Vulture family: Difference between revisions

Switch to Sintel's badness, WE & CWE tunings, per community consensus
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{{interwiki
{{Interwiki
| en = Vulture family
| de = Vulture
| de = Vulture
| en = Vulture_family
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{{Technical data page}}
{{Technical data page}}
The '''vulture family''' of [[temperament]]s [[tempering out|tempers out]] the [[vulture comma]] ({{monzo|legend=1| 24 -21 4 }}, [[ratio]]: 10 485 760 000 / 10 460 353 203), a small [[5-limit]] comma of 4.2 [[cent]]s that is the amount by which a stack of four [[syntonic comma]]s falls short of the [[256/243]] Pythagorean limma. As their defining feature, vulture temperaments split the interval [[3/1]] into four segments (identified in the 5-limit as [[320/243]]).
The '''vulture family''' of [[temperament]]s [[tempering out|tempers out]] the [[vulture comma]] ({{monzo|legend=1| 24 -21 4 }}, [[ratio]]: 10 485 760 000 / 10 460 353 203), a small [[5-limit]] comma of 4.2 [[cent]]s that is the amount by which a stack of four [[syntonic comma]]s falls short of the [[256/243]] Pythagorean limma. As their defining feature, vulture temperaments split the interval [[3/1]] into four segments (identified in the 5-limit as [[320/243]]).
Temperaments discussed elsewhere include [[Landscape microtemperaments #Terture|terture]] and [[Buzzardsmic clan #Buzzard|buzzard]]. Considered below are septimal vulture, condor, eagle, and turkey.


== Vulture ==
== Vulture ==
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{{Mapping|legend=1| 1 0 -6 | 0 4 21 }}
{{Mapping|legend=1| 1 0 -6 | 0 4 21 }}
: mapping generators: ~2, ~320/243
: mapping generators: ~2, ~320/243


Line 26: Line 23:
* [[CWE]]: ~2 = 1200.0000{{c}}, ~320/243 = 475.5396{{c}}
* [[CWE]]: ~2 = 1200.0000{{c}}, ~320/243 = 475.5396{{c}}
: error map: {{val| 0.000 +0.203 +0.018 }}
: error map: {{val| 0.000 +0.203 +0.018 }}
<!-- * [[CTE]]: ~2 = 1200.0000{{c}}, ~320/243 = 475.5351{{c}}
: [[error map]]: {{val| 0.0000 +0.1855 -0.0758 }}
* [[POTE]]: ~2 = 1200.0000{{c}}, ~320/243 = 475.5426{{c}}
: error map: {{val| 0.0000 +0.2154 +0.0811 }} -->


{{Optimal ET sequence|legend=1| 53, 164, 217, 270, 323, 2531, 2854b, 3177b, …, 4469b }}
{{Optimal ET sequence|legend=1| 53, 164, 217, 270, 323, 2531, 2854b, 3177b, …, 4469b }}


[[Badness]] (Sintel): 0.972
[[Badness]] (Sintel): 0.972
=== Overview to extensions ===
Temperaments discussed elsewhere include [[Buzzardsmic clan #Buzzard|buzzard]]. Considered below are septimal vulture, terture, condor, eagle, and turkey.


