Vishnu family: Difference between revisions
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{{Technical data page}} | |||
The '''vishnu family''' [[tempering out|tempers out]] the [[vishnu comma]] ({{monzo|legend=1| 23 6 -14 }}, [[ratio]]: 6 115 295 232 / 6 103 515 625), an [[unnoticeable comma]] of about 3.34 [[cent]]s in size. | |||
: | |||
The | == Vishnu == | ||
The generator for the vishnu temperament is a [[25/24|classical chromatic semitone]], seven of which make a [[4/3|perfect fourth]], and [[5/4]] is found as a half-octave period minus three generators. Its [[ploidacot]] is diploid epsilon-heptacot. It is a member of the [[diaschismic–gothmic equivalence continuum]] with {{nowrap| ''n'' {{=}} 7/2 }}; thus it is most naturally used as a 34-form. | |||
[[Subgroup]]: 2.3.5 | |||
[[Comma list]]: 6115295232/6103515625 | |||
{{Mapping|legend=1| 2 4 5 | 0 -7 -3 }} | |||
: mapping generators: ~78125/55296, ~25/24 | |||
= | [[Optimal tuning]]s: | ||
* [[WE]]: ~78125/55296 = 599.9771{{c}}, ~25/24 = 71.1405{{c}} | |||
: [[error map]]: {{val| -0.046 -0.030 +0.150 }} | |||
* [[CWE]]: ~78125/55296 = 600.0000{{c}}, ~25/24 = 71.1482{{c}} | |||
: error map: {{val| 0.000 +0.007 +0.242 }} | |||
{{Optimal ET sequence|legend=1| 16, 34, 84, 118, 270, 388, 506, 894, 1400, 3306c, 4706cc }} | |||
[[Badness]] (Sintel): 0.731 | |||
== | === Overview to extensions === | ||
The second comma in the comma list defines which 7-limit family member we are looking at. Septimal vishnu (118 & 152) adds [[4375/4374]]. Narayana (84 & 118) adds [[65625/65536]]. Vishnean (16 & 50) adds [[126/125]]. There is also an unnamed 50 & 84 temperament, which tempers out [[225/224]]. These all use the same generators as classical vishnu. | |||
Trivish (84 & 186) adds [[250047/250000]], splitting the semi-octave period in three. Quarvish (68 & 270) adds [[2401/2400]], splitting the generator in four. Decavish (50 & 220) adds [[420175/419904]], splitting the semi-octave period in five. | |||
== Septimal vishnu == | |||
Septimal vishnu may be described as the {{nowrap| 118 & 152 }} temperament, tempering out 4375/4374, the [[ragisma]], and 29360128/29296875, the [[quasiorwellisma]], aside from the vishnu comma. [[270edo]] is an excellent tuning for this temperament, with generator 16\270 (71.{{overline|1}} cents), but it can be tuned to [[422edo]], [[692edo]], or [[962edo]]. It extends naturally to the [[11-limit]] by identifying a stack of four [[5/4]]'s as [[11/9]], tempering out [[5632/5625]]. | |||
[[Subgroup]]: 2.3.5.7 | |||
[[Comma list]]: 4375/4374, 29360128/29296875 | |||
{{Mapping|legend=1| 2 4 5 10 | 0 -7 -3 -37 }} | |||
[[Optimal tuning]]s: | |||
* [[WE]]: ~10125/7168 = 599.9486{{c}}, ~25/24 = 71.1014{{c}} | |||
: [[error map]]: {{val| -0.103 +0.129 +0.125 -0.092 }} | |||
* [[CWE]]: ~10125/7168 = 600.0000{{c}}, ~25/24 = 71.1106{{c}} | |||
: error map: {{val| 0.000 +0.271 +0.354 +0.081 }} | |||
{{Optimal ET sequence|legend=1| 34d, 84d, 118, 152, 270, 1232, 1502, 1772c, 2042bc, 2312bc, 2582bc, 4894bbccd }} | |||
[[Badness]] (Sintel): 1.06 | |||
= | === 11-limit === | ||
Subgroup: 2.3.5.7.11 | |||
Comma list: 3025/3024, 4375/4374, 5632/5625 | |||
