Tetracot family: Difference between revisions

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The parent of the '''tetracot family''' is [[tetracot]], the 5-limit temperament [[tempering out]] [[20000/19683]] = {{monzo| 5 -9 4 }}, the minimal diesis or tetracot comma. The dual of this comma is the wedgie {{multival| 4 9 5 }}, which tells us [[~]][[10/9]] is a generator, and that four of them give [[~]][[3/2]]. In fact, (10/9)<sup>4</sup> = 20000/19683 × 3/2. We also have (10/9)<sup>9</sup> = (20000/19683)<sup>2</sup> × 5/2. From this it is evident we should flatten the generator a bit, and [[34edo]] does this and makes for a recommendable tuning. Another possibility is to use (5/2)<sup>1/9</sup> for a generator. The 13-note [[mos]] gives enough space for eight triads, with the 20-note mos supplying many more.
{{Technical data page}}
 
The parent of the '''tetracot family''' is [[tetracot]], the [[5-limit]] [[regular temperament|temperament]] [[tempering out]] the [[tetracot comma]] ([[ratio]]: 20000/19683, {{monzo|legend=1| 5 -9 4 }}).  
The name comes from members of the Araucaria family of conifers, which have four cotyledons (though sometimes these are fused).


== Tetracot ==
== Tetracot ==
{{Main| Tetracot }}
{{Main| Tetracot }}
The [[generator]] of tetracot is [[~]][[10/9]], and that four of these give [[~]][[3/2]]. In fact, (10/9)<sup>4</sup> = (20000/19683)⋅(3/2). We also have (10/9)<sup>9</sup> = (20000/19683)<sup>2</sup>⋅(5/2). From this it is evident we should flatten the generator a bit, and [[34edo]] does this and makes for a recommendable tuning. Another possibility is to use (5/2)<sup>1/9</sup> for a generator. The 13-note [[mos]] gives enough space for eight triads, with the 20-note mos supplying many more.
The name comes from members of the Araucaria family of conifers, which have four cotyledons (though sometimes these are fused).


[[Subgroup]]: 2.3.5
[[Subgroup]]: 2.3.5
Line 10: Line 13:
[[Comma list]]: 20000/19683
[[Comma list]]: 20000/19683


[[Mapping]]: [{{val| 1 1 1 }}, {{val| 0 4 9 }}]
{{Mapping|legend=1| 1 1 1 | 0 4 9 }}


[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~10/9 = 176.160
[[Optimal tuning]]s:
* [[WE]]: ~2 = 1199.5586{{c}}, ~10/9 = 176.0950{{c}}
: [[error map]]: {{val| -0.441 +1.984 -1.900 }}
* [[CWE]]: ~2 = 1200.0000{{c}}, ~10/9 = 176.0965{{c}}
: error map: {{val| 0.000 +2.431 -1.445 }}


[[Minimax tuning]]:  
[[Minimax tuning]]:  
* [[5-odd-limit]]: ~10/9 = {{monzo| -1/9 0 1/9 }}
* [[5-odd-limit]]: ~10/9 = {{monzo| -1/9 0 1/9 }}
: [[Eigenmonzo basis]] ([[unchanged-interval basis]]): 2.5
: [[eigenmonzo basis|unchanged-interval (eigenmonzo) basis]]: 2.5


{{Optimal ET sequence|legend=1| 7, 20c, 27, 34, 75, 109, 470b, 579b }}
{{Optimal ET sequence|legend=1| 7, 20c, 27, 34, 75, 109 }}


[[Badness]]: 0.048518
[[Badness]] (Sintel): 1.14


=== Overview to extensions ===
=== Overview to extensions ===
The second comma of the [[Normal lists|normal comma list]] defines which 7-limit family member we are looking at.
==== Subgroup extensions ====
* [[875/864]], the keema, gives monkey;
Since the generator in all reasonable tunings is between 10/9 and [[11/10]], it is natural to extend tetracot to the [[11-limit]] by tempering out (10/9)/(11/10) = [[100/99]]. This gives the [[2.3.5.11 subgroup|2.3.5.11-subgroup]] version of tetracot, dispensing with 7. For this, [[41edo]] can be used as a tuning.  
* 179200/177147 (or equivalently [[225/224]]) gives bunya;
* [[245/243]] gives octacot, which splits the generator in half.


==== Monkey and bunya ====
Since [[16/13]] is shy of (10/9)<sup>2</sup> by just [[325/324]], it is likewise natural to extend our winning streak by adding this to the list of commas. This gives us [[2.3.5.11.13 subgroup|2.3.5.11.13-subgroup]] tetracot, which tempers out 100/99, [[144/143]] and [[243/242]], with the [[S-expression]]-based comma list {[[243/242|S9/S11]], [[100/99|S10]], [[144/143|S12]]}.  
''Monkey'' tempers out the keema. The keema, 875/864, is the amount by which three just minor thirds fall short of 7/4, and tells us the ~7/4 of monkey is reached by three minor thirds in succession. It can be described as the 34 &amp; 41 temperament. [[41edo]] is an excellent tuning for monkey, and has the effect of making monkey identical to bunya with the same tuning.


''Bunya'' adds 225/224 to the list of commas and may be described as the 34d &amp; 41 temperament. 41edo can again be used as a tuning, in which case it is the same as monkey. However an excellent alternative is 14<sup>1/26</sup> as a generator, giving just ~7's and an improved value for ~5, at the cost of a slightly sharper, but still less than a cent sharp, fifth. Octave stretching, if employed, also serves to distinguish bunya from monkey, as its octaves should be stretched considerably less.
==== Full 7-limit extensions ====
The second comma of the comma list defines which 7-limit family member we are looking at. [[875/864]], the keema, gives monkey. [[225/224]] gives bunya. [[64/63]] gives modus. [[126/125]] gives wollemia. These all use the same generators as tetracot.  


Since the generator in all cases is between 10/9 and 11/10, it is natural to extend these temperaments to the 11-limit by tempering out (10/9)/(11/10) = [[100/99]]. This gives 11-limit monkey, {{multival| 4 9 -15 10 … }} and 11-limit bunya, {{multival| 4 9 26 10 … }}. Again, 41edo can be used as a tuning, making the two identical, which is also the case if we turn to the 2.3.5.11 subgroup temperament, dispensing with 7. However, 11-limit bunya, like 7-limit bunya, profits a little from a slightly sharper fifth, such as the 14<sup>1/26</sup> generator supplies, or even sharper yet, as for instance by the val {{val| 355 563 823 997 1230 }}, with a 52/355 generator.
[[245/243]] gives octacot, which splits the generator in halves. [[3125/3087]] gives dodecacot, which splits the generator in thirds. [[50/49]] gives weasel, which splits the period in halves.  
 
Since [[16/13]] is shy of (10/9)<sup>2</sup> by just [[325/324]], it is likewise natural to extend our winning streak with these temperaments by adding this to the list of commas. This gives us {{multival| 4 9 -15 10 -2 … }} for 13-limit monkey and {{multival| 4 9 26 10 -2 … }} for 13-limit bunya. Once again, 41edo is recommended as a tuning for monkey, while bunya can with advantage tune the fifth sharper: 17\116 as a generator with a fifth a cent and a half sharp or 11\75 with a fifth two cents sharp.


=== 2.3.5.11 subgroup ===
=== 2.3.5.11 subgroup ===
{{Main| Tetracot }}
Subgroup: 2.3.5.11
{{See also| No-sevens subgroup temperaments #Tetracot }}
 
As discussed above, tetracot works well for the 2.3.5.11.13 subgroup, in which tempering out 100/99, 144/143 and 243/242.
 
[[Subgroup]]: 2.3.5.11


[[Comma list]]: 100/99, 243/242
Comma list: 100/99, 243/242


[[Sval]] [[mapping]]: [{{val| 1 1 1 2 }}, {{val| 0 4 9 10 }}]
Subgroup-val mapping: {{mapping| 1 1 1 2 | 0 4 9 10 }}


[[Gencom]]: [2 10/9; 100/99 243/242]
Optimal tunings:  
* WE: ~2 = 1199.3274{{c}}, ~10/9 = 175.8862{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~10/9 = 175.8847{{c}}


[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~10/9 = 175.985
{{Optimal ET sequence|legend=0| 7, 20ce, 27e, 34, 41, 75e }}


{{Optimal ET sequence|legend=1| 7, 27e, 34, 41, 75e }}
Badness (Sintel): 0.459


==== 2.3.5.11.13 subgroup ====
==== 2.3.5.11.13 subgroup ====
Line 60: Line 60:
Comma list: 100/99, 144/143, 243/242
Comma list: 100/99, 144/143, 243/242


Sval mapping: [{{val| 1 1 1 2 4 }}, {{val| 0 4 9 10 -2 }}]
Subgroup-val mapping: {{mapping| 1 1 1 2 4 | 0 4 9 10 -2 }}


Gencom: [2 10/9; 100/99 144/143 243/242]
Optimal tunings:  
* WE: ~2 = 1198.6852{{c}}, ~10/9 = 176.0034{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~10/9 = 176.0854{{c}}


Optimal tuning (POTE): ~2 = 1\1, ~10/9 = 176.196
{{Optimal ET sequence|legend=0| 7, 20ce, 27e, 34, 41, 75e, 109ef }}


{{Optimal ET sequence|legend=1| 7, 27e, 34, 41, 75e }}
Badness (Sintel): 0.489


== Monkey ==
== Monkey ==
{{See also| Tetracot }}
{{Main| Monkey }}
 
Monkey tempers out the [[keema]]. The keema, 875/864, is the amount by which three [[6/5|just minor thirds]] fall short of [[7/4]], and tells us the ~7/4 of monkey is reached by three such minor thirds in succession. It can be described as the {{nowrap| 34 & 41 }} temperament. [[41edo]] is an excellent tuning for monkey, and has the effect of making monkey identical to [[#Bunya|bunya]] with the same tuning.


[[Subgroup]]: 2.3.5.7
[[Subgroup]]: 2.3.5.7
Line 75: Line 79:
[[Comma list]]: 875/864, 5120/5103
[[Comma list]]: 875/864, 5120/5103


[[Mapping]]: [{{val| 1 1 1 5 }}, {{val| 0 4 9 -15 }}]
{{Mapping|legend=1| 1 1 1 5 | 0 4 9 -15 }}


{{Multival|legend=1| 4 9 -15 5 -35 -60 }}
[[Optimal tuning]]s:
* [[WE]]: ~2 = 1200.7982{{c}}, ~10/9 = 175.7757{{c}}
: [[error map]]: {{val| +0.798 +1.946 -3.534 -1.470 }}
* [[CWE]]: ~2 = 1200.0000{{c}}, ~10/9 = 175.6622{{c}}
: error map: {{val| 0.000 +0.694 -5.354 -3.759 }}


[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~10/9 = 175.659
{{Optimal ET sequence|legend=1| 7, 34, 41 }}


{{Optimal ET sequence|legend=1| 7, 27d, 34, 41, 321ccdd }}
[[Badness]] (Sintel): 1.86
 
[[Badness]]: 0.073437


=== 11-limit ===
=== 11-limit ===
Line 90: Line 96:
Comma list: 100/99, 243/242, 385/384
Comma list: 100/99, 243/242, 385/384


Mapping: [{{val| 1 1 1 5 2 }}, {{val| 0 4 9 -15 10 }}]
Mapping: {{mapping| 1 1 1 5 2 | 0 4 9 -15 10 }}


Optimal tuning (POTE): ~2 = 1\1, ~10/9 = 175.570
Optimal tunings:
* WE: ~2 = 1200.3988{{c}}, ~10/9 = 175.6287{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~10/9 = 175.5750{{c}}


