Xenharmonic Wiki

Very low accuracy temperaments: Difference between revisions

← Older edit
VisualWikitext
No edit summary
Mujannab -> sept and move it here
 
(34 intermediate revisions by 8 users not shown)
Line 1: Line 1:
{{Technical data page}}
{{Technical data page}}
Below are listed some '''very low accuracy temperaments'''. Temperaments with exceedingly low accuracy such as these tend to temper out very large intervals such as 9/8, 10/9, 32/27, or 15/14, equating wildly different interval sizes with [[semitone (interval size measure)|semitone]]-level or even greater [[error]]s. As a result, all of them are right on or even beyond the edge of what can be sensibly called a temperament at all; that is to say, they are [[exotemperament]]s.
Below are listed some '''very low accuracy temperaments'''. Temperaments with exceedingly low accuracy such as these tend to [[tempering out|temper out]] very large intervals such as [[9/8]], [[10/9]], [[32/27]], or [[15/14]], equating wildly different interval sizes with [[semitone (interval size measure)|semitone]]-level or even greater [[error]]s, and often swapping the sizes of simple ratios compared to just intonation. As a result, all of them are right on or even beyond the edge of what can be sensibly called a temperament at all; that is to say, they are [[exotemperament]]s.


== Antitonic ==
== Antitonic ==
This temperament is characterized by [[9/8]] being tempering out, and has been termed a "troll temperament" by its namers. It is named on account of 4/3 and 3/2 both being represented by the 600 cent half octave, which, in terms of diatonic function, serves as an antitonic. Surprisingly, it has extensions all the way up to the 11-limit, as confirmed by the data from [http://x31eq.com/cgi-bin/rt.cgi?limit=11&ets=2_4p&tuning=po x31eq]. The original 5-limit is basically the 3-limit music of [[2edo]] with the addition of harmonic 5 represented by an independent generator.  
This temperament is characterized by [[9/8]] being tempered out and has been termed a "troll temperament" by its namers. Its [[ploidacot]] is diploid acot. It is named on account of 4/3 and 3/2 both being represented by the 600-cent half octave, which, in terms of diatonic function, serves as an antitonic. The 7-limit extension tempers out 15/14 and 21/20, equating 5/4 with 7/6 and 6/5 with 8/7. The 11-limit extension tempers out 12/11 and 33/32. The original 5-limit is basically the 3-limit music of [[2edo]] with the addition of harmonic 5 represented by an independent generator.  


[[Subgroup]]: 2.3.5
[[Subgroup]]: 2.3.5
Line 14: Line 14:


[[Optimal tuning]]s:  
[[Optimal tuning]]s:  
* [[CTE]]: ~3/2 = 600.000, ~5/4 = 386.314 (~6/5 = 213.686)
* [[WE]]: ~3/2 = 615.125{{c}}, ~5/4 = 321.597{{c}} (~6/5 = 293.528{{c}})
: [[error map]]: {{val| 0.000 -101.955 0.000 }}
: [[error map]]: {{val| +30.250 -56.581 -4.217 }}
* [[POTE]]: ~3/2 = 600.000, ~5/4 = 313.690 (~6/5 = 286.310)
* [[CWE]]: ~3/2 = 600.000{{c}}, ~5/4 = 336.527{{c}} (~6/5 = 263.473{{c}})
: error map: {{val| 0.000 -101.955 -72.624 }}
: error map: {{val| 0.000 -101.955 -49.787 }}


{{Optimal ET sequence|legend=1| 2, 4 }}
{{Optimal ET sequence|legend=1| 2, 4 }}


[[Badness]] (Smith): 0.021647
[[Badness]] (Sintel): 0.508


; Music
; Music
* [[:File:Antitonic(8).mp3|''Antitonic(8)'']] (2024) – short composition by [[Wensik]] in POTE-tuned 5-limit antitonic using an 8-note ternary scale.
* [[:File:Antitonic(8).mp3|''Antitonic(8)'']] (2024) – short composition by [[Wensik]] in POTE-tuned 5-limit antitonic using an 8-note ternary scale.


=== 7-limit ===
=== Septimal antitonic ===
Subgroup: 2.3.5.7
Subgroup: 2.3.5.7


Line 34: Line 34:


Optimal tunings:  
Optimal tunings:  
* CTE: ~3/2 = 600.000, ~5/4 = 379.210 (~6/5 = 220.890)
* WE: ~3/2 = 614.759{{c}}, ~7/6 = 309.426{{c}} (~6/5 = 305.334{{c}})
* POTE: ~3/2 = 600.000, ~7/6 = 301.997 (~6/5 = 298.003)
* CWE: ~3/2 = 600.000{{c}}, ~7/6 = 326.047{{c}} (~6/5 = 273.953{{c}})


{{Optimal ET sequence|legend=0| 2, 4 }}
{{Optimal ET sequence|legend=0| 2, 4 }}


Badness (Smith): 0.019373
Badness (Sintel): 0.490


==== 11-limit ====
==== 11-limit ====
Line 49: Line 49:


Optimal tunings:  
Optimal tunings:  
* CTE: ~3/2 = 600.000, ~5/4 = 379.210 (~11/10 = 220.890)
* WE: ~3/2 = 606.293{{c}}, ~5/4 = 343.862{{c}} (~8/7 = 262.431{{c}})
* POTE: ~3/2 = 600.000, ~5/4 = 340.293 (~8/7 = 259.707)
* CWE: ~3/2 = 600.000{{c}}, ~5/4 = 348.102{{c}} (~8/7 = 251.898{{c}})


