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 harmonic 3. 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.  
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


=== 13-limit ===
==== Trisey ====
Subgroup: 2.3.5.7.11.13
Subgroup: 2.3.5.7.11.13


Comma list: 176/175, 325/324, 640/637, 833/825
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)
* POTE: ~55/48 = 1\5, ~11/8 = 555.261 (~25/24 = 75.261)
* CWE: ~55/48 = 1\5, ~11/8 = 555.1626 (~25/24 = 75.261)


{{Optimal ET sequence|legend=1| 15, 80, 175bcde, 255bcdde }}
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 ==