{{Optimal ET sequence|legend=1| 7, 27de, 34, 41 }}
{{Optimal ET sequence|legend=0| 7, 34, 41 }}


Badness: 0.038836
Badness (Sintel): 1.28


=== 13-limit ===
=== 13-limit ===
Line 103: Line 111:
Comma list: 100/99, 105/104, 144/143, 243/242
Comma list: 100/99, 105/104, 144/143, 243/242


Mapping: [{{val| 1 1 1 5 2 4 }}, {{val| 0 4 9 -15 10 -2 }}]
Mapping: {{mapping| 1 1 1 5 2 4 | 0 4 9 -15 10 -2 }}


Optimal tuning (POTE): ~2 = 1\1, ~10/9 = 175.622
Optimal tunings:
* WE: ~2 = 1199.9206{{c}}, ~10/9 = 175.6108{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~10/9 = 175.6217{{c}}


{{Optimal ET sequence|legend=1| 7, 27de, 34, 41 }}
{{Optimal ET sequence|legend=0| 7, 34, 41 }}


Badness: 0.028410
Badness (Sintel): 1.17
 
=== 17-limit ===
Subgroup: 2.3.5.7.11.13.17
 
Comma list: 100/99, 105/104, 144/143, 154/153, 170/169
 
Mapping: {{mapping| 1 1 1 5 2 4 6 | 0 4 9 -15 10 -2 -13 }}
 
Optimal tunings:
* WE: ~2 = 1199.5029{{c}}, ~10/9 = 175.6832{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~10/9 = 175.7558{{c}}
 
{{Optimal ET sequence|legend=0| 7, 34, 41 }}
 
Badness (Sintel): 1.32
 
=== 19-limit ===
Subgroup: 2.3.5.7.11.13.17.19
 
Comma list: 100/99, 105/104, 144/143, 154/153, 170/169, 171/169
 
Mapping: {{mapping| 1 1 1 5 2 4 6 6 | 0 4 9 -15 10 -2 -13 -12 }}
 
Optimal tunings:
* WE: ~2 = 1199.7318{{c}}, ~10/9 = 175.6498{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~10/9 = 175.6901{{c}}
 
{{Optimal ET sequence|legend=0| 7, 34, 41 }}
 
Badness (Sintel): 1.35


== Bunya ==
== Bunya ==
{{See also| Tetracot }}
{{Main| Bunya }}
 
Bunya adds [[225/224]] to the list of commas and may be described as the {{nowrap| 34d & 41 }} temperament. [[41edo]] can again be used as a tuning, in which case it is the same as [[#Monkey|monkey]]. However, bunya profits a little from a slightly sharper fifth. An excellent generator is 14<sup>1/26</sup>, giving just ~7's and an improved value for ~5, at the cost of a slightly sharper but still less-than-a-cent-sharp fifth, or even sharper yet: 17\116 with a fifth a cent and a half sharp, or 11\75 with a fifth two cents sharp. [[Octave stretching]], if employed, also serves to distinguish bunya from monkey, as its octaves should be stretched considerably less.


[[Subgroup]]: 2.3.5.7
[[Subgroup]]: 2.3.5.7
Line 118: Line 160:
[[Comma list]]: 225/224, 15625/15309
[[Comma list]]: 225/224, 15625/15309


[[Mapping]]: [{{val| 1 1 1 -1 }}, {{val| 0 4 9 26 }}]
{{Mapping|legend=1| 1 1 1 -1 | 0 4 9 26 }}
 
{{Multival|legend=1| 4 9 26 5 30 35 }}


[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~10/9 = 175.741
[[Optimal tuning]]s:
* [[WE]]: ~2 = 1200.2991{{c}}, ~10/9 = 175.7844{{c}}
: [[error map]]: {{val| +0.299 +1.482 -3.955 +1.270 }}
* [[CWE]]: ~2 = 1200.0000{{c}}, ~10/9 = 175.7567{{c}}
: error map: {{val| 0.000 +1.072 -4.503 +0.849 }}


{{Optimal ET sequence|legend=1| 34d, 41, 116, 157c, 198c }}
{{Optimal ET sequence|legend=1| 7d, …, 34d, 41, 116, 157c, 198c }}


[[Badness]]: 0.062897
[[Badness]] (Sintel): 1.59


=== 11-limit ===
=== 11-limit ===
Line 133: Line 177:
Comma list: 100/99, 225/224, 243/242
Comma list: 100/99, 225/224, 243/242


Mapping: [{{val| 1 1 1 -1 2 }}, {{val| 0 4 9 26 10 }}]
Mapping: {{mapping| 1 1 1 -1 2 | 0 4 9 26 10 }}


Optimal tuning (POTE): ~2 = 1\1, ~10/9 = 175.777
Optimal tunings:
* WE: ~2 = 1199.7481{{c}}, ~10/9 = 175.7401{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~10/9 = 175.7637{{c}}


{{Optimal ET sequence|legend=1| 34d, 41, 116e, 157ce }}
{{Optimal ET sequence|legend=0| 7d, …, 34d, 41, 116e }}


Badness: 0.031332
Badness (Sintel): 1.04


=== 13-limit ===
=== 13-limit ===
Line 146: Line 192:
Comma list: 100/99, 144/143, 225/224, 243/242
Comma list: 100/99, 144/143, 225/224, 243/242


Mapping: [{{val| 1 1 1 -1 2 4 }}, {{val| 0 4 9 26 10 -2 }}]
Mapping: {{mapping| 1 1 1 -1 2 4 | 0 4 9 26 10 -2 }}
 
Optimal tunings:
* WE: ~2 = 1199.1044{{c}}, ~10/9 = 175.7545{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~10/9 = 175.8526{{c}}
 
{{Optimal ET sequence|legend=0| 7d, 34d, 41, 116ef }}
 
Badness (Sintel): 1.03
 
=== 17-limit ===
Subgroup: 2.3.5.7.11.13.17
 
Comma list: 100/99, 120/119, 144/143, 170/169, 225/224
 
Mapping: {{mapping| 1 1 1 -1 2 4 6 | 0 4 9 26 10 -2 -13 }}
 
Optimal tunings:
* WE: ~2 = 1198.7905{{c}}, ~10/9 = 175.7757{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~10/9 = 175.9302{{c}}
 
{{Optimal ET sequence|legend=0| 34d, 41, 75e }}
 
Badness (Sintel): 1.19


Optimal tuning (POTE): ~2 = 1\1, ~10/9 = 175.886
=== 19-limit ===
Subgroup: 2.3.5.7.11.13.17.19


{{Optimal ET sequence|legend=1| 34d, 41, 75e, 116ef }}
Comma list: 100/99, 120/119, 144/143, 170/169, 190/189, 225/224


Badness: 0.024886
Mapping: {{mapping| 1 1 1 -1 2 4 6 0 | 0 4 9 26 10 -2 -13 29 }}
 
Optimal tunings:
* WE: ~2 = 1198.7904{{c}}, ~10/9 = 175.7755{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~10/9 = 175.9287{{c}}
 
{{Optimal ET sequence|legend=0| 34dh, 41, 75e }}
 
Badness (Sintel): 1.18


== Modus ==
== Modus ==
{{See also| Tetracot }}
{{Main| Modus }}


Modus was named by [[Mike Battaglia]] in 2012 for its fantastic modmos structures<ref>[https://yahootuninggroupsultimatebackup.github.io/tuning/topicId_102416.html#102467 Yahoo! Tuning Group | ''Guaranteed meantone successor'']</ref>.
Modus tempers out [[64/63]] as well as [[4375/4374]], and may be described as the {{nowrap| 27 & 34d }} temperament. While less accurate than [[#Monkey|monkey]] or [[#Bunya|bunya]], it is nonetheless very useful because it is simpler and because of the harmonic puns it possesses. [[27edo]], [[34edo]] and [[61edo]] can all be used as tunings.  


[[Subgroup]]: 2.3.5.7
[[Subgroup]]: 2.3.5.7
Line 163: Line 241:
[[Comma list]]: 64/63, 4375/4374
[[Comma list]]: 64/63, 4375/4374


[[Mapping]]: [{{val| 1 1 1 4 }}, {{val| 0 4 9 -8 }}]
{{Mapping|legend=1| 1 1 1 4 | 0 4 9 -8 }}


[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~10/9 = 177.203
[[Optimal tuning]]s:
* [[WE]]: ~2 = 1196.7884{{c}}, ~10/9 = 176.7292{{c}}
: [[error map]]: {{val| -3.212 +1.750 +1.038 +4.494 }}
* [[CWE]]: ~2 = 1200.0000{{c}}, ~10/9 = 177.1188{{c}}
: error map: {{val| 0.000 +6.520 +7.755 +14.224 }}


{{Optimal ET sequence|legend=1| 7, 20c, 27, 61d, 88bcd }}
{{Optimal ET sequence|legend=1| 7, 20c, 27, 61d, 88bcd, 149bccddd }}


[[Badness]]: 0.068184
[[Badness]] (Sintel): 1.73


=== 11-limit ===
=== 11-limit ===
Line 176: Line 258:
Comma list: 64/63, 100/99, 243/242
Comma list: 64/63, 100/99, 243/242


Mapping: [{{val| 1 1 1 4 2 }}, {{val| 0 4 9 -8 10 }}]
Mapping: {{mapping| 1 1 1 4 2 | 0 4 9 -8 10 }}


Optimal tuning (POTE): ~2 = 1\1, ~10/9 = 177.053
Optimal tunings:
* WE: ~2 = 1196.4227{{c}}, ~10/9 = 176.5252{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~10/9 = 176.9286{{c}}


{{Optimal ET sequence|legend=1| 7, 20ce, 27e, 34d, 61de }}
{{Optimal ET sequence|legend=0| 7, 20ce, 27e, 34d, 61de }}


Badness: 0.035149
Badness (Sintel): 1.16


==== 13-limit ====
==== 13-limit ====
Line 189: Line 273:
Comma list: 64/63, 78/77, 100/99, 144/143
Comma list: 64/63, 78/77, 100/99, 144/143


Mapping: [{{val| 1 1 1 4 2 4 }}, {{val| 0 4 9 -8 10 -2 }}]
Mapping: {{mapping| 1 1 1 4 2 4 | 0 4 9 -8 10 -2 }}


Optimal tuning (POTE): ~2 = 1\1, ~10/9 = 176.953
Optimal tunings:
* WE: ~2 = 1196.8686{{c}}, ~10/9 = 176.4915{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~10/9 = 176.8735{{c}}


{{Optimal ET sequence|legend=1| 7, 20ce, 27e, 34d, 61de }}
{{Optimal ET sequence|legend=0| 7, 20ce, 27e, 34d, 61de }}


Badness: 0.023806
Badness (Sintel): 0.984


; Music
==== 17-limit ====
* [http://micro.soonlabel.com/gene_ward_smith/Others/Schallert/Tetracot%20Perc-Sitar.mp3 ''Tetracot Perc-Sitar''] by [http://soundcloud.com/dustin-schallert/tetracot-perc-sitar Dustin Schallert]
Subgroup: 2.3.5.7.11.13.17
* [http://micro.soonlabel.com/gene_ward_smith/Others/Schallert/Tetracot%20Jam.mp3 ''Tetracot Jam''] by [http://soundcloud.com/dustin-schallert/tetracot-jam Dustin Schallert]
 
* [http://micro.soonlabel.com/gene_ward_smith/Others/Schallert/Tetracot%20Pump.mp3 ''Tetracot Pump''] by [http://soundcloud.com/dustin-schallert/tetracot-pump Dustin Schallert] all in [[27edo]]
Comma list: 64/63, 78/77, 100/99, 120/119, 144/143
 