Mapping: {{mapping| 2 4 5 10 10 | 0 -7 -3 -37 -26 }} | |||
Optimal tunings: | |||
* WE: ~99/70 = 599.9549{{c}}, ~25/24 = 71.0994{{c}} | |||
* CWE: ~99/70 = 600.0000{{c}}, ~25/24 = 71.1077{{c}} | |||
{{Optimal ET sequence|legend=0| 34d, 84de, 118, 152, 270, 962, 1232, 1502 }} | |||
Badness (Sintel): 0.469 | |||
==== Acyuta ==== | |||
Subgroup: 2.3.5.7.11.13 | |||
Comma list: 1716/1715, 2080/2079, 3025/3024, 5632/5625 | |||
Mapping: {{mapping| 2 4 5 10 10 17 | 0 -7 -3 -37 -26 -81 }} | |||
Optimal tunings: | |||
* WE: ~99/70 = 599.9475{{c}}, ~25/24 = 71.0947{{c}} | |||
* CWE: ~99/70 = 600.0000{{c}}, ~25/24 = 71.1028{{c}} | |||
{{Optimal ET sequence|legend=0| 118f, 152f, 270, 692, 962, 1654cd, 2616bcdf }} | |||
Badness (Sintel): 0.653 | |||
==== Ananta ==== | |||
Subgroup: 2.3.5.7.11.13 | |||
Comma list: 1001/1000, 3025/3024, 4096/4095, 4375/4374 | |||
Mapping: {{mapping| 2 4 5 10 10 1 | 0 -7 -3 -37 -26 54 }} | |||
Optimal tuning: | |||
* WE: ~99/70 = 599.9940{{c}}, ~25/24 = 71.1163{{c}} | |||
* CWE: ~99/70 = 600.0000{{c}}, ~25/24 = 71.1170{{c}} | |||
{{Optimal ET sequence|legend=0| 118, 152, 270, 928, 1198, 1468 }} | |||
Badness (Sintel): 0.978 | |||
== Narayana == | |||
Named by [[Xenllium]] in 2021, narayana tempers out 65625/65536, the [[horwell comma]], as well as 321489/320000, the [[varunisma]], and may be described as the {{nowrap| 84 & 118 }} temperament. | |||
[[Subgroup]]: 2.3.5.7 | |||
[[Comma list]]: 65625/65536, 321489/320000 | |||
Badness: 0. | |||
{{Mapping|legend=1| 2 4 5 3 | 0 -7 -3 22 }} | |||
[[Optimal tuning]]s: | |||
* [[WE]]: ~567/400 = 600.1141{{c}}, ~25/24 = 71.2783{{c}} | |||
: [[error map]]: {{val| +0.228 -0.447 +0.422 -0.362 }} | |||
* [[CWE]]: ~567/400 = 600.0000{{c}}, ~25/24 = 71.2659{{c}} | |||
: error map: {{val| 0.000 -0.816 -0.111 -0.976 }} | |||
Badness: 0. | {{Optimal ET sequence|legend=1| 34, 84, 118, 202, 320, 522 }} | ||
[[Badness]] (Sintel): 2.39 | |||
=== 11-limit === | |||
Subgroup: 2.3.5.7.11 | |||
Comma list: 441/440, 8019/8000, 65625/65536 | |||
Mapping: {{mapping| 2 4 5 3 3 | 0 -7 -3 22 33 }} | |||
Optimal tunings: | |||
* WE: ~99/70 = 600.0992{{c}}, ~25/24 = 71.2593{{c}} | |||
* CWE: ~99/70 = 600.0000{{c}}, ~25/24 = 71.2501{{c}} | |||
{{Optimal ET sequence|legend=0| 34e, 84, 118, 202, 320 }} | |||
Badness (Sintel): 1.52 | |||
== Vishnean == | |||
Named by [[Petr Pařízek]] in 2011<ref name="petr's long post">[https://yahootuninggroupsultimatebackup.github.io/tuning/topicId_101780.html Yahoo! Tuning Group | ''Suggested names for the unclasified temperaments'']</ref>, vishnean is a low-complexity low-accuracy extension of vishnu that tempers out 126/125, the [[starling comma]]. | |||
[[Subgroup]]: 2.3.5.7 | |||
[[Comma list]]: 126/125, 540225/524288 | |||
{{Mapping|legend=1| 2 4 5 5 | 0 -7 -3 5 }} | |||
[[Optimal tuning]]s: | |||
* [[WE]]: ~735/512 = 600.8754{{c}}, ~25/24 = 71.8834{{c}} | |||
: [[error map]]: {{val| +1.751 -1.637 +2.413 -5.031 }} | |||
* [[CWE]]: ~735/512 = 600.0000{{c}}, ~25/24 = 71.7141{{c}} | |||
: error map: {{val| 0.000 -3.954 -1.456 -10.255 }} | |||
{{Optimal ET sequence|legend=1| 16, 34, 50, 134dd }} | |||