{{Optimal ET sequence|legend=0| 2, 4 }}
{{Optimal ET sequence|legend=0| 2, 4 }}


Badness (Smith): 0.021810
Badness (Sintel): 0.721


==== Antietam ====
==== Antietam ====
Line 64: Line 64:


Optimal tunings:  
Optimal tunings:  
* CTE: ~3/2 = 600.000, ~5/4 = 415.533 (~12/11 = 184.467)
* WE: ~3/2 = 616.135{{c}}, ~5/4 = 330.741{{c}} (~6/5 = 285.393{{c}})
* POTE: ~3/2 = 600.000, ~7/6 = 322.080 (~6/5 = 277.920)
* CWE: ~3/2 = 600.000{{c}}, ~5/4 = 349.843{{c}} (~8/7 = 250.157{{c}})


{{Optimal ET sequence|legend=0| 2, 4e }}
{{Optimal ET sequence|legend=0| 2, 4e }}


Badness (Smith): 0.018993
Badness (Sintel): 0.628


=== Antaeus ===
=== Antaeus ===
Line 79: Line 79:


Optimal tunings:  
Optimal tunings:  
* CTE: ~3/2 = 600.000, ~5/4 = 323.296 (~7/6 = 276.704)
* WE: ~3/2 = 614.854{{c}}, ~5/4 = 323.784{{c}} (~6/5 = 291.070{{c}})
* POTE: ~3/2 = 600.000, ~5/4 = 315.962 (~7/6 = 284.038)
* CWE: ~3/2 = 600.000{{c}}, ~5/4 = 317.349{{c}} (~6/5 = 282.651{{c}})


{{Optimal ET sequence|legend=0| 2d, 4 }}
{{Optimal ET sequence|legend=0| 2d, 4 }}


Badness (Smith): 0.037537
Badness (Sintel): 0.950


==== 11-limit ====
==== 11-limit ====
Line 94: Line 94:


Optimal tunings:  
Optimal tunings:  
* CTE: ~3/2 = 600.000, ~5/4 = 323.296 (~7/6 = 276.704)
* WE: ~3/2 = 609.311{{c}}, ~5/4 = 323.110{{c}} (~6/5 = 286.200{{c}})
* POTE: ~3/2 = 600.000, ~5/4 = 318.173 (~7/6 = 281.827)
* CWE: ~3/2 = 600.000{{c}}, ~5/4 = 318.904{{c}} (~6/5 = 281.096{{c}})


{{Optimal ET sequence|legend=0| 2d, 4 }}
{{Optimal ET sequence|legend=0| 2d, 4 }}


Badness (Smith): 0.033786
Badness (Sintel): 1.12


== Alteraugment ==
== Alteraugment ==
Alteraugment is like [[augmented]], but the generator provides 5/4 instead of 3/2. [[User:VectorGraphics|Vector Graphics]] suggests the name ''kinsborough'' for this temperament.
Alteraugment tempers out the [[32/27|Pythagorean minor third (32/27)]]. It is like [[augmented (temperament)|augmented]], but the period represents 4/3 instead of 5/4, and the generator in turn provides 5/4 instead of 3/2. Its ploidacot is triploid acot. [[User:VectorGraphics|Vector Graphics]] suggests the name ''kinsborough'' for this temperament.


[[Subgroup]]: 2.3.5
[[Subgroup]]: 2.3.5
Line 113: Line 113:


[[Optimal tuning]]s:  
[[Optimal tuning]]s:  
* [[CTE]]: ~4/3 = 400.000, ~5/4 = 386.314 (~16/15 = 13.686)
* [[WE]]: ~4/3 = 389.212{{c}}, ~5/4 = 447.530{{c}} (~10/9 = 58.318{{c}})
: [[error map]]: {{val| 0.000 +98.045 0.000 }}
: [[error map]]: {{val| -32.364 +44.105 -3.512 }}
* [[POTE]]: ~4/3 = 400.000, ~5/4 = 459.935 (~10/9 = 59.935)
* [[CWE]]: ~4/3 = 400.000{{c}}, ~5/4 = 434.191{{c}} (~15/16 = 34.191{{c}})
: error map: {{val| 0.000 +98.045 +73.621 }}
: error map: {{val| 0.000 +98.045 +47.878 }}


{{Optimal ET sequence|legend=1| 3, 12bcc, 15bbcc }}
{{Optimal ET sequence|legend=1| 3, 12bcc, 15bbcc }}


[[Badness]] (Smith): 0.078042
[[Badness]] (Sintel): 1.83


== Yo (2c & 3)  ==
== Antonian ==
This temperament family is characterized by the [[color notation|yo 2nd]] [[10/9]] being tempering out.
{{Main| Antonian }}
This temperament family is characterized by the [[color notation|yo 2nd]] ([[10/9]]) being tempered out. It identifies [[3/2]] with [[5/3]], [[4/3]] with [[6/5]], and [[5/4]] with [[9/8]].  