Mapping: {{mapping| 1 1 1 4 2 4 1 | 0 4 9 -8 10 -2 21 }}
 
Optimal tunings:
* WE: ~2 = 1196.8783{{c}}, ~10/9 = 176.5241{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~10/9 = 176.8969{{c}}
 
{{Optimal ET sequence|legend=0| 7g, …, 27eg, 34d }}
 
Badness (Sintel): 1.10
 
==== 19-limit ====
Subgroup: 2.3.5.7.11.13.17.19
 
Comma list: 64/63, 78/77, 96/95, 100/99, 120/119, 144/143
 
Mapping: {{mapping| 1 1 1 4 2 4 1 5 | 0 4 9 -8 10 -2 21 -5 }}
 
Optimal tunings:
* WE: ~2 = 1196.6939{{c}}, ~10/9 = 176.5426{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~10/9 = 176.9645{{c}}
 
{{Optimal ET sequence|legend=0| 7g, …, 27eg, 34dh, 61degh }}
 
Badness (Sintel): 1.09


=== Ponens ===
=== Ponens ===
Line 209: Line 320:
Comma list: 55/54, 64/63, 363/350
Comma list: 55/54, 64/63, 363/350


Mapping: [{{val| 1 1 1 4 3 }}, {{val| 0 4 9 -8 3 }}]
Mapping: {{mapping| 1 1 1 4 3 | 0 4 9 -8 3 }}


Optimal tuning (POTE): ~2 = 1\1, ~10/9 = 177.200
Optimal tunings:
* WE: ~2 = 1198.5026{{c}}, ~10/9 = 176.9786{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~10/9 = 177.1589{{c}}


{{Optimal ET sequence|legend=1| 7, 20c, 27, 61dee, 88bcdee }}
{{Optimal ET sequence|legend=0| 7, 20c, 27 }}


Badness: 0.063077
Badness (Sintel): 2.09


==== 13-limit ====
==== 13-limit ====
Line 222: Line 335:
Comma list: 55/54, 64/63, 66/65, 143/140
Comma list: 55/54, 64/63, 66/65, 143/140


Mapping: [{{val| 1 1 1 4 3 4 }}, {{val| 0 4 9 -8 3 -2 }}]
Mapping: {{mapping| 1 1 1 4 3 4 | 0 4 9 -8 3 -2 }}
 
Optimal tunings:
* WE: ~2 = 1198.5149{{c}}, ~10/9 = 176.9778{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~10/9 = 177.1681{{c}}
 
{{Optimal ET sequence|legend=0| 7, 20c, 27 }}
 
Badness (Sintel): 1.61
 
==== 17-limit ====
Subgroup: 2.3.5.7.11.13.17
 
Comma list: 52/51, 55/54, 64/63, 66/65, 143/140
 
Mapping: {{mapping| 1 1 1 4 3 4 5 | 0 4 9 -8 3 -2 -6 }}


Optimal tuning (POTE): ~2 = 1\1, ~10/9 = 177.197
Optimal tunings:
* WE: ~2 = 1197.4542{{c}}, ~10/9 = 177.1828{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~10/9 = 177.5355{{c}}


{{Optimal ET sequence|legend=1| 7, 20c, 27, 61dee, 88bcdee }}
{{Optimal ET sequence|legend=0| 7, 20c }}


Badness: 0.039043
Badness (Sintel): 1.79
 
==== 19-limit ====
Subgroup: 2.3.5.7.11.13.17.19
 
Comma list: 52/51, 55/54, 64/63, 66/65, 77/76, 143/140
 
Mapping: {{mapping| 1 1 1 4 3 4 5 5 | 0 4 9 -8 3 -2 -6 -5 }}
 
Optimal tunings:
* WE: ~2 = 1197.3233{{c}}, ~10/9 = 177.2025{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~10/9 = 177.5878{{c}}
 
{{Optimal ET sequence|legend=0| 7, 20c }}
 
Badness (Sintel): 1.70


== Wollemia ==
== Wollemia ==
{{See also| Tetracot }}
{{Main| Wollemia }}
 
Wollemia tempers out [[126/125]] as well as [[2240/2187]], and may be described as the {{nowrap| 27 & 34 }} temperament. [[27edo]] may be recommended as a tuning, in which case it is identical to modus with the same tuning.


[[Subgroup]]: 2.3.5.7
[[Subgroup]]: 2.3.5.7
Line 237: Line 384:
[[Comma list]]: 126/125, 2240/2187
[[Comma list]]: 126/125, 2240/2187


[[Mapping]]: [{{val| 1 1 1 0 }}, {{val| 0 4 9 19 }}]
{{Mapping|legend=1| 1 1 1 0 | 0 4 9 19 }}


{{Multival|legend=1| 4 9 19 5 19 19 }}
[[Optimal tuning]]s:
* [[WE]]: ~2 = 1197.6555{{c}}, ~10/9 = 177.0104{{c}}
: [[error map]]: {{val| -2.345 +3.742 +4.435 -5.628 }}
* [[CWE]]: ~2 = 1200.0000{{c}}, ~10/9 = 177.1667{{c}}
: error map: {{val| 0.000 +6.712 +8.186 -2.659 }}


[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~10/9 = 177.357
{{Optimal ET sequence|legend=1| 7d, 20cd, 27, 61, 88bc, 115bc }}


{{Optimal ET sequence|legend=1| 27, 61, 88bc, 115bc }}
[[Badness]] (Sintel): 1.78
 
[[Badness]]: 0.070522


=== 11-limit ===
=== 11-limit ===
Line 252: Line 401:
Comma list: 56/55, 100/99, 243/242
Comma list: 56/55, 100/99, 243/242


Mapping: [{{val| 1 1 1 0 2 }}, {{val| 0 4 9 19 10 }}]
Mapping: {{mapping| 1 1 1 0 2 | 0 4 9 19 10 }}


Optimal tuning (POTE): ~2 = 1\1, ~10/9 = 177.413
Optimal tunings:
* WE: ~2 = 1196.6462{{c}}, ~10/9 = 176.9174{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~10/9 = 177.1370{{c}}


{{Optimal ET sequence|legend=1| 27e, 34, 61e }}
{{Optimal ET sequence|legend=0| 7d, 20cde, 27e }}


Badness: 0.037551
Badness (Sintel): 1.24


=== 13-limit ===
=== 13-limit ===
Line 265: Line 416:
Comma list: 56/55, 91/90, 100/99, 243/242
Comma list: 56/55, 91/90, 100/99, 243/242


Mapping: [{{val| 1 1 1 0 2 4 }}, {{val| 0 4 9 19 10 -2 }}]
Mapping: {{mapping| 1 1 1 0 2 4 | 0 4 9 19 10 -2 }}


Optimal tuning (POTE): ~2 = 1\1, ~10/9 = 177.231
Optimal tunings:
* WE: ~2 = 1197.4576{{c}}, ~10/9 = 176.8557{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~10/9 = 177.0949{{c}}


{{Optimal ET sequence|legend=1| 27e, 34, 61e }}
{{Optimal ET sequence|legend=0| 7d, 20cde, 27e }}


Badness: 0.031219
Badness (Sintel): 1.29
 
=== 17-limit ===
Subgroup: 2.3.5.7.11.13.17
 
Comma list: 56/55, 91/90, 100/99, 136/135, 154/153
 
Mapping: {{mapping| 1 1 1 0 2 4 1 | 0 4 9 19 10 -2 21 }}
 
Optimal tunings:
* WE: ~2 = 1197.4770{{c}}, ~10/9 = 176.7733{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~10/9 = 177.0123{{c}}
 
{{Optimal ET sequence|legend=0| 7dg, 27eg }}
 
Badness (Sintel): 1.25
 
=== 19-limit ===
Subgroup: 2.3.5.7.11.13.17.19
 
Comma list: 56/55, 76/75, 91/90, 100/99, 136/135, 154/153
 
Mapping: {{mapping| 1 1 1 0 2 4 1 1 | 0 4 9 19 10 -2 21 22 }}
 
Optimal tunings:
* WE: ~2 = 1197.4380{{c}}, ~10/9 = 176.8774{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~10/9 = 177.1216{{c}}
 
{{Optimal ET sequence|legend=0| 7dgh, 27eg }}
 
Badness (Sintel): 1.28


== Octacot ==
== Octacot ==
{{See also| Chords of octacot }}
{{See also| Chords of octacot }}


Octacot cuts the Gordian knot of deciding between the monkey and bunya mappings for 7 by cutting the generator in half and splitting the difference. It adds [[245/243]] to the normal comma list, and also tempers out [[2401/2400]]. It may also be described as 41 &amp; 68. [[68edo]] or [[109edo]] can be used as tunings, as can (5/2)<sup>1/18</sup>, which gives just major thirds. Another tuning is [[150edo]], which has a generator, 11\150, of exactly 88 cents. This relates octacot to the [[88cET]] non-octave temperament, which like [[Carlos Alpha]] arguably makes more sense viewed as part of a rank-2 temperament with octaves rather than rank-1 without them.
Octacot splits the difference between the [[#Monkey|monkey]] and [[#Bunya|bunya]] mappings for 7 by cutting the generator in half. It adds [[245/243]] to the normal comma list, and also tempers out [[2401/2400]]. It may also be described as {{nowrap| 41 & 68 }}. [[68edo]] or [[109edo]] can be used as tunings, as can (5/2)<sup>1/18</sup>, which gives just major thirds. Another tuning is [[150edo]], which has a generator, 11\150, of exactly 88 cents. This relates octacot to the [[88cET]] non-octave temperament, which like [[Carlos Alpha]] arguably makes more sense viewed as part of a rank-2 temperament with octaves rather than rank-1 without them.


Once again and for the same reasons, it is natural to add 100/99 and 325/324 to the list of commas, giving {{multival| 8 18 11 20 -4 … }} as the octave part of the wedgie. Generators of 3\41, 8\109 and 11\150 (88 cents) are all good choices for the 7, 11 and 13 limits.
Once again and for the same reasons, it is natural to add 100/99 and 325/324 to the list of commas. Generators of 3\41, 8\109 and 11\150 (88 cents) are all good choices for the 7, 11 and 13 limits.


