period of [[gizzard]]. | |||
[[Subgroup]]: 2.9.7.13.17 | |||
[[Comma list]]: 729/728, 442/441, 833/832 | |||
{{Mapping|legend=2| 1 1 1 -1 3| 0 6 5 13 3 }} | |||
[[Optimal tuning]] ([[CWE]]): ~2 = 1\1, ~9/7 = 433.836 | |||
== 2.9.11 subgroup == | |||
=== Demon === | |||
Demon is a temperament which equates 3 [[11/9]] with [[16/9]], or equivalently 3 [[18/11]] with [[9/8]], tempering out [[1331/1296]]. This results in [[11/9]] being tuned flat to a supraminor third, and [[27/22]] being tuned sharp to a submajor third. It was discovered by [[User:CompactStar|CompactStar]] while searching for temperaments assosciated with the [[7L 4s]] ("daemotonic") MOS, known for its lack of representation of simple temperaments. The optimal tuning for demon temperament is near the basic tuning of 7L 4s (13\18), and indeed [[18edo]] supports demon temperament. | |||
[[Subgroup]]: 2.9.11 | |||
[[Comma list]]: [[1331/1296]] | |||
{{Mapping|legend=2|1 1 2|0 3 2}} | |||
[[Optimal tuning]] ([[CTE]]): ~[[18/11]] = 870.060 | |||
{{Optimal ET sequence|legend=1|4, 7, 11, 18, 29, 76e}} | |||
=== Genius === | |||
Named after the genius in Roman religion, following the demon (daimon) in Greek mythology. | |||
[[Subgroup]]: 2.9.11 | |||
[[Comma list]]: [[131769/131072]] | |||
{{Mapping|legend=2|1 1 4|0 4 -1}} | |||
[[Optimal tuning]] ([[CTE]]): ~[[16/11]] = 650.863 | |||
{{Optimal ET sequence|legend=1|9, 11, 24, 59, 83, 142, 225, 367}}[-11], 592[-11], 959[-9, --11], 1326[-9, --11] | |||
== 2.9.15.7 subgroup == | |||
=== Stacks (a.k.a. 2magic) === | |||
Stacks, the 11 & 30 temperament in the 2.9.15.7.11.13 subgroup, is every other step of [[magic]]. | |||
[[Subgroup]]: 2.9.15.7 | |||
[[Comma list]]: 225/224, 245/243 | |||
{{Mapping|legend=2| 1 0 2 -1 | 0 5 3 6 }} | |||
: sval mapping generators: ~2, ~14/9 | |||
{{Mapping|legend=3| 1 5/2 5/2 5 | 0 -5/2 -1/2 -6 }} | |||
: [[gencom]]: [2 9/7; 225/224 245/243] | |||
[[Optimal tuning]] ([[Tp tuning|subgroup POTE]]): ~2 = 1\1, ~14/9 = 760.704 | |||
{{Optimal ET sequence|legend=1| 8, 11, 30, 41, 71, 93, 112c, 134c, 175c }} | |||
[[Tp tuning #T2 tuning|RMS error]]: 1.074 cents | |||
==== 2.9.15.7.11 ==== | |||
Subgroup: 2.9.15.7.11 | |||
Comma list: 100/99, 225/224, 245/243 | |||
Sval mapping: {{mapping| 1 0 2 | |||