Diminished family: Difference between revisions
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{{Technical data page}} | |||
The '''diminished family''' of [[regular temperament|temperaments]] [[tempering out|tempers out]] the major diesis a.k.a. diminished comma, [[648/625]], the amount by which four [[6/5]] minor thirds exceed an [[octave]], and so identifies the minor third with the quarter-octave. Hence it has the same 300-cent 6/5-approximations as [[12edo]]. | |||
== Diminished == | |||
{{Main| Diminished (temperament) }} | |||
The [[generator]] of diminished can be taken as a fifth or a semitone, and 12edo, with its excellent fifth, is an obvious tuning, though a flatter fifth might be preferred to go with the flat minor third. Its [[ploidacot]] is tetraploid monocot. | |||
[[Subgroup]]: 2.3.5 | |||
[[Comma list]]: 648/625 | |||
= | {{Mapping|legend=1| 4 0 3 | 0 1 1 }} | ||
[[Optimal tuning]]s: | |||
* [[WE]]: ~6/5 = 299.6476{{c}}, ~3/2 = 698.6854{{c}} (~25/24 = 99.3903{{c}}) | |||
: [[error map]]: {{val| -1.410 -4.679 +9.905 }} | |||
* [[CWE]]: ~6/5 = 300.0000{{c}}, ~3/2 = 698.2660{{c}} (~25/24 = 98.2660{{c}}) | |||
: error map: {{val| 0.000 -3.689 +11.952 }} | |||
{{Optimal ET sequence|legend=1| 4, 8, 12 }} | |||
[[Badness]] (Sintel): 1.11 | |||
== Septimal diminished == | |||
{{Main| Diminished (temperament) }} | |||
[[Subgroup]]: 2.3.5.7 | |||
[[Comma list]]: 36/35, 50/49 | |||
{{Mapping|legend=1| 4 0 3 5 | 0 1 1 1 }} | |||
[[Optimal tuning]]s: | |||
* [[WE]]: ~6/5 = 299.0347{{c}}, ~3/2 = 697.2727{{c}} (~21/20 = 99.2032{{c}}) | |||
: [[error map]]: {{val| -3.861 -8.543 +4.202 +19.759 }} | |||
* [[CWE]]: ~6/5 = 300.0000{{c}}, ~3/2 = 695.9619{{c}} (~21/20 = 95.9619{{c}}) | |||
: error map: {{val| 0.000 -5.993 +9.648 +27.136 }} | |||
{{Optimal ET sequence|legend=1| 4, 8d, 12 }} | |||
[[Badness]] (Sintel): 0.567 | |||
=== 11-limit === | |||
Subgroup: 2.3.5.7.11 | |||
Comma list: 36/35, 50/49, 56/55 | |||
Mapping: {{mapping| 4 0 3 5 14 | 0 1 1 1 0 }} | |||
Optimal tunings: | |||
* WE: ~6/5 = 297.8458{{c}}, ~3/2 = 703.9277{{c}} (~15/14 = 108.2361{{c}}) | |||
* CWE: ~6/5 = 300.0000{{c}}, ~3/2 = 703.5558{{c}} (~15/14 = 103.5558{{c}}) | |||
{{Optimal ET sequence|legend=0| 4, 8d, 12, 32cddee, 44cddeee }} | |||
Badness (Sintel): 0.732 | |||
==== 13-limit ==== | |||
Subgroup: 2.3.5.7.11.13 | |||
Comma list: 36/35, 40/39, 50/49, 66/65 | |||
Mapping: {{mapping| 4 0 3 5 14 15 | 0 1 1 1 0 0 }} | |||
Optimal tunings: | |||
* WE: ~6/5 = 297.2520{{c}}, ~3/2 = 707.2352{{c}} (~15/14 = 112.7312{{c}}) | |||
