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The '''unicorn family''' tempers out the [[unicorn comma]], 1594323/1562500 = {{monzo| -2 13 -8 }}.  
{{Technical data page}}
The '''unicorn family''' tempers out the [[unicorn comma]], 1594323/1562500 = {{monzo| -2 13 -8 }}. The canonical extension to the 7-limit is by interpreting the generator as a slightly flattened [[~]][[28/27]] so that a flat [[~]][[6/5]] is found at 5 generators, corresponding to tempering [[126/125]], the [[octaphore]] and the [[hemimage comma]].


== Unicorn ==
== Unicorn ==
By noticing that the generator is very close to [[28/27]] we find the extension to the 7-limit by tempering the [[octaphore]] (which finds [[~]][[9/7]] at 7 gens and [[~]][[4/3]] at 8 gens, hence its name) and [[126/125]] (finding [[~]][[6/5]] at 5 gens). From this we can observe that the most natural extension is by equating adjacent [[superparticular interval]]s, by tempering the [[square-particular]]s between them, leading to its [[S-expression]]-based comma list of {[[676/675|S26]], [[729/728|S27]], [[784/783|S28]], [[841/840|S29]]}, to which experimentation shows we can find a reasonable mapping for prime 43 at -11 gens while all other primes require either quite complex mappings (being significantly positive rather than negative) or require high error or both.
[[Subgroup]]: 2.3.5
[[Subgroup]]: 2.3.5


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{{Mapping|legend=1| 1 2 3 | 0 -8 -13 }}
{{Mapping|legend=1| 1 2 3 | 0 -8 -13 }}


[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~250/243 = 62.458
[[Optimal tuning]]s:
* [[CTE]]: 2 = 1\1, ~250/243 =  62.441
* [[POTE]]: 2 = 1\1, ~250/243 = 62.458


{{Optimal ET sequence|legend=1| 19, 58, 77, 96, 173, 269 }}
{{Optimal ET sequence|legend=1| 19, 58, 77, 96, 173, 269 }}


[[Badness]]: 0.150487
[[Badness]]:
* Smith: 0.150487
* Dirichlet: 3.530


== Septimal unicorn ==
== Septimal unicorn ==
{{See also| Octaphore }}
[[Subgroup]]: 2.3.5.7
[[Subgroup]]: 2.3.5.7


[[Comma list]]: 126/125, 10976/10935
[[Comma list]]: [[126/125]], [[10976/10935]]


{{Mapping|legend=1| 1 2 3 4 | 0 -8 -13 -23 }}
{{Mapping|legend=1| 1 2 3 4 | 0 -8 -13 -23 }}


{{Multival|legend=1| 8 13 23 2 14 17 }}
[[Optimal tuning]]s:
* [[CTE]]: 2 = 1\1, ~28/27 = 62.324
* [[POTE]]: 2 = 1\1, ~28/27 = 62.278
 
{{Optimal ET sequence|legend=1| 19, 39d, 58, 77, 135c, 212c }}
 
Badness:
* Smith: 0.040913
* Dirichlet: 1.035


[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~28/27 = 62.278
=== 2.3.5.7.13 subgroup ===
[[Subgroup]]: 2.3.5.7.13


{{Optimal ET sequence|legend=1| 19, 39d, 58, 77, 135c }}
[[Comma list]]: [[126/125]], [[351/350]], [[676/675]]


[[Badness]]: 0.040913
{{Mapping|legend=1| 1 2 3 4 5 | 0 -8 -13 -23 -25 }}
 
[[Optimal tuning]] ([[CTE]]): 2 = 1\1, ~28/27 = 62.339
 
{{Optimal ET sequence|legend=1| 19, 39df, 58, 77, 212cf }}
 
Badness (Sintel): 0.590
 
==== 2.3.5.7.13.29 subgroup ====
[[Subgroup]]: 2.3.5.7.13.29
 
[[Comma list]]: [[126/125]], [[729/728]], [[784/783]], [[841/840]]
 
{{Mapping|legend=1| 1 2 3 4 5 6 | 0 -8 -13 -23 -25 -22 }}
 
[[Optimal tuning]] ([[CTE]]): 2 = 1\1, ~28/27 = 62.334
 
{{Optimal ET sequence|legend=1| 19, 39dfj, 58, 77, 212cfn }}
 
Badness (Sintel): 0.487
 
==== 2.3.5.7.13.29.43 subgroup ====
A notable tuning of unicorn not appearing in the [[optimal ET sequence]] here is [[96edo]] using the 96d val (with a 963[[cent|¢]] [[~]][[7/4]] similar to that of [[meanpop]]), an alternative to [[77edo]] that sacrifices the accuracy of prime 7 in favour of a more accurate [[5/4]] and [[43/32]].
 
[[Subgroup]]: 2.3.5.7.13.29.43
 
[[Comma list]]: [[126/125]], [[729/728]], [[784/783]], [[841/840]], 216/215
 
{{Mapping|legend=1| 1 2 3 4 5 6 6 | 0 -8 -13 -23 -25 -22 -11 }}
 
[[Optimal tuning]] ([[CTE]]): 2 = 1\1, ~28/27 = 62.339
 
{{Optimal ET sequence|legend=1| 19, 39dfj, 58, 77, 135c, 212cfn }}
 
Badness (Sintel): 0.514


=== Alicorn ===
=== Alicorn ===
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{{Mapping|legend=1| 1 2 3 3 | 0 -8 -13 -4 }}
{{Mapping|legend=1| 1 2 3 3 | 0 -8 -13 -4 }}
{{Multival|legend=1| 8 13 4 2 -16 -27 }}


[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~21/20 = 62.920
[[Optimal tuning]] ([[POTE]]): ~2 = 1\1, ~21/20 = 62.920
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[[Category:Temperament families]]
[[Category:Temperament families]]
[[Category:Pages with mostly numerical content]]
[[Category:Unicorn family| ]] <!-- main article -->
[[Category:Unicorn family| ]] <!-- main article -->
[[Category:Unicorn| ]] <!-- key article -->
[[Category:Unicorn| ]] <!-- key article -->
[[Category:Rank 2]]
[[Category:Rank 2]]
Retrieved from "https://en.xen.wiki/w/Unicorn_family"