[[Subgroup]]: 2.3.5
[[Subgroup]]: 2.3.5
Line 132: Line 133:


[[Optimal tuning]]s:  
[[Optimal tuning]]s:  
* [[CTE]]: ~2 = 1200.000, ~3/2 = 761.310
* [[WE]]: ~2 = 1187.236{{c}}, ~3/2 = 767.716{{c}}
: [[error map]]: {{val| 0.000 +74.015 -34.374 }}
: [[error map]]: {{val| -12.764 +52.997 -63.645 }}
* [[POTE]]: ~2 = 1200.000, ~3/2 = 775.970
* [[CWE]]: ~2 = 1200.000{{c}}, ~3/2 = 767.718{{c}}
: error map: {{val| 0.000 +65.763 -50.878 }}
: error map: {{val| 0.000 +65.763 -50.877 }}
 
{{Optimal ET sequence|legend=1| 2c, 3 }}
 
[[Badness]] (Sintel): 0.392
 
=== Septimal antonian ===
{{See also| Trienstonic clan }}
 
Subgroup: 2.3.5.7


{{Optimal ET sequence|legend=1| 3, 11bc, 14bc, 17bb }}
Comma list: 10/9, 15/14


[[Badness]] (Smith): 0.016712
Mapping: {{mapping| 1 0 -1 -2 | 0 1 2 3 }}
 
Optimal tunings:
* WE: ~2 = 1193.691{{c}}, ~3/2 = 742.509{{c}}
* CWE: ~2 = 1200.000{{c}}, ~3/2 = 743.086{{c}}
 
{{Optimal ET sequence|legend=0| 2cd, 3d, 5c }}
 
Badness (Sintel): 0.606
 
=== Antonym ===
Subgroup: 2.3.5.7
 
Comma list: 7/6, 10/9
 
Mapping: {{mapping| 1 0 -1 1 | 0 1 2 1 }}
 
Optimal tunings:
* WE: ~2 = 1209.795{{c}}, ~3/2 = 765.995{{c}}
* CWE: ~2 = 1200.000{{c}}, ~3/2 = 765.949{{c}}
 
{{Optimal ET sequence|legend=0| 2cd, 3 }}
 
Badness (Sintel): 0.568
 
=== Antony ===
Subgroup: 2.3.5.7
 
Comma list: 8/7, 10/9
 
Mapping: {{mapping| 1 0 -1 3 | 0 1 2 0 }}
 
Optimal tunings:
* WE: ~2 = 1151.235{{c}}, ~3/2 = 789.399{{c}}
* CWE: ~2 = 1200.000{{c}}, ~3/2 = 800.996{{c}}
 
{{Optimal ET sequence|legend=0| 1c, 3d }}
 
Badness (Sintel): 0.720


=== Brutus ===
=== Brutus ===
Line 149: Line 197:


Optimal tunings:  
Optimal tunings:  
* CTE: ~2 = 1200.000, ~3/2 = 813.116
* WE: ~2 = 1158.982{{c}}, ~3/2 = 819.228{{c}}
* POTE: ~2 = 1200.000, ~3/2 = 848.221
* CWE: ~2 = 1200.000{{c}}, ~3/2 = 831.346{{c}}


{{Optimal ET sequence|legend=0| 3, 7bc }}
{{Optimal ET sequence|legend=0| 3, 7bc }}


Badness (Smith): 0.053389
Badness (Sintel): 1.35


=== Phlegyas ===
=== Phlegyas ===
{{See also| Archytas clan }}
Subgroup: 2.3.5.7
Subgroup: 2.3.5.7


Line 164: Line 214:


Optimal tunings:  
Optimal tunings:  
* CTE: ~2 = 1200.000, ~3/2 = 747.225
* WE: ~2 = 1206.510{{c}}, ~3/2 = 747.166{{c}}
* POTE: ~2 = 1200.000, ~3/2 = 743.135
* CWE: ~2 = 1200.000{{c}}, ~3/2 = 743.797{{c}}


{{Optimal ET sequence|legend=0| 3, 5c, 8c }}
{{Optimal ET sequence|legend=0| 3, 5c, 8c }}


Badness (Smith): 0.051293
Badness (Sintel): 1.30


=== Charon ===
=== Charon ===
{{See also| Jubilismic clan }}
Subgroup: 2.3.5.7
Subgroup: 2.3.5.7


Line 177: Line 229:


Mapping: {{mapping| 2 0 -2 -1 | 0 1 2 2 }}
Mapping: {{mapping| 2 0 -2 -1 | 0 1 2 2 }}
: mapping generators: ~7/5, ~3


Optimal tunings:  
Optimal tunings:  
* CTE: ~7/5 = 600.000, ~3/2 = 768.427 (~15/14 = 168.427)
* WE: ~7/5 = 593.832{{c}}, ~3/2 = 774.559{{c}} (~15/14 = 180.726{{c}})
* POTE: ~7/5 = 600.000, ~3/2 = 782.604 (~15/14 = 182.604)
* CWE: ~7/5 = 600.000{{c}}, ~3/2 = 774.466{{c}} (~15/14 = 174.466{{c}})


{{Optimal ET sequence|legend=0| 4bcd, 6 }}
{{Optimal ET sequence|legend=0| 4bcd, 6 }}


Badness (Smith): 0.056404
Badness (Sintel): 1.43


=== Nessus ===
=== Nessus ===
Line 194: Line 247:


Mapping: {{mapping| 1 0 -1 2 | 0 2 4 1 }}
Mapping: {{mapping| 1 0 -1 2 | 0 2 4 1 }}
: mapping generators: ~2, ~7/4
: mapping generators: ~2, ~7/4


Optimal tunings:  
Optimal tunings:  
* CTE: ~2 = 1200.000, ~7/4 = 980.335
* WE: ~2 = 1189.201{{c}}, ~7/4 = 978.002{{c}}
* POTE: ~2 = 1200.000, ~7/4 = 986.883
* CWE: ~2 = 1200.000{{c}}, ~7/4 = 983.918{{c}}


{{Optimal ET sequence|legend=0| 5c, 6 }}
{{Optimal ET sequence|legend=0| 5c, 6 }}


Badness (Smith): 0.059070
Badness (Sintel): 1.49


== Ternary ==
== Ternary ==
Line 217: Line 269:


[[Optimal tuning]]s:  
[[Optimal tuning]]s:  
* [[CTE]]: ~5/4 = 400.000, ~7/4 = 968.826 (~28/25 = 168.826)
* [[WE]]: ~5/4 = 391.796{{c}}, ~7/4 = 1012.806{{c}} (~15/14 = 162.582{{c}})
: [[error map]]: {{val| 0.000 +98.045 +13.686 0.000 }}
: [[error map]]: {{val| -24.612 +57.026 -43.741 -5.243 }}
* [[POTE]]: ~5/4 = 400.000, ~7/4 = 1034.013 (~15/14 = 165.987)
* [[CWE]]: ~5/4 = 400.000{{c}}, ~7/4 = 1016.378{{c}} (~8/7 = 183.622{{c}})
: error map: {{val| 0.000 +98.045 +13.686 +65.187 }}
: error map: {{val| 0.000 +98.045 +13.686 +47.552 }}


{{Optimal ET sequence|legend=1| 3d, 6, 9bd }}
{{Optimal ET sequence|legend=1| 3d, 6, 9bd }}


[[Badness]] (Smith): 0.028673
[[Badness]] (Sintel): 0.726


=== 11-limit ===
=== 11-limit ===
Line 234: Line 286:


Optimal tunings:  
Optimal tunings:  
* CTE: ~5/4 = 400.000, ~7/4 = 961.874 (~11/10 = 161.874)
* WE: ~5/4 = 391.788{{c}}, ~7/4 = 1011.942{{c}} (~12/11 = 163.422{{c}})
* POTE: ~5/4 = 400.000, ~7/4 = 1033.153 (~12/11 = 166.847)
* CWE: ~5/4 = 400.000{{c}}, ~7/4 = 1013.973{{c}} (~12/11 = 186.027{{c}})


{{Optimal ET sequence|legend=0| 3de, 6 }}
{{Optimal ET sequence|legend=0| 3de, 6 }}


Badness (Smith): 0.025592
Badness (Sintel): 0.846
 
== Quad ==
Quad is identical to [[4edo|4et]] in the 5-limit, but has an independent generator for prime 7.
 
[[Subgroup]]: 2.3.5.7
 
[[Comma list]]: 9/8, 25/24
 
{{Mapping|legend=1| 4 6 9 0 | 0 0 0 1 }}
 
[[Optimal tuning]]s:
* [[WE]]: ~6/5 = 308.074{{c}}, ~7/4 = 963.670{{c}}
: [[error map]]: {{val| +32.295 -53.513 -13.650 -5.150 }}
* [[CWE]]: ~6/5 = 300.000{{c}}, ~7/4 = 897.589{{c}}
: error map: {{val| 0.000 -101.955 -86.314 -71.236 }}
 
{{Optimal ET sequence|legend=1| 4 }}
 
[[Badness]] (Sintel): 1.16
 
== Quint ==
Quint preserves the 5-limit mapping of 5edo, and harmonic 7 is mapped to an independent generator. As harmonic 7 is way more accurately approximated than 5 by 5edo, this temperament provides little improvement to 5edo's 7-limit tuning, so in what way this temperament is useful remains unexplained. It would make much more sense to, for example, preserve the 2.3.7-subgroup structure of 5edo and give prime 5 an independent generator instead, which is exactly what [[blackwood]] does.
 
[[Subgroup]]: 2.3.5.7
 
[[Comma list]]: 16/15, 27/25
 
{{Mapping|legend=1| 5 8 12 0 | 0 0 0 1 }}
 
: Mapping generators: ~6/5, ~7
 
[[Optimal tuning]]s:
* [[WE]]: ~6/5 = 236.416, ~7/4 = 1002.701 (~28/27 = 57.038) <!-- Please review, last digit may be wrong -->
: [[error map]]: {{val| -17.921 -10.628 +50.676 -1.966 }}
* [[CWE]]: ~6/5 = 240.000, ~7/4 = 1005.135 (~28/27 = 45.135)
: error map: {{val| 0.000 +18.045 +93.686 +36.309 }}
 
{{Optimal ET sequence|legend=1| 5, 15ccd }}
 
[[Badness]] (Sintel): 1.22
 
== Sept ==
Sept preserves the 2.3.7-subgroup of mapping of 7edo, and harmonic 5 is mapped to an independent generator. As harmonic 5 is way more accurately approximated than 7 by 7edo, this temperament provides little improvement to 7edo's 7-limit tuning, so in what way this temperament is useful remains unexplained. It would make much more sense to, for example, preserve the 5-limit structure of 7edo and give prime 7 an independent generator instead, which is exactly what [[jamesbond]] does.
 
This temperament used to be known as ''mujannab''.
 
[[Subgroup]]: 2.3.5.7
 
[[Comma list]]: 54/49, 64/63
 
{{Mapping|legend=1| 7 11 0 20 | 0 0 1 0 }}
 
[[Optimal tuning]]s:
* [[WE]]: ~9/8 = 170.823{{c}}, ~5/4 = 393.792{{c}} (~15/14 = 52.145{{c}})
: [[error map]]: {{val| -4.236 -22.898 -0.994 +47.642 }}
* [[CWE]]: ~9/8 = 171.429{{c}}, ~5/4 = 392.719{{c}} (~15/14 = 49.862{{c}})
: error map: {{val| 0.000 -16.241 +6.406 +59.746 }}
 