[[Subgroup]]: 2.3.5.7
[[Subgroup]]: 2.3.5.7
Line 284: Line 467:
[[Comma list]]: 245/243, 2401/2400
[[Comma list]]: 245/243, 2401/2400


[[Mapping]]: [{{val| 1 1 1 2 }}, {{val| 0 8 18 11 }}]
{{Mapping|legend=1| 1 1 1 2 | 0 8 18 11 }}


{{Multival|legend=1| 8 18 11 10 -5 -25 }}
[[Optimal tuning]]s:
 
* [[WE]]: ~2 = 1199.6782{{c}}, ~21/20 = 88.0528{{c}}
[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~21/20 = 88.076
: [[error map]]: {{val| -0.322 +2.145 -1.686 -0.889 }}
* [[CWE]]: ~2 = 1200.0000{{c}}, ~21/20 = 88.0525{{c}}
: error map: {{val| 0.000 +2.465 -1.369 -0.248 }}


{{Optimal ET sequence|legend=1| 14c, 27, 41, 68, 109 }}
{{Optimal ET sequence|legend=1| 14c, 27, 41, 68, 109 }}


[[Badness]]: 0.033845
[[Badness]] (Sintel): 0.857


=== 11-limit ===
=== 11-limit ===
Line 299: Line 484:
Comma list: 100/99, 243/242, 245/242
Comma list: 100/99, 243/242, 245/242


Mapping: [{{val| 1 1 1 2 2 }}, {{val| 0 8 18 11 20 }}]
Mapping: {{mapping| 1 1 1 2 2 | 0 8 18 11 20 }}


Optimal tuning (POTE): ~2 = 1\1, ~21/20 = 87.975
Optimal tunings:
* WE: ~2 = 1199.6025{{c}}, ~21/20 = 87.9460{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~21/20 = 87.9453{{c}}


{{Optimal ET sequence|legend=1| 27e, 41, 109e, 150e, 191e }}
{{Optimal ET sequence|legend=0| 14c, 27e, 41, 109e }}


Badness: 0.024078
Badness (Sintel): 0.796


==== 13-limit ====
==== 13-limit ====
Line 312: Line 499:
Comma list: 100/99, 144/143, 196/195, 243/242
Comma list: 100/99, 144/143, 196/195, 243/242


Mapping: [{{val| 1 1 1 2 2 4 }}, {{val| 0 8 18 11 20 -4 }}]
Mapping: {{mapping| 1 1 1 2 2 4 | 0 8 18 11 20 -4 }}


Optimal tuning (POTE): ~2 = 1\1, ~21/20 = 88.106
Optimal tunings:
* WE: ~2 = 1198.8609{{c}}, ~21/20 = 87.0219{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~21/20 = 88.0557{{c}}


{{Optimal ET sequence|legend=1| 27e, 41, 68e, 109ef }}
{{Optimal ET sequence|legend=0| 14c, 27e, 41, 68e, 109ef }}


Badness: 0.023276
Badness (Sintel): 0.962


===== 17-limit =====
===== 17-limit =====
Line 325: Line 514:
Comma list: 100/99, 120/119, 144/143, 154/153, 189/187
Comma list: 100/99, 120/119, 144/143, 154/153, 189/187


Mapping: [{{val| 1 1 1 2 2 4 3 }}, {{val| 0 8 18 11 20 -4 15 }}]
Mapping: {{mapping| 1 1 1 2 2 4 3 | 0 8 18 11 20 -4 15 }}


Optimal tuning (POTE): ~2 = 1\1, ~18/17 = 88.102
Optimal tunings:
* WE: ~2 = 1198.4494{{c}}, ~21/20 = 87.9878{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~21/20 = 88.0324{{c}}


{{Optimal ET sequence|legend=1| 14c, 27eg, 41, 68egg, 109efgg }}
{{Optimal ET sequence|legend=0| 14c, 27eg, 41, 68egg }}


Badness: 0.021088
Badness (Sintel): 1.07


===== 19-limit =====
===== 19-limit =====
Line 338: Line 529:
Comma list: 100/99, 120/119, 133/132, 144/143, 154/153, 189/187
Comma list: 100/99, 120/119, 133/132, 144/143, 154/153, 189/187


Mapping: [{{val| 1 1 1 2 2 4 3 3 }}, {{val| 0 8 18 11 20 -4 15 17 }}]
Mapping: {{mapping| 1 1 1 2 2 4 3 3 | 0 8 18 11 20 -4 15 17 }}


Optimal tuning (POTE): ~2 = 1\1, ~18/17 = 88.111
Optimal tunings:
* WE: ~2 = 1198.5995{{c}}, ~20/19 = 88.0081{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~20/19 = 88.0471{{c}}


{{Optimal ET sequence|legend=1| 14c, 27eg, 41, 68egg, 109efgg }}
{{Optimal ET sequence|legend=0| 14c, 27eg, 41, 68egg }}


Badness: 0.016652
Badness (Sintel): 1.01


==== Octocat ====
==== Octocat ====
Line 351: Line 544:
Comma list: 78/77, 91/90, 100/99, 245/242
Comma list: 78/77, 91/90, 100/99, 245/242


Mapping: [{{val| 1 1 1 2 2 2 }}, {{val| 0 8 18 11 20 23 }}]
Mapping: {{mapping| 1 1 1 2 2 2 | 0 8 18 11 20 23 }}
 
Optimal tunings:
* WE: ~2 = 1199.4441{{c}}, ~21/20 = 88.1380{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~21/20 = 88.1375{{c}}
 
{{Optimal ET sequence|legend=0| 14cf, 27e, 41f }}
 
Badness (Sintel): 1.14
 
===== 17-limit =====
Subgroup: 2.3.5.7.11.13.17
 
Comma list: 52/51, 78/77, 91/90, 100/99, 189/187
 
Mapping: {{mapping| 1 1 1 2 2 2 3 | 0 8 18 11 20 23 15 }}


Optimal tuning (POTE): ~2 = 1\1, ~21/20 = 88.179
Optimal tunings:
* WE: ~2 = 1198.4257{{c}}, ~21/20 = 88.1636{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~21/20 = 88.1642{{c}}


{{Optimal ET sequence|legend=1| 27e, 41f, 68ef }}
{{Optimal ET sequence|legend=0| 14cf, 27eg }}


Badness: 0.027601
Badness (Sintel): 1.19
 
===== 19-limit =====
Subgroup: 2.3.5.7.11.13.17.19
 
Comma list: 52/51, 78/77, 91/90, 100/99, 133/132, 189/187
 
Mapping: {{mapping| 1 1 1 2 2 2 3 3 | 0 8 18 11 20 23 15 17 }}
 
Optimal tunings:
* WE: ~2 = 1198.5748{{c}}, ~20/19 = 88.1631{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~20/19 = 88.1637{{c}}
 
{{Optimal ET sequence|legend=0| 14cf, 27eg }}
 
Badness (Sintel): 1.09


==== Octopod ====
==== Octopod ====
Line 364: Line 589:
Comma list: 100/99, 105/104, 243/242, 245/242
Comma list: 100/99, 105/104, 243/242, 245/242


Mapping: [{{val| 1 1 1 2 2 1 }}, {{val| 0 8 18 11 20 37 }}]
Mapping: {{mapping| 1 1 1 2 2 1 | 0 8 18 11 20 37 }}


Optimal tuning (POTE): ~2 = 1\1, ~21/20 = 87.697
Optimal tunings:
* WE: ~2 = 1200.5116{{c}}, ~21/20 = 87.7346{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~21/20 = 87.7257{{c}}


{{Optimal ET sequence|legend=1| 41, 137cd, 178cd }}
{{Optimal ET sequence|legend=0| 14cf, 27eff, 41 }}


Badness: 0.028326
Badness (Sintel): 1.17
 
===== 17-limit =====
Subgroup: 2.3.5.7.11.13.17
 
Comma list: 100/99, 105/104, 120/119, 154/153, 243/242
 
Mapping: {{mapping| 1 1 1 2 2 1 3 | 0 8 18 11 20 37 15 }}
 
Optimal tunings:
* WE: ~2 = 1199.6667{{c}}, ~21/20 = 87.7494{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~21/20 = 87.7559{{c}}
 
{{Optimal ET sequence|legend=0| 14cf, 27effg, 41 }}
 
Badness (Sintel): 1.26
 
===== 19-limit =====
Subgroup: 2.3.5.7.11.13.17.19
 
Comma list: 100/99, 105/104, 120/119, 133/132, 154/153, 209/208
 
Mapping: {{mapping| 1 1 1 2 2 1 3 3 | 0 8 18 11 20 37 15 17 }}
 
Optimal tunings:
* WE: ~2 = 1199.9909{{c}}, ~20/19 = 87.7474{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~20/19 = 87.7476{{c}}
 
{{Optimal ET sequence|legend=0| 14cf, 27effg, 41 }}
 
Badness (Sintel): 1.19


==== Dificot ====
==== Dificot ====
Line 377: Line 634:
Comma list: 100/99, 243/242, 245/242, 343/338
Comma list: 100/99, 243/242, 245/242, 343/338


Mapping: [{{val| 1 9 19 13 22 19 }}, {{val| 0 -16 -36 -22 -40 -33 }}]
Mapping: {{mapping| 1 -7 -17 -9 -18 -14 | 0 16 36 22 40 33 }}
: mapping generators: ~2, ~13/9


Optimal tuning (POTE): ~2 = 1\1, ~13/9 = 643.989
Optimal tunings:
* WE: ~2 = 1199.1496{{c}}, ~13/9 = 643.5328{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~13/9 = 643.9567{{c}}


{{Optimal ET sequence|legend=1| 13cdeef, 28ccdef, 41 }}
{{Optimal ET sequence|legend=0| 13cdeef, 28ccdef, 41 }}


Badness: 0.051876
Badness (Sintel): 2.14


=== October ===
=== October ===
Line 390: Line 650:
Comma list: 245/243, 385/384, 1375/1372
Comma list: 245/243, 385/384, 1375/1372


Mapping: [{{val|1 1 1 2 5}}, {{val|0 8 18 11 -21}}]
Mapping: {{mapping| 1 1 1 2 5 | 0 8 18 11 -21 }}


Optimal tuning (POTE): ~2 = 1\1, ~21/20 = 88.035
Optimal tunings:
* WE: ~2 = 1199.8843{{c}}, ~21/20 = 88.0261{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~21/20 = 88.0329{{c}}


{{Optimal ET sequence|legend=1| 27, 41, 68, 109, 150, 259 }}
{{Optimal ET sequence|legend=0| 27, 41, 68, 109, 150, 259 }}


Badness: 0.039643
Badness (Sintel): 1.31


==== 13-limit ====
==== 13-limit ====
Line 403: Line 665:
Comma list: 196/195, 245/243, 275/273, 385/384
Comma list: 196/195, 245/243, 275/273, 385/384


Mapping: [{{val|1 1 1 2 5 4}}, {{val|0 8 18 11 -21 -4}}]
Mapping: {{mapping| 1 1 1 2 5 4 | 0 8 18 11 -21 -4 }}


Optimal tuning (POTE): ~2 = 1\1, ~21/20 = 88.075
Optimal tunings:
* WE: ~2 = 1199.5060{{c}}, ~21/20 = 88.0388{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~21/20 = 88.0697{{c}}


{{Optimal ET sequence|legend=1| 27, 41, 68, 109f }}
{{Optimal ET sequence|legend=0| 27, 41, 68, 109f }}


Badness: 0.031136
Badness (Sintel): 1.29


==== 17-limit ====
==== 17-limit ====
Line 416: Line 680:
Comma list: 154/153, 170/169, 196/195, 245/243, 256/255
Comma list: 154/153, 170/169, 196/195, 245/243, 256/255


Mapping: [{{val|1 1 1 2 5 4 6}}, {{val|0 8 18 11 -21 -4 -26}}]
Mapping: {{mapping| 1 1 1 2 5 4 6 | 0 8 18 11 -21 -4 -26 }}


Optimal tuning (POTE): ~2 = 1\1, ~21/20 = 88.104
Optimal tunings:
* WE: ~2 = 1199.3845{{c}}, ~21/20 = 88.0589{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~21/20 = 88.1027{{c}}


{{Optimal ET sequence|legend=1| 27, 41, 68, 109f }}
{{Optimal ET sequence|legend=0| 27, 41, 68, 109f }}


Badness: 0.026833
Badness (Sintel): 1.37


==== 19-limit ====
==== 19-limit ====
Line 429: Line 695:
Comma list: 154/153, 170/169, 190/189, 196/195, 209/208, 245/243
Comma list: 154/153, 170/169, 190/189, 196/195, 209/208, 245/243


Mapping: [{{val|1 1 1 2 5 4 6 3}}, {{val|0 8 18 11 -21 -4 -26 17}}]
Mapping: {{mapping| 1 1 1 2 5 4 6 3 | 0 8 18 11 -21 -4 -26 17 }}


Optimal tuning (POTE): ~2 = 1\1, ~19/18 = 88.113
Optimal tunings:
* WE: ~2 = 1199.4449{{c}}, ~20/19 = 88.0723{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~20/19 = 88.1107{{c}}