* CWE: ~6/5 = 300.0000{{c}}, ~3/2 = 708.4648{{c}} (~15/14 = 108.4648{{c}}) | |||
{{Optimal ET sequence|legend=0| 4, 8d, 12f, 20cdef, 32cddeefff }} | |||
Badness (Sintel): 0.806 | |||
Badness: | === Demolished === | ||
Subgroup: 2.3.5.7.11 | |||
Comma list: 36/35, 45/44, 50/49 | |||
Mapping: {{mapping| 4 0 3 5 -5 | 0 1 1 1 3 }} | |||
Optimal tunings: | |||
* WE: ~6/5 = 299.6308{{c}}, ~3/2 = 689.0322{{c}} (~21/20 = 89.7707{{c}}) | |||
Badness: | * CWE: ~6/5 = 300.0000{{c}}, ~3/2 = 688.9304{{c}} (~21/20 = 88.9304{{c}}) | ||
{{Optimal ET sequence|legend=0| 4e, 8dee, 12, 28 }} | |||
Badness (Smith): 0.879 | |||
=== Cohedim === | |||
This extension has been documented in Graham Breed's temperament finder as ''hemidim'', the same name as [[#Hemidim|11-limit 4e & 24 and 13-limit 4ef & 24]]. For the 11-limit 8bce & 12 temperament, ''cohedim'' arguably makes more sense. Its ploidacot is tetraploid alpha-dicot. | |||
Badness: | Subgroup: 2.3.5.7.11 | ||
Comma list: 36/35, 50/49, 125/121 | |||
Mapping: {{mapping| 4 1 4 6 6 | 0 2 2 2 3 }} | |||
: mapping generators: ~6/5, ~11/7 | |||
Optimal tunings: | |||
* WE: ~6/5 = 298.7799{{c}}, ~11/7 = 795.0744{{c}} (~12/11 = 101.2653{{c}}) | |||
* CWE: ~6/5 = 300.0000{{c}}, ~11/7 = 796.0102{{c}} (~12/11 = 103.9898{{c}}) | |||
{{Optimal ET sequence|legend=0| 8bce, 12 }} | |||
Badness (Sintel): 1.82 | |||
==== 13-limit ==== | |||
Subgroup: 2.3.5.7.11.13 | |||
Comma list: 36/35, 50/49, 66/65, 125/121 | |||
Mapping: {{mapping| 4 1 4 6 6 7 | 0 2 2 2 3 3 }} | |||
Optimal tunings: | |||
* WE: ~6/5 = 298.4646{{c}}, ~11/7 = 793.6185{{c}} (~12/11 = 101.7754{{c}}) | |||
* CWE: ~6/5 = 300.0000{{c}}, ~11/7 = 794.7323{{c}} (~12/11 = 105.2677{{c}}) | |||
{{Optimal ET sequence|legend=0| 8bcef, 12f }} | |||
Badness (Sintel): 1.72 | |||
== Hemidim == | |||
Hemidim tempers out 49/48 and may be described as the {{nowrap| 4 & 24 }} temperament. Its ploidcot is tetraploid dicot. | |||
[[Subgroup]]: 2.3.5.7 | |||
[[Comma list]]: 49/48, 648/625 | |||
{{Mapping|legend=1| 4 0 3 8 | 0 2 2 1 }} | |||
: mapping generators: ~6/5, ~7/4 | |||
[[Optimal tuning]]s: | |||
* [[WE]]: ~6/5 = 300.5053{{c}}, ~7/4 = 949.0409{{c}} (~36/35 = 47.5250{{c}}) | |||
: [[error map]]: {{val| +2.021 -3.873 +13.284 -15.743 }} | |||
* [[CWE]]: ~6/5 = 300.0000{{c}}, ~7/4 = 948.2575{{c}} (~36/35 = 48.2575{{c}}) | |||
: error map: {{val| 0.000 -5.440 +10.201 -20.568 }} | |||
{{Optimal ET sequence|legend=1| 4, …, 20c, 24 }} | |||
[[Badness]] (Sintel): 2.19 | |||
=== 11-limit === | |||
Subgroup: 2.3.5.7.11 | |||
Comma list: 49/48, 77/75, 243/242 | |||
Mapping: {{mapping| 4 0 3 8 -2 | 0 2 2 1 5 }} | |||