{{Optimal ET sequence|legend=1| 7, 14d }}
 
[[Badness]] (Sintel): 2.68
 
=== 11-limit ===
Subgroup: 2.3.5.7.11
 
Comma list: 45/44, 54/49, 64/63
 
Mapping: {{mapping| 7 11 0 20 8 | 0 0 1 0 1 }}
 
Optimal tunings:
* WE: ~11/10 = 170.817{{c}}, ~5/4 = 393.252{{c}} (~33/32 = 51.619{{c}})
* CWE: ~11/10 = 171.429{{c}}, ~5/4 = 391.840{{c}} (~33/32 = 48.983{{c}})
 
{{Optimal ET sequence|legend=0| 7, 14de }}
 
Badness (Sintel): 2.02
 
=== 13-limit ===
Subgroup: 2.3.5.7.11.13
 
Comma list: 27/26, 45/44, 52/49, 64/63
 
Mapping: {{mapping| 7 11 0 20 8 26 | 0 0 1 0 1 0 }}
 
Optimal tunings:
* WE: ~11/10 = 170.795{{c}}, ~5/4 = 393.611{{c}} (~33/32 = 52.021{{c}})
* CWE: ~11/10 = 171.429{{c}}, ~5/4 = 392.725{{c}} (~33/32 = 49.868{{c}})
 
{{Optimal ET sequence|legend=0| 7, 14de }}
 
Badness (Sintel): 1.77


== Geryon ==
== Geryon ==
Line 251: Line 394:


[[Optimal tuning]]s:  
[[Optimal tuning]]s:  
* [[CTE]]: ~2 = 1200.000, ~5/4 = 354.664
* [[WE]]: ~2 = 1164.885{{c}}, ~5/4 = 374.162{{c}}
: [[error map]]: {{val| 0.000 +7.373 -31.649 +231.174 }}
: [[error map]]: {{val| -35.115 +11.253 -82.382 +125.830 }}
* [[POTE]]: ~2 = 1200.000, ~5/4 = 385.440
* [[CWE]]: ~2 = 1200.000{{c}}, ~5/4 = 375.277{{c}}
: error map: {{val| 0.000 +68.926 -0.873 +231.174 }}
: error map: {{val| 0.000 +48.600 -11.036 +231.174 }}


{{Optimal ET sequence|legend=1| 1b, 2b, 3d }}
{{Optimal ET sequence|legend=1| 1b, 2b, 3d }}


[[Badness]] (Smith): 0.051009
[[Badness]] (Sintel): 1.29


== Malacoda ==
== Malacoda ==
Line 272: Line 415:


[[Optimal tuning]]s:  
[[Optimal tuning]]s:  
* [[CTE]]: ~2 = 1200.000, ~7/4 = 938.796
* [[WE]]: ~2 = 1223.542{{c}}, ~7/4 = 941.838{{c}}
: [[error map]]: {{val| 0.000 -24.362 -125.110 -30.029 }}
: [[error map]]: {{val| +23.542 -18.278 -57.528 +20.096 }}
* [[POTE]]: ~2 = 1200.000, ~7/4 = 923.717
* [[CWE]]: ~2 = 1200.000{{c}}, ~7/4 = 927.096{{c}}
: error map: {{val| 0.000 -54.521 -110.031 -45.109 }}
: error map: {{val| 0.000 -47.763 -113.410 -41.730 }}


{{Optimal ET sequence|legend=1| 1, 3b, 4, 9c, 13bcc }}
{{Optimal ET sequence|legend=1| 1, 3b, 4, 9c, 13bcc }}


[[Badness]] (Smith): 0.037207
[[Badness]] (Sintel): 0.942


== Ugolino ==
== Ugolino ==
Line 291: Line 434:


[[Optimal tuning]]s:  
[[Optimal tuning]]s:  
* [[CTE]]: ~2 = 1200.000, ~5/3 = 926.868
* [[WE]]: ~2 = 1206.628{{c}}, ~7/4 = 926.730{{c}}
: [[error map]]: {{val| 0.000 -48.218 -5.708 +65.517 }}
: [[error map]]: {{val| +6.628 -48.494 -6.122 +58.198 }}
* [[POTE]]: ~2 = 1200.000, ~5/3 = 921.640
* [[CWE]]: ~2 = 1200.000{{c}}, ~7/4 = 923.776{{c}}
: error map: {{val| 0.000 -58.675 -21.394 +39.374 }}
: error map: {{val| 0.000 -54.403 -14.986 +50.054 }}


{{Optimal ET sequence|legend=1| 1cdd, 3bcdd, 4, 9d }}
{{Optimal ET sequence|legend=1| 1cdd, 3bcdd, 4, 9d }}


[[Badness]] (Smith): 0.043758
[[Badness]] (Sintel): 1.11


== Medusa ==
== Medusa ==
Line 310: Line 453:


[[Optimal tuning]]s:  
[[Optimal tuning]]s:  
* [[CTE]]: ~2 = 1200.000, ~3/2 = 684.722
* [[WE]]: ~2 = 1200.960{{c}}, ~3/2 = 686.181{{c}}
: [[error map]]: {{val| 0.000 -17.233 -40.480 +61.730 }}
: [[error map]]: {{val| +0.960 -14.814 -41.014 +62.655 }}
* [[POTE]]: ~2 = 1200.000, ~3/2 = 685.632
* [[CWE]]: ~2 = 1200.000{{c}}, ~3/2 = 685.511{{c}}
: error map: {{val| 0.000 -16.323 -43.209 +59.911 }}
: error map: {{val| 0.000 -16.443 -42.849 +60.150 }}


{{Optimal ET sequence|legend=1| 2, 5c, 7 }}
{{Optimal ET sequence|legend=1| 2, 5c, 7 }}