[[Badness]] (Sintel): 4.08 | |||
=== 11-limit === | |||
Subgroup: 2.3.5.7.11 | |||
Comma list: 126/125, 385/384, 1350/1331 | |||
Mapping: {{mapping| 2 4 5 5 8 | 0 -7 -3 5 -9 }} | |||
Optimal tunings: | |||
* WE: ~63/44 = 600.7144{{c}}, ~25/24 = 72.0091{{c}} | |||
* CWE: ~63/44 = 600.0000{{c}}, ~25/24 = 71.8588{{c}} | |||
{{Optimal ET sequence|legend=0| 16, 34, 50 }} | |||
Badness (Sintel): 2.38 | |||
=== 13-limit === | |||
Subgroup: 2.3.5.7.11.13 | |||
Comma list: 105/104, 126/125, 144/143, 847/845 | |||
Mapping: {{mapping| 2 4 5 5 8 8 | 0 -7 -3 5 -9 -5 }} | |||
Optimal tunings: | |||
* WE: ~55/39 = 600.5983{{c}}, ~25/24 = 71.9975{{c}} | |||
* CWE: ~55/39 = 600.0000{{c}}, ~25/24 = 71.8699{{c}} | |||
{{Optimal ET sequence|legend=0| 16, 34, 50 }} | |||
Badness (Sintel): 1.68 | |||
== Trivish == | |||
Trivish tempers out 250047/250000, the [[landscape comma]], with a 1/6-octave period. It may be described as the {{nowrap| 84 & 186 }} temperament. It is more significant in the [[11-limit]], where it tempers out the [[kalisma]] and the [[olympia]]. In the [[13-limit]], the generator can be taken as a [[~]][[14/13]]. [[270edo]] is an obvious tuning for it, but it can be tuned to [[354edo]], [[624edo]] or [[894edo]]. It was named by [[Flora Canou]] in 2026 for the fact that it splits the period of vishnu in three. | |||
[[Subgroup]]: 2.3.5.7 | |||
[[Comma list]]: 250047/250000, 134217728/133984375 | |||
{{Mapping|legend=1| 6 5 12 22 | 0 7 3 -8 }} | |||
: mapping generators: ~18375/16384, ~2205/2048 | |||
[[Optimal tuning]]s: | |||
* [[WE]]: ~18375/16384 = 199.9885{{c}}, ~2205/2048 = 128.8583{{c}} | |||
: [[error map]]: {{val| -0.069 -0.005 +0.123 +0.054 }} | |||
* [[CWE]]: ~18375/16384 = 200.0000{{c}}, ~2205/2048 = 128.8643{{c}} | |||
: error map: {{val| 0.000 +0.095 +0.279 +0.256 }} | |||
{{Optimal ET sequence|legend=1| 84, 186, 270, 624, 894, 1164 }} | |||
[[Badness]] (Sintel): 1.51 | |||
=== 11-limit === | |||
Subgroup: 2.3.5.7.11 | |||
Comma list: 9801/9800, 131072/130977, 151263/151250 | |||
Mapping: {{mapping| 6 5 12 22 33 | 0 7 3 -8 -19 }} | |||
Optimal tunings: | |||
* WE: ~55/49 = 199.9885{{c}}, ~320/297 = 128.8582{{c}} | |||
* CWE: ~55/49 = 200.0000{{c}}, ~320/297 = 128.8661{{c}} | |||
{{Optimal ET sequence|legend=0| 84, 186, 270, 624, 894, 1164 }} | |||
Badness (Sintel): 0.807 | |||
=== 13-limit === | |||
Subgroup: 2.3.5.7.11.13 | |||
Comma list: 1716/1715, 2080/2079, 4096/4095, 34398/34375 | |||
Mapping: {{mapping| 6 5 12 22 33 28 | 0 7 3 -8 -19 -9 }} | |||
Optimal tunings: | |||
* WE: ~55/49 = 199.9922{{c}}, ~14/13 = 128.8565{{c}} | |||
* CWE: ~55/49 = 200.0000{{c}}, ~14/13 = 128.8621{{c}} | |||
{{Optimal ET sequence|legend=0| 84, 186, 270, 624, 894, 2058f }} | |||
Badness (Sintel): 0.791 | |||
=== 2.3.5.7.11.13.19 subgroup === | |||
Subgroup: 2.3.5.7.11.13.19 | |||
Comma list: 1521/1520, 1716/1715, 2080/2079, 2376/2375, 3250/3249 | |||
Mapping: {{mapping| 6 5 12 22 33 28 30 | 0 7 3 -8 -19 -9 -7 }} | |||
Optimal tunings: | |||
* WE: ~55/49 = 199.9909{{c}}, ~14/13 = 128.8564{{c}} | |||
* CWE: ~55/49 = 200.0000{{c}}, ~14/13 = 128.8630{{c}} | |||
{{Optimal ET sequence|legend=0| 84, 186, 270, 624, 894 }} | |||
