Fractional-octave temperaments: Difference between revisions

Line 360: Line 360:


Badness: 0.036267
Badness: 0.036267
==80th-octave temperaments==
== 80th-octave temperaments ==
=== Mercury ===
=== Mercury ===
Defined as 720 & 1600, and named after the 80th element, because a simpler temperament is already named octogintic.
Mercury is described as 720 & 1600, and named after the 80th element, as a simpler temperament is already named octogintic.


Subgroup: 2.3.5
[[Subgroup]]: 2.3.5.7


Comma list: {{monzo|-1377 400 320}}
[[Comma list]]: {{monzo| -52 17 12 -1 }}, {{monzo| 25 42 -8 -26 }}


Mapping: [{{val|80 1 343}}, {{val|0 4 -5}}]
[[Mapping]]: [{{val| 80 1 343 -27 }}, {{val| 0 4 -5 8 }}]


Mapping generators: {{monzo|-568 165 132}}, {{monzo|142 -41 -33}}
Mapping generators: ~31637227888/31381059609, ~7381125/5619712
 
Optimal tuning (CTE): ~{{monzo|142 -41 -33}} = 471.738
 
==== 7-limit ====
Subgroup: 2.3.5.7


Comma list: 31528360107421875/31525197391593472, 3671492030322070514237964288/3666984506893654025644140625
[[Optimal tuning]] ([[CTE]]): ~7381125/5619712 = 471.7339


Mapping:[{{val| 80 1 343 -27}}, {{val|0 4 -5 8}}]
{{Val list|legend=1| 720, 1600, 2320, 3920 }}


Mapping generators: ~31637227888/31381059609, ~7381125/5619712
[[Badness]]: 1.49
 
Optimal tuning (CTE): ~7381125/5619712 = 471.734


==== 11-limit ====
==== 11-limit ====
Subgroup: 2.3.5.7.11
Subgroup: 2.3.5.7.11


Comma list: 9801/9800, 928760463360/928426965851, 68116944363978752/68116827392578125
Comma list: 9801/9800, 928760463360/928426965851, {{monzo| 49 -13 -14 -1 2 }}


Mapping:[{{val|80 1 343 -27 434}}, {{val|0 4 -5 8 5}}]
Mapping: [{{val| 80 1 343 -27 434 }}, {{val| 0 4 -5 8 -5 }}]


Mapping generators: ~262144/259875, ~2278125/1734656
Optimal tuning (CTE): ~2278125/1734656 = 471.7342


Optimal tuning (CTE): ~2278125/1734656 = 471.734
Optimal GPV sequence: {{Val list| 720, 1600, 2320, 3920 }}
 
Badness: 0.178


==== 13-limit ====
==== 13-limit ====
Line 401: Line 396:
Comma list: 9801/9800, 4100625/4100096, 14236560/14235529, 143327232/143286143
Comma list: 9801/9800, 4100625/4100096, 14236560/14235529, 143327232/143286143


Mapping: [{{val|80 1 343 -27 434 13}}, {{val|0 4 -5 8 5 9}}]
Mapping: [{{val| 80 1 343 -27 434 13 }}, {{val| 0 4 -5 8 -5 9 }}]
 
Optimal tuning (CTE): ~130/99 = 471.7322


Mapping generators: ~77760/77077, ~130/99
Optimal GPV sequence: {{Val list| 720, 1600, 2320, 3920 }}


Optimal tuning (CTE): ~130/99 = 471.734
Badness: 0.0741


== 91st-octave temperaments ==
== 91st-octave temperaments ==