Optimal tunings: | |||
* WE: ~6/5 = 300.4282{{c}}, ~7/4 = 949.6958{{c}} (~36/35 = 48.4112{{c}}) | |||
* CWE: ~6/5 = 300.0000{{c}}, ~7/4 = 948.9065{{c}} (~36/35 = 48.9065{{c}}) | |||
{{Optimal ET sequence|legend=0| 4e, 20ce, 24 }} | |||
Badness (Sintel): 1.87 | |||
=== 13-limit === | |||
Subgroup: 2.3.5.7.11.13 | |||
Comma list: 49/48, 66/65, 77/75, 243/242 | |||
Mapping: {{mapping| 4 0 3 8 -2 -1 | 0 2 2 1 5 5 }} | |||
Optimal tunings: | |||
* WE: ~6/5 = 300.4282{{c}}, ~7/4 = 949.2440{{c}} (~36/35 = 47.8487{{c}}) | |||
* CWE: ~6/5 = 300.0000{{c}}, ~7/4 = 948.3581{{c}} (~36/35 = 48.3581{{c}}) | |||
{{Optimal ET sequence|legend=0| 4ef, 24 }} | |||
Badness (Sintel): 1.61 | |||
== Octonion == | |||
Octonion tempers out 245/243, and may be described as the {{nowrap| 8d & 24 }} temperament. Its ploidacot is octoploid monocot. | |||
It was formerly known as ''semidim'' but renamed to avoid confusion with another temperament of the same name. | |||
[[Subgroup]]: 2.3.5.7 | |||
[[Comma list]]: 245/243, 392/375 | |||
{{Mapping|legend=1| 8 0 6 -3 | 0 1 1 2 }} | |||
: mapping generators: ~15/14, ~3 | |||
[[Optimal tuning]]s: | |||
* [[WE]]: ~15/14 = 149.6673{{c}}, ~3/2 = 705.4455{{c}} (~36/35 = 42.8910{{c}}) | |||
: [[error map]]: {{val| -2.662 +0.828 +14.474 -12.260 }} | |||
* [[CWE]]: ~15/14 = 150.0000{{c}}, ~3/2 = 704.9636{{c}} (~36/35 = 45.0364{{c}}) | |||
: error map: {{val| 0.000 +3.008 +18.650 -8.899 }} | |||
{{Optimal ET sequence|legend=1| 8d, 16d, 24, 32c }} | |||
[[Badness]] (Sintel): 2.72 | |||
=== 11-limit === | |||
Subgroup: 2.3.5.7.11 | |||
Comma list: 56/55, 77/75, 245/243 | |||
Mapping: {{mapping| 8 0 6 -3 15 | 0 1 1 2 1 }} | |||
Optimal tunings: | |||
* WE: ~12/11 = 149.7102{{c}}, ~3/2 = 705.2799{{c}} (~36/35 = 43.2712{{c}}) | |||
* CWE: ~12/11 = 150.0000{{c}}, ~3/2 = 704.9285{{c}} (~36/35 = 45.0715{{c}}) | |||
{{Optimal ET sequence|legend=0| 8d, 16d, 24, 32c }} | |||
Badness (Sintel): 1.57 | |||
=== 13-limit === | |||
Subgroup: 2.3.5.7.11.13 | |||
Comma list: 56/55, 66/65, 77/75, 507/500 | |||
Mapping: {{mapping| 8 0 6 -3 15 17 | 0 1 1 2 1 1 }} | |||
Optimal tunings: | |||
* WE: ~12/11 = 149.6311{{c}}, ~3/2 = 705.6367{{c}} (~36/35 = 42.5188{{c}}) | |||
* CWE: ~12/11 = 150.0000{{c}}, ~3/2 = 705.2777{{c}} (~36/35 = 44.7223{{c}}) | |||
{{Optimal ET sequence|legend=0| 8d, 16d, 24, 32cf }} | |||
Badness (Sintel): 1.26 | |||
[[Category:Temperament families]] | |||
[[Category:Pages with mostly numerical content]] | |||
[[Category:Diminished family| ]] <!-- main article --> | |||
[[Category:Diminished| ]] <!-- key article --> | |||
[[Category:Rank 2]] |