Trisedodge family: Difference between revisions
→Coblack: +wedgie, copypasted from cloudy clan |
Per discussion on the Discord server, we noted two competing 13-limit extensions |
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== Trisedodge == | == Trisedodge == | ||
The generator of trisedodge is ~864/625 at around 554 cents, which in all 11-limit extensions is used to represent [[11/8]], and three of them and a period is equal to | The generator of trisedodge is ~864/625 at around 554 cents, which in all 11-limit extensions is used to represent [[11/8]], and three of them and a period is equal to [[3/1]]. This generator, when reduced to the minimal size, represents [[25/24]]. However, another possible generator is ~6/5, reached by a period plus 25/24, that is, (144/125)(25/24) = 6/5. | ||
In the 11-limit the generator can be taken to be ~11/10, reached as a period minus 25/24, that is, (55/48)/(25/24) = 11/10. Therefore, since a period plus a gen is 6/5 and a period minus a gen is 11/10, we reach 12/11 at 2 gens. | In the 11-limit the generator can be taken to be ~11/10, reached as a period minus 25/24, that is, (55/48)/(25/24) = 11/10. Therefore, since a period plus a gen is 6/5 and a period minus a gen is 11/10, we reach 12/11 at 2 gens. | ||
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Badness: 0.043508 | Badness: 0.043508 | ||
=== | ==== Trisey ==== | ||
Subgroup: 2.3.5.7.11.13 | Subgroup: 2.3.5.7.11.13 | ||
Comma list: 176/175, 325/324, 640/637 | Comma list: 176/175, 325/324, 364/363, 640/637 | ||
Mapping: {{mapping| 5 1 7 21 15 0 | 0 3 2 -3 1 8 }} | Mapping: {{mapping| 5 1 7 21 15 0 | 0 3 2 -3 1 8 }} | ||
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Optimal tunings: | Optimal tunings: | ||
* CTE: ~55/48 = 1\5, ~11/8 = 554.7405 (~25/24 = 74.7405) | * CTE: ~55/48 = 1\5, ~11/8 = 554.7405 (~25/24 = 74.7405) | ||
* | * CWE: ~55/48 = 1\5, ~11/8 = 555.1626 (~25/24 = 75.261) | ||
{{Optimal ET sequence | Optimal ET sequence: {{Optimal ET sequence| 15, 80, 175bcde, 255bcdde }} | ||
Badness: 0.0380 | Badness: 0.0380 | ||
==== Dodgy ==== | |||
Subgroup: 2.3.5.7.11.13 | |||
Comma list: 176/175, 351/350, 1040/1029, 1331/1323 | |||
Mapping: {{mapping| 5 1 7 21 15 37 | 0 3 2 -3 1 -8 }} | |||
Optimal tunings: | |||
* CTE: ~55/48 = 1\5, ~11/8 = 554.6802 (~25/24 = 74.6802) | |||
* CWE: ~55/48 = 1\5, ~11/8 = 554.6627 (~25/24 = 74.6627) | |||
Optimal ET sequence: {{Optimal ET sequence| 15f, 50df, 65d, 80, 145d }} | |||
Badness: 0.0446 | |||
== Coblack == | == Coblack == |