== Septimal vulture ==
== Septimal vulture ==
Septimal vulture can be described as the {{nowrap| 53 & 270 }} microtemperament, tempering out the [[ragisma]], 4375/4374 and the [[garischisma]], 33554432/33480783 ({{monzo| 25 -14 0 -1 }}) aside from the vulture comma. [[270edo]] is a good tuning for this temperament, with generator 107\270. The harmonic 7 is found at -14 fifths or {{nowrap| (-14) × 4 {{=}} -56 }} generator steps, so that the smallest [[mos scale]] that includes it is the 58-note one, though for larger scope of harmony, you could try the 111- or 164-note one. For a much simpler mapping of 7 at the cost of higher error, you could try [[Buzzardsmic clan #Septimal buzzard|buzzard]].  
Septimal vulture can be described as the {{nowrap| 53 & 270 }} microtemperament, tempering out the [[ragisma]], 4375/4374 and the [[garischisma]], 33554432/33480783 ({{monzo| 25 -14 0 -1 }}) aside from the vulture comma. [[270edo]] is an excellent tuning for this temperament, with generator 107\270. Other compatible tunings include [[217edo]] and [[323edo]]. The harmonic 7 is found at -14 fifths or {{nowrap| (-14) × 4 {{=}} -56 }} generator steps, so the smallest [[mos scale]] that includes it is the 58-note one, though for larger scope of harmony, you could try the 111- or 164-note one. For a much simpler mapping of 7 at the cost of higher error, you could try [[Buzzardsmic clan #Septimal buzzard|buzzard]].  


It can be extended to the 11-limit by identifying a stack of four [[5/4]]'s as [[11/9]], tempering out [[5632/5625]], and to the 13-limit by identifying the hemitwelfth as [[26/15]], tempering out [[676/675]]. Furthermore, the generator of vulture is very close to [[25/19]]; a stack of three generator steps octave-reduced thus represents its fifth complement, [[57/50]]. This corresponds to tempering out [[1216/1215]] with the effect of equating the schisma with [[513/512]] and [[361/360]] in addition to many 11- and 13-limit commas. 270edo remains an excellent tuning in all cases.  
It can be extended to the 11-limit by identifying a stack of four [[5/4]]'s as [[11/9]], tempering out [[5632/5625]], and to the 13-limit by identifying the hemitwelfth as [[26/15]], tempering out [[676/675]]. Furthermore, the generator of vulture is very close to [[25/19]]; a stack of three generator steps octave-reduced thus represents its fifth complement, [[57/50]]. This corresponds to tempering out [[1216/1215]] with the effect of equating the schisma with [[513/512]] and [[361/360]] in addition to many 11- and 13-limit commas. 270edo remains an excellent tuning in all cases.  
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* [[CWE]]: ~2 = 1200.0000{{c}}, ~320/243 = 475.5515{{c}}
* [[CWE]]: ~2 = 1200.0000{{c}}, ~320/243 = 475.5515{{c}}
: error map: {{val| 0.000 +0.251 +0.267 +0.292 }}
: error map: {{val| 0.000 +0.251 +0.267 +0.292 }}
<!-- * [[CTE]]: ~2 = 1200.0000{{c}}, ~320/243 = 475.5528{{c}}
: [[error map]]: {{val| 0.0000 +0.2561 +0.2945 +0.2188 }}
* [[POTE]]: ~2 = 1200.0000{{c}}, ~320/243 = 475.5511{{c}}
: error map: {{val| 0.0000 +0.2495 +0.2601 +0.3106 }} -->


{{Optimal ET sequence|legend=1| 53, 164, 217, 270, 593, 863, 1133, 1996d }}
{{Optimal ET sequence|legend=1| 53, 164, 217, 270, 593, 863, 1133, 1996d }}
Line 70: Line 62:
* WE: ~2 = 1199.9392{{c}}, ~320/243 = 475.5326{{c}}
* WE: ~2 = 1199.9392{{c}}, ~320/243 = 475.5326{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~320/243 = 475.5655{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~320/243 = 475.5655{{c}}
<!-- * CTE: ~2 = 1200.0000{{c}}, ~320/243 = 475.5558{{c}}
* POTE: ~2 = 1200.0000{{c}}, ~320/243 = 475.5567{{c}} -->


{{Optimal ET sequence|legend=0| 53, 217, 270, 2107c, 2377bc }}
{{Optimal ET sequence|legend=0| 53, 217, 270, 2107c, 2377bc }}
Line 85: Line 75:


Optimal tunings:  
Optimal tunings:  
* WE: ~2 = 1199.9695{{c}}, ~320/243 = 475.5451{{c}}
* WE: ~2 = 1199.9695{{c}}, ~154/117 = 475.5451{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~320/243 = 475.5571{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~154/117 = 475.5571{{c}}
<!-- * CTE: ~2 = 1200.0000{{c}}, ~320/243 = 475.5566{{c}}
* POTE: ~2 = 1200.0000{{c}}, ~320/243 = 475.5572{{c}} -->


{{Optimal ET sequence|legend=0| 53, 217, 270 }}
{{Optimal ET sequence|legend=0| 53, 217, 270 }}
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* WE: ~2 = 1199.9636{{c}}, ~25/19 = 475.5426{{c}}
* WE: ~2 = 1199.9636{{c}}, ~25/19 = 475.5426{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~25/19 = 475.5569{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~25/19 = 475.5569{{c}}
<!-- * CTE: ~2 = 1200.0000{{c}}, ~25/19 = 475.5561{{c}} -->


{{Optimal ET sequence|legend=0| 53, 217, 270 }}
{{Optimal ET sequence|legend=0| 53, 217, 270 }}
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* WE: ~99/70 = 599.9594{{c}}, ~320/243 = 475.5174{{c}}
* WE: ~99/70 = 599.9594{{c}}, ~320/243 = 475.5174{{c}}
* CWE: ~99/70 = 600.0000{{c}}, ~320/243 = 475.5501{{c}}
* CWE: ~99/70 = 600.0000{{c}}, ~320/243 = 475.5501{{c}}
<!-- * CTE: ~99/70 = 600.0000{{c}}, ~320/243 = 475.5523{{c}}
* POTE: ~99/70 = 600.0000{{c}}, ~320/243 = 475.5496{{c}} -->


{{Optimal ET sequence|legend=0| 106, 164, 270, 916, 1186, 1456 }}
{{Optimal ET sequence|legend=0| 106, 164, 270, 916, 1186, 1456 }}
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* WE: ~99/70 = 599.9859{{c}}, ~320/243 = 475.5423{{c}}
* WE: ~99/70 = 599.9859{{c}}, ~320/243 = 475.5423{{c}}
* CWE: ~99/70 = 600.0000{{c}}, ~320/243 = 475.5536{{c}}
* CWE: ~99/70 = 600.0000{{c}}, ~320/243 = 475.5536{{c}}
<!-- * CTE: ~99/70 = 600.0000{{c}}, ~320/243 = 475.5540{{c}}
* POTE: ~99/70 = 600.0000{{c}}, ~320/243 = 475.553{{c}} -->


{{Optimal ET sequence|legend=0| 106, 164, 270 }}
{{Optimal ET sequence|legend=0| 106, 164, 270 }}