[[Badness]] (Smith): 0.042712
[[Badness]] (Sintel): 1.08


=== 11-limit ===
=== 11-limit ===
Line 327: Line 470:


Optimal tunings:  
Optimal tunings:  
* CTE: ~2 = 1200.000, ~3/2 = 683.589
* WE: ~2 = 1202.757{{c}}, ~3/2 = 687.384{{c}}
* POTE: ~2 = 1200.000, ~3/2 = 685.809
* CWE: ~2 = 1200.000{{c}}, ~3/2 = 685.462{{c}}


{{Optimal ET sequence|legend=0| 2, 5c, 7 }}
{{Optimal ET sequence|legend=0| 2, 5c, 7 }}


Badness (Smith): 0.026828
Badness (Sintel): 0.887


== Wallaby ==
== Wallaby ==
Line 343: Line 486:
{{Mapping|legend=1| 1 0 7 -2 | 0 1 -3 3 }}
{{Mapping|legend=1| 1 0 7 -2 | 0 1 -3 3 }}


[[Optimal tuning]]s:
[[Optimal tuning]]s:  
* [[CTE]]: ~2 = 1200.000, ~3/2 = 691.757
* [[WE]]: ~2 = 1216.024{{c}}, ~3/2 = 700.583{{c}}
: [[error map]]: {{val| 0.000 -8.515 -66.635 -88.505 }}
: [[error map]]: {{val| +16.024 +14.652 -23.967 -51.053 }}
* [[POTE]]: ~2 = 1200.000, ~3/2 = 691.351
* [[CWE]]: ~2 = 1200.000{{c}}, ~3/2 = 691.757{{c}}
: error map: {{val| 0.000 -10.604 -60.368 -94.772 }}
: error map: {{val| 0.000 -10.198 -61.585 -93.555 }}


{{Optimal ET sequence|legend=1| 2d, 5c, 7d, 19ccdd }}
{{Optimal ET sequence|legend=1| 2d, 5c, 7d, 19ccdd }}


[[Badness]] (Smith): 0.058468
[[Badness]] (Sintel): 1.48


== Plutus ==
== Plutus ==
{{Distinguish| Pluto }}
{{See also| Meantone family }}
{{See also| Meantone family }}


Line 363: Line 507:


[[Optimal tuning]]s:  
[[Optimal tuning]]s:  
* [[CTE]]: ~2 = 1200.000, ~3/2 = 685.837
* [[WE]]: ~2 = 1203.936{{c}}, ~3/2 = 685.135{{c}}
: [[error map]]: {{val| 0.000 -16.118 -42.965 +60.359 }}
: [[error map]]: {{val| +3.936 -12.884 -45.774 +56.849 }}
* [[POTE]]: ~2 = 1200.000, ~3/2 = 682.895
* [[CWE]]: ~2 = 1200.000{{c}}, ~3/2 = 683.935{{c}}
: error map: {{val| 0.000 -19.060 -54.734 +45.649 }}
: error map: {{val| 0.000 -18.020 -50.573 +50.850 }}


{{Optimal ET sequence|legend=1| 2cd, 5d, 7 }}
{{Optimal ET sequence|legend=1| 2cd, 5d, 7 }}


[[Badness]] (Smith): 0.045275
[[Badness]] (Sintel): 1.14


=== 11-limit ===
=== 11-limit ===
Line 380: Line 524:


Optimal tunings:  
Optimal tunings:  
* CTE: ~2 = 1200.000, ~3/2 = 687.743
* WE: ~2 = 1203.293{{c}}, ~3/2 = 687.114{{c}}
* POTE: ~2 = 1200.000, ~3/2 = 685.234
* CWE: ~2 = 1200.000{{c}}, ~3/2 = 686.078{{c}}


{{Optimal ET sequence|legend=0| 2cde, 5de, 7 }}
{{Optimal ET sequence|legend=0| 2cde, 5de, 7 }}


Badness (Smith): 0.032521
Badness (Sintel): 1.08


== Involution ==
== Involution ==
Involution was named by [[User:CompactStar|CompactStar]] in 2023.  
Involution tempers out the [[45/32|ptolemaic augmented fourth (45/32)]]. Its ploidacot is monocot. It was named by [[User:CompactStar|CompactStar]] in 2023.  


[[Subgroup]]: 2.3.5
[[Subgroup]]: 2.3.5
Line 399: Line 543:


[[Optimal tuning]]s:  
[[Optimal tuning]]s:  
* [[CTE]]: ~2 = 1200.000, ~3/2 = 509.892
* [[WE]]: ~2 = 1265.406{{c}}, ~3/2 = 552.346{{c}}
: [[error map]]: {{val| 0.000 -192.063 -206.097 }}
: [[error map]]: {{val| +65.405 -84.203 -94.789 }}
* [[CWE]]: ~2 = 1200.000, ~3/2 = 520.625
* [[CWE]]: ~2 = 1200.000{{c}}, ~3/2 = 520.626{{c}}
: error map: {{val| 0.000 -181.330 -227.565 }}
: error map: {{val| 0.000 -181.329 -227.565 }}


{{Optimal ET sequence|legend=1| 2c, 5bc, 7bbcc }}
{{Optimal ET sequence|legend=1| 2c, 5bc, 7bbcc }}


[[Badness]] (Smith): 0.133021
[[Badness]] (Sintel): 3.12


=== 7-limit ===
=== 7-limit ===
Line 416: Line 560:


Optimal tunings:  
Optimal tunings:  
* CTE: ~2 = 1200.000, ~3/2 = 509.892
* WE: ~2 = 1205.230{{c}}, ~3/2 = 517.557{{c}}
* CWE: ~2 = 1200.000, ~3/2 = 515.099
* CWE: ~2 = 1200.000{{c}}, ~3/2 = 515.099{{c}}