{{Optimal ET sequence|legend=1| 27, 41, 68, 109f, 177ffg }}
{{Optimal ET sequence|legend=0| 27, 41, 68, 109f }}


Badness: 0.020511
Badness (Sintel): 1.25


== Dodecacot ==
== Dodecacot ==
Line 442: Line 710:
[[Comma list]]: 3125/3087, 10976/10935
[[Comma list]]: 3125/3087, 10976/10935


[[Mapping]]: [{{val| 1 1 1 1 }}, {{val| 0 12 27 37 }}]
{{Mapping|legend=1| 1 1 1 1 | 0 12 27 37 }}
: mapping generators: ~2, ~28/27


{{Multival|legend=1| 12 27 37 15 25 10 }}
[[Optimal tuning]]s:
* [[WE]]: ~2 = 1199.6912{{c}}, ~28/27 = 58.6600{{c}}
: [[error map]]: {{val| -0.309 +1.657 -2.802 +1.287 }}
* [[CWE]]: ~2 = 1200.0000{{c}}, ~28/27 = 58.6624{{c}}
: error map: {{val| 0.000 +1.993 -2.430 +1.681 }}


[[POTE generator]]: ~28/27 = 58.675
{{Optimal ET sequence|legend=1| 20cd, 41, 143d, 184, 225 }}


{{Optimal ET sequence|legend=1| 41, 143d, 184, 225, 409bcd }}
[[Badness]] (Sintel): 3.03
 
[[Badness]]: 0.119761


=== 11-limit ===
=== 11-limit ===
Line 457: Line 728:
Comma list: 100/99, 243/242, 1375/1372
Comma list: 100/99, 243/242, 1375/1372


Mapping: [{{val| 1 1 1 1 2 }}, {{val| 0 12 27 37 30 }}]
Mapping: {{mapping| 1 1 1 1 2 | 0 12 27 37 30 }}


Optimal tuning (POTE): ~2 = 1\1, ~28/27 = 58.665
Optimal tunings:
* WE: ~2 = 1199.3125{{c}}, ~28/27 = 58.6317{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~28/27 = 58.6360{{c}}


{{Optimal ET sequence|legend=1| 20cde, 41 }}
{{Optimal ET sequence|legend=0| 20cde, 41 }}


Badness: 0.059528
Badness (Sintel): 1.97


=== 13-limit ===
=== 13-limit ===
Line 470: Line 743:
Comma list: 100/99, 196/195, 243/242, 275/273
Comma list: 100/99, 196/195, 243/242, 275/273


Mapping: [{{val| 1 1 1 1 2 2 }}, {{val| 0 12 27 37 30 35 }}]
Mapping: {{mapping| 1 1 1 1 2 2 | 0 12 27 37 30 35 }}
 
Optimal tunings:
* WE: ~2 = 1199.0713{{c}}, ~28/27 = 58.5932{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~28/27 = 58.5982{{c}}
 
{{Optimal ET sequence|legend=0| 20cdef, 41 }}
 
Badness (Sintel): 1.80
 
== Weasel ==
{{See also| No-fives subgroup temperaments #Byhearted }}
 
Weasel, named by [[Mike Battaglia]] in 2012<ref>[https://yahootuninggroupsultimatebackup.github.io/tuning/topicId_104304.html Yahoo! Tuning Group | ''This temperament should have a name'']</ref> and also known as ''byhearted''<ref group="note">Alias by [[Xenllium]]. </ref>, tempers out [[50/49]] and splits the octave in halves; its ploidacot is diploid tetracot.
 
[[Subgroup]]: 2.3.5.7
 
[[Comma list]]: 50/49, 19683/19208
 
{{Mapping|legend=1| 2 2 2 3 | 0 4 9 9 }}
: mapping generators: ~7/5, ~10/9
 
[[Optimal tuning]]s:
* [[WE]]: ~7/5 = 599.6934{{c}}, ~10/9 = 175.5626{{c}}
: [[error map]]: {{val| -0.613 -0.318 -6.864 +10.318 }}
* [[CWE]]: ~7/5 = 1200.0000{{c}}, ~10/9 = 175.5632{{c}}
: error map: {{val| 0.000 +0.298 -6.245 +11.243 }}
 
{{Optimal ET sequence|legend=1| 14c, 34d, 48 }}
 
[[Badness]] (Sintel): 2.82
 
=== 11-limit ===
Subgroup: 2.3.5.7.11
 
Comma list: 50/49, 99/98, 243/242
 
Mapping: {{mapping| 2 2 2 3 4 | 0 4 9 9 10 }}
 
Optimal tunings:
* WE: ~7/5 = 599.6525{{c}}, ~10/9 = 175.5103{{c}}
* CWE: ~7/5 = 600.0000{{c}}, ~10/9 = 175.5086{{c}}
 
{{Optimal ET sequence|legend=0| 14c, 34d, 48 }}
 
Badness (Sintel): 1.45
 
=== 13-limit ===
The canonical mapping finds 13/8 at +15 generators rather than using the regular tetracot mapping, in order to find [[15/13]] as being half of [[4/3]].
 
Subgroup: 2.3.5.7.11.13
 
Comma list: 50/49, 78/77, 99/98, 243/242
 
Mapping: {{mapping| 2 2 2 3 4 3 | 0 4 9 9 10 15 }}
 
Optimal tunings:
* WE: ~7/5 = 599.4539{{c}}, ~10/9 = 175.7393{{c}}
* CWE: ~7/5 = 600.0000{{c}}, ~10/9 = 175.7502{{c}}
 
{{Optimal ET sequence|legend=0| 14cf, 20cdef, 34d }}
 
Badness (Sintel): 1.32
 
==== 17-limit ====
Subgroup: 2.3.5.7.11.13.17
 
Comma list: 50/49, 78/77, 85/84, 99/98, 243/242
 
Mapping: {{mapping| 2 2 2 3 4 3 7 | 0 4 9 9 10 15 4 }}
 
Optimal tunings:
* WE: ~7/5 = 599.7509{{c}}, ~10/9 = 175.6684{{c}}
* CWE: ~7/5 = 600.0000{{c}}, ~10/9 = 175.6839{{c}}
 
{{Optimal ET sequence|legend=0| 14cf, 20cdef, 34d }}
 
Badness (Sintel): 1.33
 
==== 19-limit ====
Subgroup: 2.3.5.7.11.13.17.19
 
Comma list: 50/49, 78/77, 85/84, 99/98, 135/133, 243/242
 
Mapping: {{mapping| 2 2 2 3 4 3 7 5 | 0 4 9 9 10 15 4 12 }}
 
Optimal tunings:
* WE: ~7/5 = 599.6682{{c}}, ~10/9 = 175.5994{{c}}
* CWE: ~7/5 = 600.0000{{c}}, ~10/9 = 175.6190{{c}}
 
{{Optimal ET sequence|legend=0| 14cf, 20cdefhh, 34dh, 48f }}
 
Badness (Sintel): 1.28
 
=== Weasly ===
{{Todo|review|unify precision}}
The alternative extension uses the same mapping of 13 as in tetracot, though many other intervals of 13 take more generators to reach as a result.
 
Subgroup: 2.3.5.7.11.13
 
Comma list: 50/49, 99/98, 144/143, 243/242


Optimal tuning (POTE): ~2 = 1\1, ~27/26 = 58.639
Mapping: {{mapping| 2 2 2 3 4 8 | 0 4 9 9 10 -2 }}


{{Optimal ET sequence|legend=1| 20cdef, 41 }}
Optimal tunings:
* WE: ~7/5 = 599.285{{c}}, ~10/9 = 175.641{{c}}
* CWE: ~7/5 = 600.000{{c}}, ~10/9 = 175.728{{c}}


Badness: 0.043645
{{Optimal ET sequence|legend=0| 14c, 20cde, 34d, 48 }}


Badness (Sintel): 1.72
==== 17-limit ====
Subgroup: 2.3.5.7.11.13.17
Comma list: 50/49, 85/84, 99/98, 144/143, 243/242
Mapping: {{mapping| 2 2 2 3 4 8 7 | 0 4 9 9 10 -2 4 }}
Optimal tunings:
* WE: ~7/5 = 599.494{{c}}, ~10/9 = 175.613{{c}}
* CWE: ~7/5 = 600.000{{c}}, ~10/9 = 175.681{{c}}
{{Optimal ET sequence|legend=0| 14c, 20cde, 34d, 48 }}
Badness (Sintel): 1.54
==== 19-limit ====
Subgroup: 2.3.5.7.11.13.17.19
Comma list: 50/49, 85/84, 99/98, 144/143, 190/189, 243/242
Mapping: {{mapping| 2 2 2 3 4 8 7 5 | 0 4 9 9 10 -2 4 12}}
Optimal tunings:
* WE: ~7/5 = 599.464{{c}}, ~10/9 = 175.523{{c}}
* CWE: ~7/5 = 600.000{{c}}, ~10/9 = 175.593{{c}}
{{Optimal ET sequence|legend=0| 14c, 34dh, 48 }}
Badness (Sintel): 1.48
== Other subgroup extensions ==
=== Tetracot (2.3.5.13) ===
Subgroup: 2.3.5.13
Comma list: 325/324, 512/507
Subgroup-val mapping: {{mapping| 1 1 1 4 | 0 4 9 -2 }}
Optimal tunings:
* WE: ~2 = 1198.8502{{c}}, ~10/9 = 176.2195{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~10/9 = 176.2975{{c}}
{{Optimal ET sequence|legend=0| 7, 20c, 27, 34, 245bff, 279bfff }}
Badness (Sintel): 0.551
=== Devisemi (2.3.5.19) ===
[[Subgroup]]: 2.3.5.19
[[Comma list]]: 361/360, 20000/19683
{{Mapping|legend=2| 1 1 1 3 | 0 8 18 17 }}
{{Mapping|legend=3| 1 1 1 0 0 0 0 3 | 0 8 18 0 0 0 0 17 }}
: mapping generators: ~2, ~20/19
[[Optimal tuning]]s:
* [[WE]]: ~2 = 1199.6900{{c}}, ~20/19 = 88.0541{{c}}
: [[error map]]: {{val| -0.310 +2.168 -1.649 -1.523 }}
* [[CWE]]: ~2 = 1200.0000{{c}}, ~20/19 = 88.0538{{c}}
: error map: {{val| 0.000 +2.475 -1.345 -0.598 }}
{{Optimal ET sequence|legend=1| 14c, 27, 41, 68, 109 }}
[[Badness]] (Sintel): 1.30
=== Devisemi (2.3.5.7.19) ===
Subgroup: 2.3.5.7.19
Comma list: 190/189, 245/243, 361/360
Subgroup-val mapping: {{mapping| 1 1 1 2 3 | 0 8 18 11 17 }}
Gencom mapping: {{mapping| 1 1 1 2 0 0 0 3 | 0 8 18 11 0 0 0 17 }}
Optimal tunings:
* WE: ~2 = 1199.7591{{c}}, ~20/19 = 88.0570{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~20/19 = 88.0564{{c}}
{{Optimal ET sequence|legend=0| 14c, 27, 41, 68, 109 }}
Badness (Sintel): 0.508
== Notes ==
<references group="note"/>
== References ==
<references/>
[[Category:Tetracot family| ]] <!-- main article -->
[[Category:Temperament families]]
[[Category:Temperament families]]
[[Category:Tetracot family| ]] <!-- main article -->
[[Category:Catalogs of rank-2 temperaments]]
[[Category:Rank 2]]
[[Category:Listen]]

Latest revision as of 12:24, 14 August 2026

This is a list showing technical temperament data. For an explanation of what information is shown here, you may look at the technical data guide for regular temperaments.