Badness (Sintel): 1.47
Badness (Sintel): 1.47
== Terture ==
Named by [[Xenllium]] in 2021, terture tempers out 250047/250000, the [[landscape comma]], and may be described as the {{nowrap| 111 & 159 }} temperament, with a [[ploidacot]] signature of triploid gamma-tetracot.
[[Subgroup]]: 2.3.5.7
[[Comma list]]: 250047/250000, 359661568/358722675
{{Mapping|legend=1| 3 0 -18 -32 | 0 4 21 34 }}
: mapping generators: ~63/50, ~320/243
[[Optimal tuning]]s:
* [[WE]]: ~63/50 = 399.9723{{c}}, ~320/243 = 475.5221{{c}} (~392/375 = 75.5499{{c}})
: [[error map]]: {{val| -0.083 +0.134 +0.151 -0.185 }}
* [[CWE]]: ~63/50 = 400.0000{{c}}, ~320/243 = 475.5519{{c}} (~392/375 = 75.5519{{c}})
: error map: {{val| 0.000 +0.253 +0.276 -0.061 }}
{{Optimal ET sequence|legend=1| 111, 159, 270 }}
[[Badness]] (Sintel): 2.21
=== 11-limit ===
Subgroup: 2.3.5.7.11
Comma list: 3025/3024, 19712/19683, 102487/102400
Mapping: {{mapping| 3 0 -18 -32 8 | 0 4 21 34 2 }}
Optimal tunings:
* WE: ~63/50 = 399.9902{{c}}, ~320/243 = 475.5383{{c}} (~392/375 = 75.5481{{c}})
* CWE: ~63/50 = 400.0000{{c}}, ~320/243 = 475.5490{{c}} (~392/375 = 75.5490{{c}})
{{Optimal ET sequence|legend=0| 111, 159, 270, 1239, 1509, 1779, 2049, 2319 }}
Badness (Sintel): 0.969
=== 13-limit ===
Subgroup: 2.3.5.7.11.13
Comma list: 676/675, 1001/1000, 3025/3024, 10985/10976
Mapping: {{mapping| 3 0 -18 -32 8 -21 | 0 4 21 34 2 27 }}
Optimal tunings:
* WE: ~63/50 = 399.9958{{c}}, ~154/117 = 475.5485{{c}} (~117/112 = 75.5527{{c}})
* CWE: ~63/50 = 400.0000{{c}}, ~154/117 = 475.5531{{c}} (~117/112 = 75.5531{{c}})
{{Optimal ET sequence|legend=0| 111, 159, 270 }}
Badness (Sintel): 0.771
=== 17-limit ===
Subgroup: 2.3.5.7.11.13.17
Comma list: 676/675, 715/714, 936/935, 1001/1000, 4928/4913
Mapping: {{mapping| 3 0 -18 -32 8 -21 -2 | 0 4 21 34 2 27 12 }}
Optimal tunings:
* WE: ~34/27 = 399.9664{{c}}, ~112/85 = 475.5198{{c}} (~117/112 = 75.5534{{c}})
* CWE: ~34/27 = 400.0000{{c}}, ~112/85 = 475.5568{{c}} (~117/112 = 75.5568{{c}})
{{Optimal ET sequence|legend=0| 111, 159, 270 }}
Badness (Sintel): 0.953
=== 19-limit ===
Subgroup: 2.3.5.7.11.13.17.19
Comma list: 676/675, 715/714, 936/935, 1001/1000, 1216/1215, 1617/1615
Mapping: {{mapping| 3 0 -18 -32 8 -21 -2 -36 | 0 4 21 34 2 27 12 41 }}
Optimal tunings:
* WE: ~34/27 = 399.9665{{c}}, ~112/85 = 475.5198{{c}} (~95/91 = 75.5533{{c}})
* CWE: ~34/27 = 400.0000{{c}}, ~112/85 = 475.5568{{c}} (~95/91 = 75.5568{{c}})
{{Optimal ET sequence|legend=0| 111, 159, 270 }}
Badness (Sintel): 0.846
=== 23-limit ===
Subgroup: 2.3.5.7.11.13.17.19.23
Comma list: 460/459, 529/528, 676/675, 715/714, 936/935, 1001/1000, 1216/1215
Mapping: {{mapping| 3 0 -18 -32 8 -21 -2 -36 10 | 0 4 21 34 2 27 12 41 3 }}
Optimal tunings:
* WE: ~34/27 = 400.0026{{c}}, ~112/85 = 475.5510{{c}} (~24/23 = 75.5485{{c}})
* CWE: ~34/27 = 400.0000{{c}}, ~112/85 = 475.5482{{c}} (~24/23 = 75.5482{{c}})
{{Optimal ET sequence|legend=0| 111, 159, 270 }}
Badness (Sintel): 1.07


== Condor ==
== Condor ==
Condor tempers out [[10976/10935]] and may be described as the {{nowrap| 58 & 159 }} temperament. The generator represents the [[112/81|septimal diminished fifth (112/81)]], and three minus an octave make vulture's generator of ~320/243. The ploidacot for this temperament is epsilon-dodecacot. [[217edo]] is an excellent tuning for this temperament.
[[Subgroup]]: 2.3.5.7
[[Subgroup]]: 2.3.5.7


