15th-octave temperaments: Difference between revisions
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added pentadecal |
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[[Badness]] (Smith): 0.028944 | [[Badness]] (Smith): 0.028944 | ||
== Pentadecal == | |||
Subgroup: 2.3.5 | |||
[[Comma]]: 30517578125/29386561536 | |||
[[Mapping]]: [{{Val| 15 0 11 }}, {{Val| 0 1 1 }}] | |||
[[POTE generator]]: ~3/2 = 702.652 | |||
{{Optimal ET sequence|legend=1| 15, 45, 60, 75, 135, 210c, 345cc }} | |||
[[Badness]]: 0.692042 | |||
=== 7-limit === | |||
The ''pentadecal'' temperament tempers out the 15-5/3-comma (Quintriyo, pentadecatonic minor thirds comma), {{monzo|-11 -15 15}}. This temperament can be described as 15&60 temperament, tempering out the [[cloudy comma]], 16807/16384 and the [[875/864|keema]], 875/864 in the 7-limit. | |||
[[Subgroup]]: 2.3.5.7 | |||
[[Comma list]]: 875/864, 16807/16384 | |||
{{Mapping|legend=1| 15 0 11 42 | 0 1 1 0 }} | |||
: mapping generators: ~21/20, ~3 | |||
[[Optimal tuning]] ([[POTE]]): ~21/20 = 1\15, ~3/2 = 700.223 (~126/125 = 19.777) | |||
{{Optimal ET sequence|legend=1| 15, 45, 60 }} | |||
[[Badness]]: 0.114833 | |||
=== 11-limit === | |||
Subgroup: 2.3.5.7.11 | |||
Comma list: 100/99, 385/384, 1372/1331 | |||
Mapping: {{mapping| 15 0 11 42 52 | 0 1 1 0 0 }} | |||
: mapping generators: ~21/20, ~3 | |||
Optimal tuning (POTE): ~21/20 = 1\15, ~3/2 = 702.733 (~56/55 = 17.267) | |||
{{Optimal ET sequence|legend=1| 15, 45, 60, 75de, 135de }} | |||
Badness: 0.077420 | |||
==== 13-limit ==== | |||
Subgroup: 2.3.5.7.11.13 | |||
Comma list: 100/99, 105/104, 144/143, 1372/1331 | |||
Mapping: {{mapping| 15 0 11 42 52 8 | 0 1 1 0 0 2 }} | |||
: mapping generators: ~21/20, ~3 | |||
Optimal tuning (POTE): ~21/20 = 1\15, ~3/2 = 701.715 (~91/90 = 18.285) | |||
{{Optimal ET sequence|legend=1| 15, 45f, 60, 135de, 195cddee }} | |||
Badness: 0.051740 | |||
=== Quindecal === | |||
Subgroup: 2.3.5.7.11 | |||
Comma list: 121/120, 441/440, 875/864 | |||
Mapping: {{mapping| 15 0 11 42 28 | 0 1 1 0 1 }} | |||
: mapping generators: ~21/20, ~3 | |||
Optimal tuning (POTE): ~21/20 = 1\15, ~3/2 = 700.318 (~126/125 = 19.682) | |||
{{Optimal ET sequence|legend=1| 15, 45e, 60e }} | |||
Badness: 0.044405 | |||
==== 13-limit ==== | |||
Subgroup: 2.3.5.7.11.13 | |||
Comma list: 121/120, 196/195, 352/351, 875/864 | |||
Mapping: {{mapping| 15 0 11 42 28 103 | 0 1 1 0 1 -2 }} | |||
: mapping generators: ~21/20, ~3 | |||
Optimal tuning (POTE): ~21/20 = 1\15, ~3/2 = 701.647 (~65/64 = 18.353) | |||
{{Optimal ET sequence|legend=1| 15f, 45e, 60e }} | |||
Badness: 0.055361 | |||
{{Fractional-octave footer}} | {{Fractional-octave footer}} | ||