Optimal ET sequence: none
Optimal ET sequence: none


Badness (Smith): 0.118764
Badness (Sintel): 3.01


== Devolution ==
== Devolution ==
Line 435: Line 579:


[[Optimal tuning]]s:  
[[Optimal tuning]]s:  
* [[CTE]]: ~3 = 1901.955, ~5/3 = 701.863
* [[WE]]: ~3 = 1988.549{{c}}, ~5/3 = 719.679{{c}}
: [[error map]]: {{val| 0.000 -182.496 -266.779 }}
: [[error map]]: {{val| +86.594 -78.085 -111.407 }}
* [[CWE]]: ~3 = 1901.995, ~5/3 = 691.468
* [[CWE]]: ~3 = 1901.955{{c}}, ~5/3 = 691.468{{c}}
: error map: {{val| 0.000 -192.891 -256.384 }}
: error map: {{val| 0.000 -192.891 -256.384 }}


[[Optimal ET sequence]]: [[1edt|b1]], [[2edt|b2d]], [[3edt|b3]], [[8edt|b8cdd]]
[[Optimal ET sequence]]: [[1edt|b1]], [[2edt|b2d]], [[3edt|b3]], [[8edt|b8cdd]]


[[Badness]]:
[[Badness]] (Sintel): 0.751
* Smith: 0.00406
* Dirichlet: 0.751


== Codex ==
== Codex ==
{{See also| Bug family }}
{{See also| Bug family }}
 
Codex was named by [[User:Jerdle|Jerdle]] as an abbreviation of "co-decimal", as it resembles [[decimal]] in many ways, but exchanges the roles of 5's and 7's. While decimal equates [[8/7]] and [[7/6]], as well as [[6/5]] and [[5/4]], this equates [[10/9]] and [[6/5]], as well as [[7/6]] and [[9/7]]. It is an extension of [[bug]] and [[54/49|mujannabic]] in the same way decimal is of [[semaphore]] and [[dicot]]. Its ploidacot is diploid dicot.  
This temperament was named by [[User:Jerdle|Jerdle]] as an abbreviation of "co-decimal", as it resembles [[decimal]] in many ways, but exchanges the roles of 5's and 7's. While decimal equates [[8/7]] and [[7/6]], as well as [[6/5]] and [[5/4]], this equates [[10/9]] and [[6/5]], as well as [[7/6]] and [[9/7]]. It is an extension of [[bug]] in the same way decimal is of [[semaphore]].  


[[Subgroup]]: 2.3.5.7
[[Subgroup]]: 2.3.5.7


[[Comma list]]: [[27/25]], [[54/49]]
[[Comma list]]: [[27/25]], [[50/49]]


{{Mapping|legend=1| 2 0 0 1 | 0 2 3 3 }}
{{Mapping|legend=1| 2 0 0 1 | 0 2 3 3 }}


[[Optimal tuning]]s:  
[[Optimal tuning]]s:  
* [[CTE]]: ~7/5 = 600.000, ~5/3 = 935.289
* [[WE]]: ~7/5 = 598.589{{c}}, ~5/3 = 934.978{{c}}
: [[error map]]: {{val| 0.000 -31.377 +19.554 +37.041 }}
: [[error map]]: {{val| -2.821 -31.998 +18.621 +34.699 }}
* [[CWE]]: ~7/5 = 600.000, ~5/3 = 936.030
* [[CWE]]: ~7/5 = 600.000{{c}}, ~5/3 = 936.030{{c}}
: error map: {{val| 0.000 -29.895 +21.776 +39.264 }}
: error map: {{val| 0.000 -29.895 +21.776 +39.264 }}


{{Optimal ET sequence|legend=1| 4, 10cd, 14d }}
{{Optimal ET sequence|legend=1| 4, 10cd, 14d }}


[[Badness]] (Smith): 0.077065
[[Badness]] (Sintel): 1.95


== Oxygen ==
== Oxygen ==
{{See also| Porcupine family }}
{{See also| Porcupine family }}
Oxygen extends porcupine into the 7-limit by conflating 6/5 with 8/7. While this means it does not represent either of those intervals with any real accuracy, it is still of interest because its comma basis suggests potential utility to construct [[fokker block|Fokker blocks]].


[[Subgroup]]: 2.3.5.7
[[Subgroup]]: 2.3.5.7
Line 477: Line 619:


[[Optimal tuning]]s:  
[[Optimal tuning]]s:  
* [[CTE]]: ~2 = 1200.000, ~10/9 = 161.341
* [[WE]]: ~2 = 1213.695{{c}}, ~10/9 = 171.042{{c}}
: [[error map]]: {{val| 0.000 +14.023 +6.982 -91.507 }}
: error map: {{val| +13.695 +12.309 -0.438 -69.825 }}
* [[POTE]]: ~2 = 1200.000, ~10/9 = 169.112
* [[CWE]]: ~2 = 1200.000{{c}}, ~10/9 = 166.042{{c}}
: error map: {{val| 0.000 -9.291 -31.873 -107.050 }}
: error map: {{val| 0.000 -0.083 -16.526 -100.911 }}
 
{{Optimal ET sequence|legend=1| 1c, …, 6bcd, 7d }}*
 
<nowiki/>*[[Optimal patent val]]: [[8edo|8]]
 
[[Badness]] (Sintel): 1.52
 
== Bixby ==
{{Main| Bixby }}
 
[[Subgroup]]: 2.3.5
 
[[Comma list]]: [[4/3]]
 