Line 158: Line 238:
* [[CWE]]: ~2 = 1200.0000{{c}}, ~112/81 = 558.5212{{c}}
* [[CWE]]: ~2 = 1200.0000{{c}}, ~112/81 = 558.5212{{c}}
: error map: {{val| 0.000 +0.300 +0.523 -1.287 }}
: error map: {{val| 0.000 +0.300 +0.523 -1.287 }}
<!-- * [[POTE]]: ~2 = 1200.0000{{c}}, ~112/81 = 558.5209{{c}} -->


{{Optimal ET sequence|legend=1| 58, 159, 217 }}
{{Optimal ET sequence|legend=1| 58, 159, 217 }}
Line 174: Line 253:
* WE: ~2 = 1199.9730{{c}}, ~112/81 = 558.5052{{c}}
* WE: ~2 = 1199.9730{{c}}, ~112/81 = 558.5052{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~112/81 = 558.5173{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~112/81 = 558.5173{{c}}
<!-- * POTE: ~2 = 1200.0000{{c}}, ~112/81 = 558.5178{{c}} -->


{{Optimal ET sequence|legend=0| 58, 101cd, 159, 217, 376d }}
{{Optimal ET sequence|legend=0| 58, 101cd, 159, 217, 376d }}
Line 190: Line 268:
* WE: ~2 = 1199.9649{{c}}, ~112/81 = 558.5040{{c}}
* WE: ~2 = 1199.9649{{c}}, ~112/81 = 558.5040{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~112/81 = 558.5197{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~112/81 = 558.5197{{c}}
<!-- * POTE: ~2 = 1200.0000{{c}}, ~81/56 = 641.4797{{c}} -->


{{Optimal ET sequence|legend=0| 58, 159, 217 }}
{{Optimal ET sequence|legend=0| 58, 159, 217 }}
Line 206: Line 283:
* WE: ~2 = 1199.9594{{c}}, ~112/81 = 558.5017{{c}}
* WE: ~2 = 1199.9594{{c}}, ~112/81 = 558.5017{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~112/81 = 558.5202{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~112/81 = 558.5202{{c}}
<!-- * POTE: ~2 = 1200.0000{{c}}, ~112/81 = 558.5206{{c}} -->


{{Optimal ET sequence|legend=0| 58, 159, 217 }}
{{Optimal ET sequence|legend=0| 58, 159, 217 }}
Line 213: Line 289:


== Eagle ==
== Eagle ==
Eagle tempers out [[2401/2400]] and may be described as the {{nowrap| 58 & 270 }} temperament. It has a semi-octave period and a generator of ~28/27, four of which make a hemifourth which may be identified with 15/13, and two of those make a perfect fourth; its ploidacot thus is diploid wau-octacot. Compatible tunings include [[212edo]], [[270edo]], and [[328edo]].
[[Subgroup]]: 2.3.5.7
[[Subgroup]]: 2.3.5.7


Line 225: Line 303:
* [[CWE]]: ~177147/125440 = 600.0000{{c}}, ~28/27 = 62.2295{{c}}
* [[CWE]]: ~177147/125440 = 600.0000{{c}}, ~28/27 = 62.2295{{c}}
: error map: {{val| 0.000 +0.209 +0.046 -0.105 }}
: error map: {{val| 0.000 +0.209 +0.046 -0.105 }}
<!-- * [[POTE]]: ~177147/125440 = 600.000{{c}}, ~28/27 = 62.229{{c}} -->