The parent of the tetracot family is tetracot, the 5-limit temperament tempering out the tetracot comma (ratio: 20000/19683, monzo: [5 -9 4⟩).

Tetracot

Main article: Tetracot

The generator of tetracot is ~10/9, and that four of these give ~3/2. In fact, (10/9)4 = (20000/19683)⋅(3/2). We also have (10/9)9 = (20000/19683)2⋅(5/2). From this it is evident we should flatten the generator a bit, and 34edo does this and makes for a recommendable tuning. Another possibility is to use (5/2)1/9 for a generator. The 13-note mos gives enough space for eight triads, with the 20-note mos supplying many more.

The name comes from members of the Araucaria family of conifers, which have four cotyledons (though sometimes these are fused).

Subgroup: 2.3.5

Comma list: 20000/19683

Mapping: [⟨1 1 1], ⟨0 4 9]]

Optimal tunings:

  • WE: ~2 = 1199.5586 ¢, ~10/9 = 176.0950 ¢
error map: ⟨-0.441 +1.984 -1.900]
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 176.0965 ¢
error map: ⟨0.000 +2.431 -1.445]

Minimax tuning:

unchanged-interval (eigenmonzo) basis: 2.5

Optimal ET sequence: 7, 20c, 27, 34, 75, 109

Badness (Sintel): 1.14

Overview to extensions

Subgroup extensions

Since the generator in all reasonable tunings is between 10/9 and 11/10, it is natural to extend tetracot to the 11-limit by tempering out (10/9)/(11/10) = 100/99. This gives the 2.3.5.11-subgroup version of tetracot, dispensing with 7. For this, 41edo can be used as a tuning.

Since 16/13 is shy of (10/9)2 by just 325/324, it is likewise natural to extend our winning streak by adding this to the list of commas. This gives us 2.3.5.11.13-subgroup tetracot, which tempers out 100/99, 144/143 and 243/242, with the S-expression-based comma list {S9/S11, S10, S12}.

Full 7-limit extensions

The second comma of the comma list defines which 7-limit family member we are looking at. 875/864, the keema, gives monkey. 225/224 gives bunya. 64/63 gives modus. 126/125 gives wollemia. These all use the same generators as tetracot.

245/243 gives octacot, which splits the generator in halves. 3125/3087 gives dodecacot, which splits the generator in thirds. 50/49 gives weasel, which splits the period in halves.

2.3.5.11 subgroup

Subgroup: 2.3.5.11

Comma list: 100/99, 243/242

Subgroup-val mapping: [⟨1 1 1 2], ⟨0 4 9 10]]

Optimal tunings:

  • WE: ~2 = 1199.3274 ¢, ~10/9 = 175.8862 ¢
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 175.8847 ¢

Optimal ET sequence: 7, 20ce, 27e, 34, 41, 75e

Badness (Sintel): 0.459

2.3.5.11.13 subgroup

Subgroup: 2.3.5.11.13

Comma list: 100/99, 144/143, 243/242

Subgroup-val mapping: [⟨1 1 1 2 4], ⟨0 4 9 10 -2]]

Optimal tunings:

  • WE: ~2 = 1198.6852 ¢, ~10/9 = 176.0034 ¢
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 176.0854 ¢

Optimal ET sequence: 7, 20ce, 27e, 34, 41, 75e, 109ef

Badness (Sintel): 0.489

Monkey

Main article: Monkey

Monkey tempers out the keema. The keema, 875/864, is the amount by which three just minor thirds fall short of 7/4, and tells us the ~7/4 of monkey is reached by three such minor thirds in succession. It can be described as the 34 & 41 temperament. 41edo is an excellent tuning for monkey, and has the effect of making monkey identical to bunya with the same tuning.

Subgroup: 2.3.5.7

Comma list: 875/864, 5120/5103

Mapping: [⟨1 1 1 5], ⟨0 4 9 -15]]

Optimal tunings:

  • WE: ~2 = 1200.7982 ¢, ~10/9 = 175.7757 ¢
error map: ⟨+0.798 +1.946 -3.534 -1.470]
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 175.6622 ¢
error map: ⟨0.000 +0.694 -5.354 -3.759]

Optimal ET sequence: 7, 34, 41

Badness (Sintel): 1.86

11-limit

Subgroup: 2.3.5.7.11

Comma list: 100/99, 243/242, 385/384

Mapping: [⟨1 1 1 5 2], ⟨0 4 9 -15 10]]

Optimal tunings:

  • WE: ~2 = 1200.3988 ¢, ~10/9 = 175.6287 ¢
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 175.5750 ¢

Optimal ET sequence: 7, 34, 41

Badness (Sintel): 1.28

13-limit

Subgroup: 2.3.5.7.11.13

Comma list: 100/99, 105/104, 144/143, 243/242

Mapping: [⟨1 1 1 5 2 4], ⟨0 4 9 -15 10 -2]]

Optimal tunings:

  • WE: ~2 = 1199.9206 ¢, ~10/9 = 175.6108 ¢
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 175.6217 ¢

Optimal ET sequence: 7, 34, 41

Badness (Sintel): 1.17

17-limit

Subgroup: 2.3.5.7.11.13.17

Comma list: 100/99, 105/104, 144/143, 154/153, 170/169

Mapping: [⟨1 1 1 5 2 4 6], ⟨0 4 9 -15 10 -2 -13]]

Optimal tunings:

  • WE: ~2 = 1199.5029 ¢, ~10/9 = 175.6832 ¢
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 175.7558 ¢

Optimal ET sequence: 7, 34, 41

Badness (Sintel): 1.32

19-limit

Subgroup: 2.3.5.7.11.13.17.19

Comma list: 100/99, 105/104, 144/143, 154/153, 170/169, 171/169

Mapping: [⟨1 1 1 5 2 4 6 6], ⟨0 4 9 -15 10 -2 -13 -12]]

Optimal tunings:

  • WE: ~2 = 1199.7318 ¢, ~10/9 = 175.6498 ¢
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 175.6901 ¢

Optimal ET sequence: 7, 34, 41

Badness (Sintel): 1.35

Bunya

Main article: Bunya

Bunya adds 225/224 to the list of commas and may be described as the 34d & 41 temperament. 41edo can again be used as a tuning, in which case it is the same as monkey. However, bunya profits a little from a slightly sharper fifth. An excellent generator is 141/26, giving just ~7's and an improved value for ~5, at the cost of a slightly sharper but still less-than-a-cent-sharp fifth, or even sharper yet: 17\116 with a fifth a cent and a half sharp, or 11\75 with a fifth two cents sharp. Octave stretching, if employed, also serves to distinguish bunya from monkey, as its octaves should be stretched considerably less.

Subgroup: 2.3.5.7

Comma list: 225/224, 15625/15309

Mapping: [⟨1 1 1 -1], ⟨0 4 9 26]]

Optimal tunings:

  • WE: ~2 = 1200.2991 ¢, ~10/9 = 175.7844 ¢
error map: ⟨+0.299 +1.482 -3.955 +1.270]
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 175.7567 ¢
error map: ⟨0.000 +1.072 -4.503 +0.849]

Optimal ET sequence: 7d, …, 34d, 41, 116, 157c, 198c

Badness (Sintel): 1.59

11-limit

Subgroup: 2.3.5.7.11

Comma list: 100/99, 225/224, 243/242

Mapping: [⟨1 1 1 -1 2], ⟨0 4 9 26 10]]

Optimal tunings:

  • WE: ~2 = 1199.7481 ¢, ~10/9 = 175.7401 ¢
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 175.7637 ¢

Optimal ET sequence: 7d, …, 34d, 41, 116e

Badness (Sintel): 1.04

13-limit

Subgroup: 2.3.5.7.11.13

Comma list: 100/99, 144/143, 225/224, 243/242

Mapping: [⟨1 1 1 -1 2 4], ⟨0 4 9 26 10 -2]]

Optimal tunings:

  • WE: ~2 = 1199.1044 ¢, ~10/9 = 175.7545 ¢
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 175.8526 ¢

Optimal ET sequence: 7d, 34d, 41, 116ef

Badness (Sintel): 1.03

17-limit

Subgroup: 2.3.5.7.11.13.17

Comma list: 100/99, 120/119, 144/143, 170/169, 225/224

Mapping: [⟨1 1 1 -1 2 4 6], ⟨0 4 9 26 10 -2 -13]]

Optimal tunings:

  • WE: ~2 = 1198.7905 ¢, ~10/9 = 175.7757 ¢
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 175.9302 ¢

Optimal ET sequence: 34d, 41, 75e

Badness (Sintel): 1.19

19-limit

Subgroup: 2.3.5.7.11.13.17.19

Comma list: 100/99, 120/119, 144/143, 170/169, 190/189, 225/224

Mapping: [⟨1 1 1 -1 2 4 6 0], ⟨0 4 9 26 10 -2 -13 29]]

Optimal tunings:

  • WE: ~2 = 1198.7904 ¢, ~10/9 = 175.7755 ¢
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 175.9287 ¢

Optimal ET sequence: 34dh, 41, 75e

Badness (Sintel): 1.18

Modus

Main article: Modus

Modus tempers out 64/63 as well as 4375/4374, and may be described as the 27 & 34d temperament. While less accurate than monkey or bunya, it is nonetheless very useful because it is simpler and because of the harmonic puns it possesses. 27edo, 34edo and 61edo can all be used as tunings.

Subgroup: 2.3.5.7

Comma list: 64/63, 4375/4374

Mapping: [⟨1 1 1 4], ⟨0 4 9 -8]]

Optimal tunings:

  • WE: ~2 = 1196.7884 ¢, ~10/9 = 176.7292 ¢
error map: ⟨-3.212 +1.750 +1.038 +4.494]
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 177.1188 ¢
error map: ⟨0.000 +6.520 +7.755 +14.224]

Optimal ET sequence: 7, 20c, 27, 61d, 88bcd, 149bccddd

Badness (Sintel): 1.73

11-limit

Subgroup: 2.3.5.7.11

Comma list: 64/63, 100/99, 243/242

Mapping: [⟨1 1 1 4 2], ⟨0 4 9 -8 10]]

Optimal tunings:

  • WE: ~2 = 1196.4227 ¢, ~10/9 = 176.5252 ¢
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 176.9286 ¢

Optimal ET sequence: 7, 20ce, 27e, 34d, 61de

Badness (Sintel): 1.16

13-limit

Subgroup: 2.3.5.7.11.13

Comma list: 64/63, 78/77, 100/99, 144/143

Mapping: [⟨1 1 1 4 2 4], ⟨0 4 9 -8 10 -2]]

Optimal tunings:

  • WE: ~2 = 1196.8686 ¢, ~10/9 = 176.4915 ¢
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 176.8735 ¢

Optimal ET sequence: 7, 20ce, 27e, 34d, 61de

Badness (Sintel): 0.984

17-limit

Subgroup: 2.3.5.7.11.13.17

Comma list: 64/63, 78/77, 100/99, 120/119, 144/143

Mapping: [⟨1 1 1 4 2 4 1], ⟨0 4 9 -8 10 -2 21]]

Optimal tunings:

  • WE: ~2 = 1196.8783 ¢, ~10/9 = 176.5241 ¢
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 176.8969 ¢

Optimal ET sequence: 7g, …, 27eg, 34d

Badness (Sintel): 1.10

19-limit

Subgroup: 2.3.5.7.11.13.17.19

Comma list: 64/63, 78/77, 96/95, 100/99, 120/119, 144/143

Mapping: [⟨1 1 1 4 2 4 1 5], ⟨0 4 9 -8 10 -2 21 -5]]

Optimal tunings:

  • WE: ~2 = 1196.6939 ¢, ~10/9 = 176.5426 ¢
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 176.9645 ¢

Optimal ET sequence: 7g, …, 27eg, 34dh, 61degh

Badness (Sintel): 1.09

Ponens

The error of 11 is about the same as that of modus, but flat instead of sharp, and much more abundant. Since the other primes are all sharp, however, this leads to a much larger error for other intervals involving 11.

