No-threes subgroup temperaments: Difference between revisions

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== 2.5.7 temperaments ==
== 2.5.7 temperaments ==
=== Didacus ===
=== Didacus ===
{{See also| Hemimean clan #Didacus }}
{{See also| Hemimean clan #Didacus }}
Related temperaments: [[Chromatic pairs #Roulette|roulette]], [[Gamelismic clan #Hemithirds|hemithirds]]
[[Subgroup]]: 2.5.7
[[Comma list]]: 3136/3125
[[Sval]] [[mapping]]: [{{val| 1 2 2 }}, {{val| 0 2 5 }}]
[[Gencom]]: [2 28/25; 3136/3125]
[[Gencom]] [[mapping]]: [{{val| 1 0 2 2 }}, {{val| 0 0 2 5 }}]
Optimal tuning ([[POTE]]): ~28/25 = 93.772
{{Optimal ET sequence|legend=1| 6, 19, 25, 31, 37, 99, 130, 161, 353 }}
[[Tp tuning #T2 tuning|RMS error]]: 0.2138 cents


=== Rainy ===
=== Rainy ===
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=== Bastille ===
=== Bastille ===
{{Main|Bastille}}
{{Main| Bastille }}
 
Described as the 2.5.7 subgroup 1407 & 1789 temperament, and named after an eponymous historical event which took place on July 14, 1789 (14/07/1789). Extensions discussed elsewhere include [[The Jacobins#Pure Bastille|pure bastille]].
Described as the 2.5.7 subgroup 1407 & 1789 temperament, and named after an eponymous historical event which took place on July 14, 1789 (14/07/1789). Extensions discussed elsewhere include [[The Jacobins#Pure Bastille|pure bastille]].


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{{Optimal ET sequence|legend=1| 6, 23de, 29, 35, 41 }}
{{Optimal ET sequence|legend=1| 6, 23de, 29, 35, 41 }}


=== Llywelyn aka shoe ===
=== Llywelyn a.k.a. shoe ===
{{See also| Chromatic pairs #Shoe }}
{{See also| Llywelynsmic clan #Llywelyn a.k.a. shoe }}
{{See also| Llywelyn clan #Llywelyn aka shoe }}
 
[[Subgroup]]: 2.5.7
 
[[Comma list]]: 4194304/4117715
 
[[Sval]] [[mapping]]: [{{Val| 1 1 3 }}, {{Val| 0 7 -1 }}]
 
Mapping generators: 2, ~8/7
 
[[Gencom]] [[mapping]]: [{{Val| 1 0 1 3 }}, {{Val| 0 0 7 -1 }}]
 
[[Gencom]]: [2 8/7; 4194304/4117715]
 
[[Optimal tuning]] ([[POTE]]): ~8/7 = 226.910
 
{{Optimal ET sequence|legend=1| 5, 11c, 16, 21, 37 }}
 
==== 2.5.7.11 subgroup ====
Subgroup: 2.5.7.11
 
Comma list: 176/175, 1310720/1294139
 
Sval mapping: [{{val| 1 1 3 1 }}, {{val| 0 7 -1 13 }}]
 
Gencom: [2 8/7; 176/175 1310720/1294139]
 
Gencom mapping: [{{val| 1 0 1 3 1 }}, {{val| 0 0 7 -1 13 }}]
 
Optimal tuning (POTE): ~8/7 = 227.114
 
{{Optimal ET sequence|legend=1| 16, 21, 37 }}
 
==== 2.5.7.11.13 subgroup ====
Subgroup: 2.5.7.11.13
 
Comma list: 176/175, 640/637, 847/845
 
Sval mapping: [{{val| 1 1 3 1 2 }}, {{val| 0 7 -1 13 9 }}]
 
Gencom: [2 8/7; 176/175 640/637, 1304576/1294139]
 
Gencom mapping: [{{val| 1 0 1 3 1 2 }}, {{val| 0 0 7 -1 13 9 }}]
 
Optimal tuning (POTE): ~8/7 = 227.108
 
{{Optimal ET sequence|legend=1| 16, 21, 37 }}
 
==== 2.5.7.11.13.17 subgroup ====
Subgroup: 2.5.7.11.13.17
 
Comma list: 176/175, 221/200, 640/637, 833/832
 
Sval mapping: [{{val| 1 1 3 1 2 2 }}, {{val| 0 7 -1 13 9 11 }}]
 
Gencom: [2 8/7; 176/175 221/200, 640/637, 833/832]
 
Gencom mapping: [{{val| 1 0 1 3 1 2 2 }}, {{val| 0 0 7 -1 13 9 11 }}]
 
Optimal tuning (POTE): ~8/7 = 227.242
 
{{Optimal ET sequence|legend=1| 16, 21, 37 }}


=== French decimal ===
=== French decimal ===
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=== Vengeance ===
=== Vengeance ===
''Main article: [[vengeance]]''<br><br>
{{Main| Vengeance }}


Another lower-error replica of mavila, with the fifth being ~[[25/17]] instead of ~[[3/2]].
Another lower-error replica of mavila, with the fifth being ~[[25/17]] instead of ~[[3/2]].