{{Mapping|legend=1| 1 2 0 | 0 0 1 }}
 
[[Optimal tuning]]s:
* [[WE]]: ~2 = 1020.058{{c}}, ~5/4 = 674.394{{c}}
: [[error map]]: {{val| -179.942 +138.161 -71.803 }}
* [[CWE]]: ~2 = 1200.000{{c}}, ~5/4 = 629.521{{c}}
: error map: {{val| 0.000 +498.045 +243.208 }}
 
{{Optimal ET sequence|legend=1| 1c, 2b, 3bbcc }}
 
[[Badness]] (Sintel): 0.424
 
== Archon ==
{{Main| Archon }}
 
[[Subgroup]]: 2.3.5
 
[[Comma list]]: [[5/4]]
 
{{Mapping|legend=1| 1 0 2 | 0 1 0 }}
 
[[Optimal tuning]]s:
* [[WE]]: ~2 = 1268.274{{c}}, ~3/2 = 612.921{{c}}
: [[error map]]: {{val| +68.274 -20.760 -249.765 }}
* [[CWE]]: ~2 = 1200.000{{c}}, ~3/2 = 614.055{{c}}
: error map: {{val| 0.000 -87.900 -386.314 }}
 
{{Optimal ET sequence|legend=1| 2c }}
 
[[Badness]] (Sintel): 0.474
 
== Seesaw ==
{{Main| Seesaw }}
Seesaw tempers out the [[6/5|classic minor third (6/5)]], equating the [[5/1|fifth]] and [[6/1|sixth harmonic]]s. It was named by [[User:Xenllium|Xenllium]] in 2026.
 
[[Subgroup]]: 2.3.5
 
[[Comma list]]: 6/5
 
{{Mapping|legend=1| 1 0 1 | 0 1 1 }}
 
[[Optimal tuning]]s:
* [[WE]]: ~2 = 1155.569{{c}}, ~3/2 = 643.349{{c}}
: [[error map]]: {{val| -44.431 -103.037 +168.173 }}
* [[CWE]]: ~2 = 1200.000{{c}}, ~3/2 = 627.511{{c}}
: error map: {{val| 0.000 -74.444 +241.197 }}
 
{{Optimal ET sequence|legend=1| 2 }}
 
[[Badness]] (Sintel): 0.367
 
=== 2.3.5.11 subgroup ===
This temperament is extended to the 2.3.5.11 subgroup naturally, tempering out both [[11/10]] and [[12/11]], undecimal neutral seconds.
 
Subgroup: 2.3.5.11
 
Comma list: 6/5, 11/10
 
Mapping: {{mapping| 1 0 1 2 | 0 1 1 1 }}
 
Optimal tunings:
* WE: ~2 = 1156.418{{c}}, ~3/2 = 643.202{{c}}
* CWE: ~2 = 1200.000{{c}}, ~3/2 = 627.023{{c}}
 
{{Optimal ET sequence|legend=0| 2 }}
 
Badness (Sintel): 0.499
 
=== Heavy windmill ===
Heavy windmill tempers out [[9/7]] and [[15/14]] in the 7-limit.
 
Subgroup: 2.3.5.7
 
Comma list: 6/5, 9/7
 
Mapping: {{mapping| 1 0 1 0 | 0 1 1 2 }}
 
Optimal tunings:
* WE: ~2 = 1161.600{{c}}, ~3/2 = 571.169{{c}}
* CWE: ~2 = 1200.000{{c}}, ~3/2 = 559.563{{c}}
 
{{Optimal ET sequence|legend=0| 2 }}
 
Badness (Sintel): 0.676
 
==== 11-limit ====
Subgroup: 2.3.5.7.11
 
Comma list: 6/5, 9/7, 11/10
 
Mapping: {{mapping| 1 0 1 0 2 | 0 1 1 2 1 }}
 
Optimal tunings:
* WE: ~2 = 1166.584{{c}}, ~3/2 = 568.073{{c}}
* CWE: ~2 = 1200.000{{c}}, ~3/2 = 558.941{{c}}
 
{{Optimal ET sequence|legend=0| 2 }}
 
Badness (Sintel): 0.774
 
=== Light windmill ===
Light windmill tempers out [[8/7]] and [[21/20]] in the 7-limit.
 
Subgroup: 2.3.5.7
 
Comma list: 6/5, 8/7
 
Mapping: {{mapping| 1 0 1 3 | 0 1 1 0 }}
 
Optimal tunings:
* WE: ~2 = 1134.018{{c}}, ~3/2 = 670.285{{c}}
* CWE: ~2 = 1200.000{{c}}, ~3/2 = 667.893{{c}}
 
{{Optimal ET sequence|legend=0| 2 }}
 
Badness (Sintel): 0.629
 
==== 11-limit ====
Subgroup: 2.3.5.7.11
 
Comma list: 6/5, 8/7, 11/10
 
Mapping: {{mapping| 1 0 1 3 2 | 0 1 1 0 1 }}
 
Optimal tunings:
* WE: ~2 = 1136.109{{c}}, ~3/2 = 672.403{{c}}
* CWE: ~2 = 1200.000{{c}}, ~3/2 = 668.374{{c}}


{{Optimal ET sequence|legend=1| 1c, …, 6bcd, 7d }}
{{Optimal ET sequence|legend=0| 2 }}


[[Badness]] (Smith): 0.059866
Badness (Sintel): 0.681


[[Category:Temperament collections]]
[[Category:Temperament collections]]
Retrieved from "https://en.xen.wiki/w/Very_low_accuracy_temperaments"