Badness (Sintel): 0.591 | |||
== Quarvish == | |||
Quarvish tempers out 2401/2400, the [[breedsma]], and may be described as the {{nowrap| 68 & 270 }} temperament. | |||
[[Subgroup]]: 2.3.5.7 | |||
[[Comma list]]: 2401/2400, 6115295232/6103515625 | |||
{{Mapping|legend=1| 2 4 5 6 | 0 -28 -12 -13 }} | |||
: mapping generators: ~78125/55296, ~110592/109375 | |||
[[Optimal tuning]]s: | |||
* [[WE]]: ~78125/55296 = 599.9874{{c}}, ~110592/109375 = 17.7862{{c}} | |||
: [[error map]]: {{val| -0.025 -0.020 +0.189 -0.123 }} | |||
* [[CWE]]: ~78125/55296 = 600.0000{{c}}, ~110592/109375 = 17.7873{{c}} | |||
: error map: {{val| 0.000 +0.002 +0.239 -0.060 }} | |||
{{Optimal ET sequence|legend=1| 68, 134, 202, 270, 742, 1012 }} | |||
[[Badness]] (Sintel): 1.14 | |||
=== 11-limit === | |||
Subgroup: 2.3.5.7.11 | |||
Comma list: 2401/2400, 9801/9800, 172032/171875 | |||
Mapping: {{mapping| 2 4 5 6 6 | 0 -28 -12 -13 31 }} | |||
Optimal tunings: | |||
* WE: ~99/70 = 599.9884{{c}}, ~99/98 = 17.7865{{c}} | |||
* CWE: ~99/70 = 600.0000{{c}}, ~99/98 = 17.7870{{c}} | |||
{{Optimal ET sequence|legend=0| 68, 134, 202, 270, 742, 1012 }} | |||
Badness (Sintel): 0.657 | |||
== Decavish == | |||
Decavish tempers out the [[wizma]] as well as the [[linus comma]], and may be described as the {{nowrap| 50 & 220 }} temperament. It was named by [[Xenllium]] in 2021 for the fact that its period is 1/10 octave. | |||
[[Subgroup]]: 2.3.5.7 | |||
[[Comma list]]: 420175/419904, 2202927104/2197265625 | |||
{{Mapping|legend=1| 10 6 19 14 | 0 7 3 10 }} | |||
: mapping generators: ~15/14, ~54/49 | |||
[[Optimal tuning]]s: | |||
* [[WE]]: ~15/14 = 119.9957{{c}}, ~54/49 = 168.8645{{c}} (~36/35 = 48.8689{{c}}) | |||
: [[error map]]: {{val| -0.043 +0.071 +0.197 -0.242 }} | |||
* [[CWE]]: ~15/14 = 120.0000{{c}}, ~54/49 = 168.8658{{c}} (~36/35 = 48.8658{{c}}) | |||
: error map: {{val| 0.000 +0.106 +0.284 -0.168 }} | |||
{{Optimal ET sequence|legend=1| 50, …, 220, 270, 1400, 1670, 1940, 2210c, 2480c }} | |||
[[Badness]] (Sintel): 2.90 | |||
=== 11-limit === | |||
Subgroup: 2.3.5.7.11 | |||
Comma list: 9801/9800, 41503/41472, 172032/171875 | |||
Mapping: {{mapping| 10 6 19 14 36 | 0 7 3 10 -1 }} | |||
Optimal tunings: | |||
* WE: ~15/14 = 119.9997{{c}}, ~54/49 = 168.8587{{c}} (~36/35 = 48.8590{{c}}) | |||
* CWE: ~15/14 = 120.0000{{c}}, ~54/49 = 168.8589{{c}} (~36/35 = 48.8589{{c}}) | |||
{{Optimal ET sequence|legend=0| 50, …, 220, 270, 860, 1130, 1400 }} | |||
Badness (Sintel): 1.22 | |||
=== 13-limit === | |||
Subgroup: 2.3.5.7.11.13 | |||
Comma list: 1001/1000, 4225/4224, 4459/4455, 6656/6655 | |||
Mapping: {{mapping| 10 6 19 14 36 37 | 0 7 3 10 -1 0 }} | |||
Optimal tunings: | |||
* WE: ~15/14 = 120.0037{{c}}, ~54/49 = 168.8537{{c}} (~36/35 = 48.8500{{c}}) | |||
* CWE: ~15/14 = 120.0000{{c}}, ~54/49 = 168.8506{{c}} (~36/35 = 48.8506{{c}}) | |||
{{Optimal ET sequence|legend=0| 50, …, 220, 270, 590, 860, 1130 }} | |||
Badness (Sintel): 0.905 | |||
== References == | |||
<references/> | |||
[[Category:Vishnu family| ]] <!-- main article --> | |||
[[Category:Temperament families]] | |||
[[Category:Catalogs of rank-2 temperaments]] | |||