{{Optimal ET sequence|legend=1| 58, 154c, 212, 270, 752, 1022, 1292, 2854b }}
{{Optimal ET sequence|legend=1| 58, 154c, 212, 270, 752, 1022, 1292, 2854b }}
Line 241: Line 318:
* WE: ~99/70 = 599.9796{{c}} ~28/27 = 62.2218{{c}}
* WE: ~99/70 = 599.9796{{c}} ~28/27 = 62.2218{{c}}
* CWE: ~99/70 = 600.0000{{c}}, ~28/27 = 62.2251{{c}}
* CWE: ~99/70 = 600.0000{{c}}, ~28/27 = 62.2251{{c}}
<!-- * POTE: ~99/70 = 600.000{{c}}, ~28/27 = 62.224{{c}} -->


{{Optimal ET sequence|legend=0| 58, 154ce, 212, 270 }}
{{Optimal ET sequence|legend=0| 58, 154ce, 212, 270 }}
Line 257: Line 333:
* WE: ~99/70 = 599.9763{{c}} ~28/27 = 62.2174{{c}}
* WE: ~99/70 = 599.9763{{c}} ~28/27 = 62.2174{{c}}
* CWE: ~99/70 = 600.0000{{c}}, ~28/27 = 62.2211{{c}}
* CWE: ~99/70 = 600.0000{{c}}, ~28/27 = 62.2211{{c}}
<!-- * POTE: ~99/70 = 600.000{{c}}, ~28/27 = 62.220{{c}} -->


{{Optimal ET sequence|legend=0| 58, 154cef, 212, 270 }}
{{Optimal ET sequence|legend=0| 58, 154cef, 212, 270 }}
Line 264: Line 339:


== Turkey ==
== Turkey ==
Named by [[Xenllium]] in 2021, turkey may be described as the {{nowrap| 212 & 217 }} temperament. It is generated by a fifth sharp of just, close to 3\5 but on the flat side thereof, which can be interpreted as [[50/33]] in the 11-limit. Sixteen generators minus nine octaves make a perfect fifth; its ploidacot is thus theta-16-cot. [[429edo]] may be recommended as a tuning.
[[Subgroup]]: 2.3.5.7
[[Subgroup]]: 2.3.5.7


Line 276: Line 353:
* [[CWE]]: ~2 = 1200.0000{{c}}, ~3592/1715 = 718.8806{{c}}
* [[CWE]]: ~2 = 1200.0000{{c}}, ~3592/1715 = 718.8806{{c}}
: error map: {{val| 0.000 +0.134 -0.345 -0.990 }}
: error map: {{val| 0.000 +0.134 -0.345 -0.990 }}
<!-- * [[POTE]]: ~2 = 1200.000{{c}}, ~1715/1296 = 481.120{{c}} -->


{{Optimal ET sequence|legend=1| 212, 429, 1070d }}
{{Optimal ET sequence|legend=1| 212, 429, 1070d }}
Line 292: Line 368:
* WE: ~2 = 1200.1131{{c}} ~50/33 = 718.9478{{c}}
* WE: ~2 = 1200.1131{{c}} ~50/33 = 718.9478{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~50/33 = 718.8808{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~50/33 = 718.8808{{c}}
<!-- * POTE: ~2 = 1200.000{{c}}, ~50/33 = 728.880{{c}} -->


{{Optimal ET sequence|legend=0| 212, 429 }}
{{Optimal ET sequence|legend=0| 212, 429 }}
Line 308: Line 383:
* WE: ~2 = 1200.1324{{c}} ~50/33 = 718.9608{{c}}
* WE: ~2 = 1200.1324{{c}} ~50/33 = 718.9608{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~50/33 = 718.8825{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~50/33 = 718.8825{{c}}
<!-- * POTE: ~2 = 1200.000{{c}}, ~50/33 = 718.882{{c}} -->


{{Optimal ET sequence|legend=0| 212, 217, 429 }}
{{Optimal ET sequence|legend=0| 212, 217, 429 }}
Line 315: Line 389:


[[Category:Temperament families]]
[[Category:Temperament families]]
[[Category:Pages with mostly numerical content]]
[[Category:Vulture family| ]] <!-- main article  
[[Category:Vulture family| ]] <!-- main article  
[[Category:Rank 2]]
[[Category:Rank 2]]