Augmented family: Difference between revisions

Overthink (talk | contribs)
Trug: extend to 11-limit via 56/55
Overthink (talk | contribs)
Trisected: + subgroup temperaments
 
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Badness (Sintel): 2.67
Badness (Sintel): 2.67
== Trisected ==
{{Main|Trisected}}
{{See also|Subgroup temperaments #Trisect}}
Trisected tempers out [[1029/1024]] and [[1029/1000]], so it is the intersection of augmented and [[slendric]]. It can be described as the {{nowrap| 15 & 36 }} temperament.
It was named by [[User:Overthink|Overthink]] in 2026, since it splits every Pythagorean interval in three.
[[Subgroup]]: 2.3.5.7
[[Comma list]]: 128/125, 1029/1000
{{Mapping|legend=1| 3 0 7 10 | 0 3 0 -1 }}
: mapping generators: ~5/4, ~10/7
[[Optimal tuning]]s:
* [[WE]]: ~5/4 = 399.5199{{c}}, ~10/7 = 633.7146{{c}}
: [[error map]]: {{val| -1.440 -0.811 +10.325 -7.342 }}
* [[CWE]]: ~5/4 = 400.0000{{c}}, ~10/7 = 634.3393{{c}}
: error map: {{val| 0.000 +1.063 +13.686 -3.165 }}
{{Optimal ET sequence|legend=1| 15, 36, 51c }}
[[Badness]] (Sintel): 2.61
=== 11-limit ===
This extension also tempers out [[4000/3993]], equating 3 intervals of [[11/10]] with [[4/3]].
Subgroup: 2.3.5.7.11
Comma list: 56/55, 128/125, 1029/1000
Mapping: {{Mapping| 3 0 7 10 12 | 0 3 0 -1 -1 }}
Optimal tunings:
* WE: ~5/4 = 399.3049{{c}}, ~10/7 = 633.7891{{c}}
* CWE: ~5/4 = 400.0000{{c}}, ~10/7 = 634.7695{{c}}
{{Optimal ET sequence|legend=0| 15, 36, 51ce }}
Badness (Sintel): 1.60
=== 13-limit ===
This extension is natural since it equates the [[10/7]], which is 1/3 of [[3/1]] since 1029/1000 is tempered out, with [[13/9]], thus tempering out [[91/90]] and [[2197/2187]].
Subgroup: 2.3.5.7.11.13
Comma list: 56/55, 91/90, 128/125, 1029/1000
Mapping: {{Mapping| 3 0 7 10 12 0 | 0 3 0 -1 -1 7 }}
Optimal tunings:
* WE: ~5/4 = 399.3194{{c}}, ~10/7 = 634.0637{{c}}
* CWE: ~5/4 = 400.0000{{c}}, ~10/7 = 634.9907{{c}}
{{Optimal ET sequence|legend=0| 15, 36, 51ce }}
Badness (Sintel): 1.70


== Niner ==
== Niner ==
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{{Optimal ET sequence|legend=1| 3b, 9bd, 12 }}
{{Optimal ET sequence|legend=1| 3b, 9bd, 12 }}
[[Badness]] (Sintel): 3.50


=== 11-limit ===
=== 11-limit ===
{{Todo|unify precision}}
Subgroup: 2.3.5.7.11
Subgroup: 2.3.5.7.11


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Mapping: {{Mapping| 3 1 7 6 8 | 0 3 0 2 2 }}
Mapping: {{Mapping| 3 1 7 6 8 | 0 3 0 2 2 }}


: mapping generators: ~5/4, ~15/11
Optimal tunings:  
* WE: ~5/4 = 397.4954{{c}}, ~15/11 = 499.0962{{c}} (~15/14 = 101.6008{{c}})
* CWE: ~5/4 = 400.0000{{c}}, ~15/11 = 500.7745{{c}} (~15/14 = 100.7745{{c}})
 
{{Optimal ET sequence|legend=0| 3b, 9bde, 12 }}
 
Badness (Sintel): 2.60
 
== Subgroup extensions ==
=== Augmented (2.3.5.19 subgroup) ===
Augmented works on the [[2.3.5.19 subgroup]] very well, where the 1/3-octave period stands in for ~5/4, ~19/15, and ~24/19.
 
[[Subgroup]]: 2.3.5.19


Optimal tunings:  
[[Comma list]]: 76/75, 96/95
* WE: ~5/4 = 397.495{{c}}, ~15/11 = 499.096{{c}} (~15/14 = 101.601{{c}})
 
* CWE: ~5/4 = 400.000{{c}}, ~15/11 = 500.775{{c}} (~15/14 = 100.775{{c}})
{{Mapping|legend=2| 3 0 7 8 | 0 1 0 1 }}
 
[[Optimal tuning]]s:  
* [[WE]]: ~5/4 = 399.0754{{c}}, ~3/2 = 705.0615{{c}} (~19/18 = 93.0893{{c}})
* [[CWE]]: ~5/4 = 400.0000{{c}}, ~3/2 = 705.1072{{c}} (~19/18 = 94.8928{{c}})


{{Optimal ET sequence|legend=1| 3b, 9bde, 12 }}
{{Optimal ET sequence|legend=1| 3, 9, 12, 27, 39, 51c, 90cch }}


[[Badness]] (Sintel): 2.60
[[Badness]] (Sintel): 0.264


== External links ==
== External links ==