Subgroup: 2.3.5.7.11

Comma list: 55/54, 64/63, 363/350

Mapping: [⟨1 1 1 4 3], ⟨0 4 9 -8 3]]

Optimal tunings:

  • WE: ~2 = 1198.5026 ¢, ~10/9 = 176.9786 ¢
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 177.1589 ¢

Optimal ET sequence: 7, 20c, 27

Badness (Sintel): 2.09

13-limit

Subgroup: 2.3.5.7.11.13

Comma list: 55/54, 64/63, 66/65, 143/140

Mapping: [⟨1 1 1 4 3 4], ⟨0 4 9 -8 3 -2]]

Optimal tunings:

  • WE: ~2 = 1198.5149 ¢, ~10/9 = 176.9778 ¢
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 177.1681 ¢

Optimal ET sequence: 7, 20c, 27

Badness (Sintel): 1.61

17-limit

Subgroup: 2.3.5.7.11.13.17

Comma list: 52/51, 55/54, 64/63, 66/65, 143/140

Mapping: [⟨1 1 1 4 3 4 5], ⟨0 4 9 -8 3 -2 -6]]

Optimal tunings:

  • WE: ~2 = 1197.4542 ¢, ~10/9 = 177.1828 ¢
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 177.5355 ¢

Optimal ET sequence: 7, 20c

Badness (Sintel): 1.79

19-limit

Subgroup: 2.3.5.7.11.13.17.19

Comma list: 52/51, 55/54, 64/63, 66/65, 77/76, 143/140

Mapping: [⟨1 1 1 4 3 4 5 5], ⟨0 4 9 -8 3 -2 -6 -5]]

Optimal tunings:

  • WE: ~2 = 1197.3233 ¢, ~10/9 = 177.2025 ¢
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 177.5878 ¢

Optimal ET sequence: 7, 20c

Badness (Sintel): 1.70

Wollemia

Main article: Wollemia

Wollemia tempers out 126/125 as well as 2240/2187, and may be described as the 27 & 34 temperament. 27edo may be recommended as a tuning, in which case it is identical to modus with the same tuning.

Subgroup: 2.3.5.7

Comma list: 126/125, 2240/2187

Mapping: [⟨1 1 1 0], ⟨0 4 9 19]]

Optimal tunings:

  • WE: ~2 = 1197.6555 ¢, ~10/9 = 177.0104 ¢
error map: ⟨-2.345 +3.742 +4.435 -5.628]
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 177.1667 ¢
error map: ⟨0.000 +6.712 +8.186 -2.659]

Optimal ET sequence: 7d, 20cd, 27, 61, 88bc, 115bc

Badness (Sintel): 1.78

11-limit

Subgroup: 2.3.5.7.11

Comma list: 56/55, 100/99, 243/242

Mapping: [⟨1 1 1 0 2], ⟨0 4 9 19 10]]

Optimal tunings:

  • WE: ~2 = 1196.6462 ¢, ~10/9 = 176.9174 ¢
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 177.1370 ¢

Optimal ET sequence: 7d, 20cde, 27e

Badness (Sintel): 1.24

13-limit

Subgroup: 2.3.5.7.11.13

Comma list: 56/55, 91/90, 100/99, 243/242

Mapping: [⟨1 1 1 0 2 4], ⟨0 4 9 19 10 -2]]

Optimal tunings:

  • WE: ~2 = 1197.4576 ¢, ~10/9 = 176.8557 ¢
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 177.0949 ¢

Optimal ET sequence: 7d, 20cde, 27e

Badness (Sintel): 1.29

17-limit

Subgroup: 2.3.5.7.11.13.17

Comma list: 56/55, 91/90, 100/99, 136/135, 154/153

Mapping: [⟨1 1 1 0 2 4 1], ⟨0 4 9 19 10 -2 21]]

Optimal tunings:

  • WE: ~2 = 1197.4770 ¢, ~10/9 = 176.7733 ¢
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 177.0123 ¢

Optimal ET sequence: 7dg, 27eg

Badness (Sintel): 1.25

19-limit

Subgroup: 2.3.5.7.11.13.17.19

Comma list: 56/55, 76/75, 91/90, 100/99, 136/135, 154/153

Mapping: [⟨1 1 1 0 2 4 1 1], ⟨0 4 9 19 10 -2 21 22]]

Optimal tunings:

  • WE: ~2 = 1197.4380 ¢, ~10/9 = 176.8774 ¢
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 177.1216 ¢

Optimal ET sequence: 7dgh, 27eg

Badness (Sintel): 1.28

Octacot

See also: Chords of octacot

Octacot splits the difference between the monkey and bunya mappings for 7 by cutting the generator in half. It adds 245/243 to the normal comma list, and also tempers out 2401/2400. It may also be described as 41 & 68. 68edo or 109edo can be used as tunings, as can (5/2)1/18, which gives just major thirds. Another tuning is 150edo, which has a generator, 11\150, of exactly 88 cents. This relates octacot to the 88cET non-octave temperament, which like Carlos Alpha arguably makes more sense viewed as part of a rank-2 temperament with octaves rather than rank-1 without them.

Once again and for the same reasons, it is natural to add 100/99 and 325/324 to the list of commas. Generators of 3\41, 8\109 and 11\150 (88 cents) are all good choices for the 7, 11 and 13 limits.

Subgroup: 2.3.5.7

Comma list: 245/243, 2401/2400

Mapping: [⟨1 1 1 2], ⟨0 8 18 11]]

Optimal tunings:

  • WE: ~2 = 1199.6782 ¢, ~21/20 = 88.0528 ¢
error map: ⟨-0.322 +2.145 -1.686 -0.889]
  • CWE: ~2 = 1200.0000 ¢, ~21/20 = 88.0525 ¢
error map: ⟨0.000 +2.465 -1.369 -0.248]

Optimal ET sequence: 14c, 27, 41, 68, 109

Badness (Sintel): 0.857

11-limit

Subgroup: 2.3.5.7.11

Comma list: 100/99, 243/242, 245/242

Mapping: [⟨1 1 1 2 2], ⟨0 8 18 11 20]]

Optimal tunings:

  • WE: ~2 = 1199.6025 ¢, ~21/20 = 87.9460 ¢
  • CWE: ~2 = 1200.0000 ¢, ~21/20 = 87.9453 ¢

Optimal ET sequence: 14c, 27e, 41, 109e

Badness (Sintel): 0.796

13-limit

Subgroup: 2.3.5.7.11.13

Comma list: 100/99, 144/143, 196/195, 243/242

Mapping: [⟨1 1 1 2 2 4], ⟨0 8 18 11 20 -4]]

Optimal tunings:

  • WE: ~2 = 1198.8609 ¢, ~21/20 = 87.0219 ¢
  • CWE: ~2 = 1200.0000 ¢, ~21/20 = 88.0557 ¢

Optimal ET sequence: 14c, 27e, 41, 68e, 109ef

Badness (Sintel): 0.962

17-limit

Subgroup: 2.3.5.7.11.13.17

Comma list: 100/99, 120/119, 144/143, 154/153, 189/187

Mapping: [⟨1 1 1 2 2 4 3], ⟨0 8 18 11 20 -4 15]]

Optimal tunings:

  • WE: ~2 = 1198.4494 ¢, ~21/20 = 87.9878 ¢
  • CWE: ~2 = 1200.0000 ¢, ~21/20 = 88.0324 ¢

Optimal ET sequence: 14c, 27eg, 41, 68egg

Badness (Sintel): 1.07

19-limit

Subgroup: 2.3.5.7.11.13.17.19

Comma list: 100/99, 120/119, 133/132, 144/143, 154/153, 189/187

Mapping: [⟨1 1 1 2 2 4 3 3], ⟨0 8 18 11 20 -4 15 17]]

Optimal tunings:

  • WE: ~2 = 1198.5995 ¢, ~20/19 = 88.0081 ¢
  • CWE: ~2 = 1200.0000 ¢, ~20/19 = 88.0471 ¢

Optimal ET sequence: 14c, 27eg, 41, 68egg

Badness (Sintel): 1.01

Octocat

Subgroup: 2.3.5.7.11.13

Comma list: 78/77, 91/90, 100/99, 245/242

Mapping: [⟨1 1 1 2 2 2], ⟨0 8 18 11 20 23]]

Optimal tunings:

  • WE: ~2 = 1199.4441 ¢, ~21/20 = 88.1380 ¢
  • CWE: ~2 = 1200.0000 ¢, ~21/20 = 88.1375 ¢

Optimal ET sequence: 14cf, 27e, 41f

Badness (Sintel): 1.14

17-limit

Subgroup: 2.3.5.7.11.13.17

Comma list: 52/51, 78/77, 91/90, 100/99, 189/187

Mapping: [⟨1 1 1 2 2 2 3], ⟨0 8 18 11 20 23 15]]

Optimal tunings:

  • WE: ~2 = 1198.4257 ¢, ~21/20 = 88.1636 ¢
  • CWE: ~2 = 1200.0000 ¢, ~21/20 = 88.1642 ¢

Optimal ET sequence: 14cf, 27eg

Badness (Sintel): 1.19

19-limit

Subgroup: 2.3.5.7.11.13.17.19

Comma list: 52/51, 78/77, 91/90, 100/99, 133/132, 189/187

Mapping: [⟨1 1 1 2 2 2 3 3], ⟨0 8 18 11 20 23 15 17]]

Optimal tunings:

  • WE: ~2 = 1198.5748 ¢, ~20/19 = 88.1631 ¢
  • CWE: ~2 = 1200.0000 ¢, ~20/19 = 88.1637 ¢

Optimal ET sequence: 14cf, 27eg

Badness (Sintel): 1.09

Octopod

Subgroup: 2.3.5.7.11.13

Comma list: 100/99, 105/104, 243/242, 245/242

Mapping: [⟨1 1 1 2 2 1], ⟨0 8 18 11 20 37]]

Optimal tunings:

  • WE: ~2 = 1200.5116 ¢, ~21/20 = 87.7346 ¢
  • CWE: ~2 = 1200.0000 ¢, ~21/20 = 87.7257 ¢

Optimal ET sequence: 14cf, 27eff, 41

Badness (Sintel): 1.17

17-limit

Subgroup: 2.3.5.7.11.13.17

Comma list: 100/99, 105/104, 120/119, 154/153, 243/242

Mapping: [⟨1 1 1 2 2 1 3], ⟨0 8 18 11 20 37 15]]

Optimal tunings:

  • WE: ~2 = 1199.6667 ¢, ~21/20 = 87.7494 ¢
  • CWE: ~2 = 1200.0000 ¢, ~21/20 = 87.7559 ¢

Optimal ET sequence: 14cf, 27effg, 41

Badness (Sintel): 1.26

19-limit

Subgroup: 2.3.5.7.11.13.17.19

Comma list: 100/99, 105/104, 120/119, 133/132, 154/153, 209/208

Mapping: [⟨1 1 1 2 2 1 3 3], ⟨0 8 18 11 20 37 15 17]]

Optimal tunings:

  • WE: ~2 = 1199.9909 ¢, ~20/19 = 87.7474 ¢
  • CWE: ~2 = 1200.0000 ¢, ~20/19 = 87.7476 ¢

Optimal ET sequence: 14cf, 27effg, 41

Badness (Sintel): 1.19

Dificot

Subgroup: 2.3.5.7.11.13

Comma list: 100/99, 243/242, 245/242, 343/338

Mapping: [⟨1 -7 -17 -9 -18 -14], ⟨0 16 36 22 40 33]]

mapping generators: ~2, ~13/9

Optimal tunings:

  • WE: ~2 = 1199.1496 ¢, ~13/9 = 643.5328 ¢
  • CWE: ~2 = 1200.0000 ¢, ~13/9 = 643.9567 ¢

Optimal ET sequence: 13cdeef, 28ccdef, 41

Badness (Sintel): 2.14

October

Subgroup: 2.3.5.7.11

Comma list: 245/243, 385/384, 1375/1372

Mapping: [⟨1 1 1 2 5], ⟨0 8 18 11 -21]]

Optimal tunings:

  • WE: ~2 = 1199.8843 ¢, ~21/20 = 88.0261 ¢
  • CWE: ~2 = 1200.0000 ¢, ~21/20 = 88.0329 ¢

Optimal ET sequence: 27, 41, 68, 109, 150, 259

Badness (Sintel): 1.31

13-limit

Subgroup: 2.3.5.7.11.13

Comma list: 196/195, 245/243, 275/273, 385/384

Mapping: [⟨1 1 1 2 5 4], ⟨0 8 18 11 -21 -4]]

Optimal tunings:

  • WE: ~2 = 1199.5060 ¢, ~21/20 = 88.0388 ¢
  • CWE: ~2 = 1200.0000 ¢, ~21/20 = 88.0697 ¢

Optimal ET sequence: 27, 41, 68, 109f

Badness (Sintel): 1.29

17-limit

Subgroup: 2.3.5.7.11.13.17

Comma list: 154/153, 170/169, 196/195, 245/243, 256/255

Mapping: [⟨1 1 1 2 5 4 6], ⟨0 8 18 11 -21 -4 -26]]

Optimal tunings:

  • WE: ~2 = 1199.3845 ¢, ~21/20 = 88.0589 ¢
  • CWE: ~2 = 1200.0000 ¢, ~21/20 = 88.1027 ¢

Optimal ET sequence: 27, 41, 68, 109f

Badness (Sintel): 1.37

19-limit

Subgroup: 2.3.5.7.11.13.17.19

Comma list: 154/153, 170/169, 190/189, 196/195, 209/208, 245/243

Mapping: [⟨1 1 1 2 5 4 6 3], ⟨0 8 18 11 -21 -4 -26 17]]

Optimal tunings:

  • WE: ~2 = 1199.4449 ¢, ~20/19 = 88.0723 ¢
  • CWE: ~2 = 1200.0000 ¢, ~20/19 = 88.1107 ¢

Optimal ET sequence: 27, 41, 68, 109f

Badness (Sintel): 1.25

Dodecacot

Subgroup: 2.3.5.7

Comma list: 3125/3087, 10976/10935

Mapping: [⟨1 1 1 1], ⟨0 12 27 37]]

mapping generators: ~2, ~28/27

Optimal tunings:

  • WE: ~2 = 1199.6912 ¢, ~28/27 = 58.6600 ¢
error map: ⟨-0.309 +1.657 -2.802 +1.287]
  • CWE: ~2 = 1200.0000 ¢, ~28/27 = 58.6624 ¢
error map: ⟨0.000 +1.993 -2.430 +1.681]

Optimal ET sequence: 20cd, 41, 143d, 184, 225

Badness (Sintel): 3.03

11-limit

Subgroup: 2.3.5.7.11

Comma list: 100/99, 243/242, 1375/1372

Mapping: [⟨1 1 1 1 2], ⟨0 12 27 37 30]]

Optimal tunings:

  • WE: ~2 = 1199.3125 ¢, ~28/27 = 58.6317 ¢
  • CWE: ~2 = 1200.0000 ¢, ~28/27 = 58.6360 ¢

Optimal ET sequence: 20cde, 41

Badness (Sintel): 1.97

13-limit

Subgroup: 2.3.5.7.11.13

Comma list: 100/99, 196/195, 243/242, 275/273

Mapping: [⟨1 1 1 1 2 2], ⟨0 12 27 37 30 35]]

Optimal tunings:

  • WE: ~2 = 1199.0713 ¢, ~28/27 = 58.5932 ¢
  • CWE: ~2 = 1200.0000 ¢, ~28/27 = 58.5982 ¢

Optimal ET sequence: 20cdef, 41

Badness (Sintel): 1.80

Weasel

See also: No-fives subgroup temperaments § Byhearted

Weasel, named by Mike Battaglia in 2012[1] and also known as byhearted[note 1], tempers out 50/49 and splits the octave in halves; its ploidacot is diploid tetracot.

Subgroup: 2.3.5.7

Comma list: 50/49, 19683/19208

Mapping: [⟨2 2 2 3], ⟨0 4 9 9]]

mapping generators: ~7/5, ~10/9

Optimal tunings:

  • WE: ~7/5 = 599.6934 ¢, ~10/9 = 175.5626 ¢
error map: ⟨-0.613 -0.318 -6.864 +10.318]
  • CWE: ~7/5 = 1200.0000 ¢, ~10/9 = 175.5632 ¢
error map: ⟨0.000 +0.298 -6.245 +11.243]

Optimal ET sequence: 14c, 34d, 48

Badness (Sintel): 2.82

11-limit

Subgroup: 2.3.5.7.11

Comma list: 50/49, 99/98, 243/242

Mapping: [⟨2 2 2 3 4], ⟨0 4 9 9 10]]

Optimal tunings:

  • WE: ~7/5 = 599.6525 ¢, ~10/9 = 175.5103 ¢
  • CWE: ~7/5 = 600.0000 ¢, ~10/9 = 175.5086 ¢

Optimal ET sequence: 14c, 34d, 48

Badness (Sintel): 1.45

13-limit

The canonical mapping finds 13/8 at +15 generators rather than using the regular tetracot mapping, in order to find 15/13 as being half of 4/3.

Subgroup: 2.3.5.7.11.13

Comma list: 50/49, 78/77, 99/98, 243/242

Mapping: [⟨2 2 2 3 4 3], ⟨0 4 9 9 10 15]]

Optimal tunings:

  • WE: ~7/5 = 599.4539 ¢, ~10/9 = 175.7393 ¢
  • CWE: ~7/5 = 600.0000 ¢, ~10/9 = 175.7502 ¢

Optimal ET sequence: 14cf, 20cdef, 34d

Badness (Sintel): 1.32

17-limit

Subgroup: 2.3.5.7.11.13.17

Comma list: 50/49, 78/77, 85/84, 99/98, 243/242

Mapping: [⟨2 2 2 3 4 3 7], ⟨0 4 9 9 10 15 4]]

Optimal tunings:

  • WE: ~7/5 = 599.7509 ¢, ~10/9 = 175.6684 ¢
  • CWE: ~7/5 = 600.0000 ¢, ~10/9 = 175.6839 ¢

Optimal ET sequence: 14cf, 20cdef, 34d

Badness (Sintel): 1.33

19-limit

Subgroup: 2.3.5.7.11.13.17.19

Comma list: 50/49, 78/77, 85/84, 99/98, 135/133, 243/242

Mapping: [⟨2 2 2 3 4 3 7 5], ⟨0 4 9 9 10 15 4 12]]

Optimal tunings:

  • WE: ~7/5 = 599.6682 ¢, ~10/9 = 175.5994 ¢
  • CWE: ~7/5 = 600.0000 ¢, ~10/9 = 175.6190 ¢

Optimal ET sequence: 14cf, 20cdefhh, 34dh, 48f

Badness (Sintel): 1.28

Weasly

The alternative extension uses the same mapping of 13 as in tetracot, though many other intervals of 13 take more generators to reach as a result.

Subgroup: 2.3.5.7.11.13

Comma list: 50/49, 99/98, 144/143, 243/242

Mapping: [⟨2 2 2 3 4 8], ⟨0 4 9 9 10 -2]]

Optimal tunings:

  • WE: ~7/5 = 599.285 ¢, ~10/9 = 175.641 ¢
  • CWE: ~7/5 = 600.000 ¢, ~10/9 = 175.728 ¢

Optimal ET sequence: 14c, 20cde, 34d, 48

Badness (Sintel): 1.72

17-limit

Subgroup: 2.3.5.7.11.13.17

Comma list: 50/49, 85/84, 99/98, 144/143, 243/242

Mapping: [⟨2 2 2 3 4 8 7], ⟨0 4 9 9 10 -2 4]]

Optimal tunings:

  • WE: ~7/5 = 599.494 ¢, ~10/9 = 175.613 ¢
  • CWE: ~7/5 = 600.000 ¢, ~10/9 = 175.681 ¢

Optimal ET sequence: 14c, 20cde, 34d, 48

Badness (Sintel): 1.54

19-limit

Subgroup: 2.3.5.7.11.13.17.19

Comma list: 50/49, 85/84, 99/98, 144/143, 190/189, 243/242

Mapping: [⟨2 2 2 3 4 8 7 5], ⟨0 4 9 9 10 -2 4 12]]

Optimal tunings:

  • WE: ~7/5 = 599.464 ¢, ~10/9 = 175.523 ¢
  • CWE: ~7/5 = 600.000 ¢, ~10/9 = 175.593 ¢

Optimal ET sequence: 14c, 34dh, 48

Badness (Sintel): 1.48

Other subgroup extensions

Tetracot (2.3.5.13)

Subgroup: 2.3.5.13

Comma list: 325/324, 512/507

Subgroup-val mapping: [⟨1 1 1 4], ⟨0 4 9 -2]]

Optimal tunings:

  • WE: ~2 = 1198.8502 ¢, ~10/9 = 176.2195 ¢
  • CWE: ~2 = 1200.0000 ¢, ~10/9 = 176.2975 ¢

Optimal ET sequence: 7, 20c, 27, 34, 245bff, 279bfff

Badness (Sintel): 0.551

Devisemi (2.3.5.19)

Subgroup: 2.3.5.19

Comma list: 361/360, 20000/19683

Subgroup-val mapping: [⟨1 1 1 3], ⟨0 8 18 17]]

Gencom mapping: [⟨1 1 1 0 0 0 0 3], ⟨0 8 18 0 0 0 0 17]]

mapping generators: ~2, ~20/19

Optimal tunings:

  • WE: ~2 = 1199.6900 ¢, ~20/19 = 88.0541 ¢
error map: ⟨-0.310 +2.168 -1.649 -1.523]
  • CWE: ~2 = 1200.0000 ¢, ~20/19 = 88.0538 ¢
error map: ⟨0.000 +2.475 -1.345 -0.598]

Optimal ET sequence: 14c, 27, 41, 68, 109

Badness (Sintel): 1.30

Devisemi (2.3.5.7.19)

Subgroup: 2.3.5.7.19

Comma list: 190/189, 245/243, 361/360

Subgroup-val mapping: [⟨1 1 1 2 3], ⟨0 8 18 11 17]]

Gencom mapping: [⟨1 1 1 2 0 0 0 3], ⟨0 8 18 11 0 0 0 17]]

Optimal tunings:

  • WE: ~2 = 1199.7591 ¢, ~20/19 = 88.0570 ¢
  • CWE: ~2 = 1200.0000 ¢, ~20/19 = 88.0564 ¢

Optimal ET sequence: 14c, 27, 41, 68, 109

Badness (Sintel): 0.508

Notes

  1. ↑ Alias by Xenllium.

References

  1. ↑ Yahoo! Tuning Group | This temperament should have a name
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