User:VIxen/Sandbox

Revision as of 16:32, 22 June 2022 by VIxen (talk | contribs) (Gersemi: confused the badnesses of the 13-limit extensions)

Wizmic family

These are rank-3 temperaments where the wizma 420175/419904 is tempered out. For the clan of rank-2 temperaments with this comma, see Wizmic microtemperaments.

Wizmic

Subgroup: 2.3.5.7

Comma list: 420175/419904

Mapping: [1 0 3 0], 0 1 4 0], 0 0 -5 2]]

Mapping generators: ~2, ~3, ~648/245

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Badness: 0.0864 × 10-3

Gersemi

Subgroup: 2.3.5.7.11

Comma list: 9801/9800, 41503/41472

Mapping: [2 0 1 2 6], 0 1 4 0 2], 0 0 -5 2 -3]]

Mapping generators: ~99/70, ~3, ~144/77

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Badness: 0.368 × 10-3

13-limit

Subgroup: 2.3.5.7.11.13

Comma list: 1716/1715, 2080/2079, 17303/17280

Mapping: [2 0 1 2 6 -3], 0 1 4 0 2 1], 0 0 -5 2 -3 4]]

Mapping generators: ~99/70, ~3, ~144/77

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Badness: 0.867 × 10-3

13-limit (schisminic branch)

Subgroup: 2.3.5.7.11.13

Comma list: 4096/4095, 9801/9800, 41503/41472

Mapping: [2 0 1 2 6 21], 0 1 4 0 2 -6], 0 0 -5 2 -3 3]]

Mapping generators: ~99/70, ~3, ~144/77

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Badness: 1.56 × 10-3

Skeetsmic family

These are rank-3 temperaments where the skeetsma is tempered out.

Skeetsmic

Subgroup: 2.3.5.7

Comma list: 14348907/14336000

Mapping: [1 0 0 -14], 0 1 0 15], 0 0 1 -3]]

Mapping generators: ~2, ~3, ~5

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Badness: 0.333 × 10-3

Skald

Subgroup: 2.3.5.7.11

Comma list: 9801/9800, 1240029/1239040

Mapping: [2 0 1 -28 -25], 0 1 0 15 13], 0 0 1 -3 -2]]

Mapping generators: ~99/70, ~3, ~5

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Badness: 3.20 × 10-3

13-limit

Subgroup: 2.3.5.7.11.13

Comma list: 9801/9800, 10648/10647, 59535/59488

Mapping: [2 0 1 -31 -27 -22], 0 1 0 15 13 11], 0 0 2 -6 -4 -3]]

Mapping generators: ~99/70, ~3, ~220/117

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Badness: 1.31 × 10-3

Other from the kalismic family

Rishi

The 7-limit comma [65 -84 10 16⟩ ~ 0.13c has the ratio of the exponents of 3 and 2 that is close to the one in 81/8. The square root of the latter is close to 35/11. This suggests tempering out (81/8)(35/11)-2, which is the kalisma.

Apart from 35/11, 35/33, and the equivalents of their squares, 81/8 and 9/8, another equave that comes to mind is 3/2, especially after tempering out the chalmersia. When 3/2 is chosen as the equave, Fokker blocks of 34 pitches per equave can be used that are close to 34edf and 58edo.

Subgroup: 2.3.5.7.11

Comma list: 9801/9800, 572145834917888/571919811374025

Mapping: [2 0 3 -10 -4], 0 1 2 4 4], 0 0 8 -5 3]]

Mapping generators: ~99/70, ~3, ~17364375/14172488

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Badness: 2.10 × 10-3

13-limit

Subgroup: 2.3.5.7.11.13

Comma list: 9801/9800, 10648/10647, 371293/371250

Mapping: [2 0 3 -10 -4 2], 0 1 2 4 4 3], 0 0 8 -5 3 7]]

Mapping generators: ~99/70, ~3, ~364/297

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Badness: 0.505 × 10-3