Alphatricot family: Difference between revisions
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The '''alphatricot family''' of [[regular temperament|temperaments]] [[tempering out|tempers out]] the [[alphatricot comma]] ({{monzo|legend=1| 39 -29 3 }}, [[ratio]]: 68 719 476 736 000 / 68 630 377 364 883). | The '''alphatricot family''' of [[regular temperament|temperaments]] [[tempering out|tempers out]] the [[alphatricot comma]] ({{monzo|legend=1| 39 -29 3 }}, [[ratio]]: 68 719 476 736 000 / 68 630 377 364 883). | ||
Strong 7-limit extensions of this temperament include alphatrimot (53 & 70), alphatrident (53 & 229) and alphatrillium (53 & 441). Tempering out [[5120/5103|hemifamity comma]] (5120/5103) leads to alphatrimot, [[6144/6125|porwell comma]] (6144/6125) leads to alphatrident, and [[4375/4374|ragisma]] (4375/4374) leads to alphatrillium. | Strong 7-limit extensions of this temperament include alphatrimot ({{nowrap| 53 & 70 }}), alphatrident ({{nowrap| 53 & 229 }}) and alphatrillium ({{nowrap| 53 & 441 }}). Tempering out [[5120/5103|hemifamity comma]] (5120/5103) leads to alphatrimot, [[6144/6125|porwell comma]] (6144/6125) leads to alphatrident, and [[4375/4374|ragisma]] (4375/4374) leads to alphatrillium. | ||
== Alphatricot == | == Alphatricot == | ||
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{{Mapping|legend=1| 1 0 -13 | 0 3 29 }} | {{Mapping|legend=1| 1 0 -13 | 0 3 29 }} | ||
: mapping generators: ~2, ~59049/40960 | : mapping generators: ~2, ~59049/40960 | ||
[[Optimal tuning]]s: | [[Optimal tuning]]s: | ||
* [[ | * [[WE]]: ~2 = 1199.9762{{c}}, ~59049/40960 = 633.9998{{c}} | ||
: [[error map]]: {{val| 0. | : [[error map]]: {{val| -0.024 +0.044 -0.010 }} | ||
* [[ | * [[CWE]]: ~2 = 1200.0000{{c}}, ~59049/40960 = 634.0116{{c}} | ||
: error map: {{val| 0. | : error map: {{val| 0.000 +0.080 +0.022 }} | ||
{{Optimal ET sequence|legend=1| 53, 229, 282, 335, 388, 441, 1376, 1817, 2258, 15365bbc, 17632bbc }} | {{Optimal ET sequence|legend=1| 53, 229, 282, 335, 388, 441, 1376, 1817, 2258, 15365bbc, 17632bbc }} | ||
[[Badness]] ( | [[Badness]] (Sintel): 1.08 | ||
; Scales | ; Scales | ||
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* [[Alphatricot19]] – improper [[17L 2s]] | * [[Alphatricot19]] – improper [[17L 2s]] | ||
=== 2.3.5.13 subgroup === | === Alphatrimot (2.3.5.13 subgroup) === | ||
{{See also| No-fives subgroup temperaments #Threedic }} | {{See also| No-fives subgroup temperaments #Threedic }} | ||
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Optimal tunings: | Optimal tunings: | ||
* | * WE: ~2 = 1200.2092{{c}}, ~13/9 = 634.1076{{c}} | ||
* | * CWE: ~2 = 1200.0000{{c}}, ~13/9 = 634.0032{{c}} | ||
{{Optimal ET sequence|legend=0| 17c, 36c, 53 }} | {{Optimal ET sequence|legend=0| 17c, 36c, 53, 335f, 388f, …, 653ff }} | ||
Badness (Sintel): 1. | Badness (Sintel): 1.26 | ||
=== | === Alphatrillium (2.3.5.13 subgroup) === | ||
However, alphatricot in the 5-limit is far more accurate than threedic. | However, alphatricot in the 5-limit is far more accurate than threedic. Alphatrillium interprets the generator as ~[[75/52]] instead of 13/9, making the tempering of [[140625/140608]], the catasma, instead of the threedie. It also tempers out [[256000/255879]], the phaotisma. | ||
Subgroup: 2.3.5.13 | Subgroup: 2.3.5.13 | ||
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Optimal tunings: | Optimal tunings: | ||
* | * WE: ~2 = 1199.9796{{c}}, ~75/52 = 634.0000{{c}} | ||
* | * CWE: ~2 = 1200.0000{{c}}, ~75/52 = 634.0103{{c}} | ||
{{Optimal ET sequence|legend=1| 17cff, 36cff, 53, 282, 335, 388, 441, 494, 935 }} | {{Optimal ET sequence|legend=1| 17cff, 36cff, 53, 282, 335, 388, 441, 494, 935, 6051f, 6986f, …, 10726bff }} | ||
Badness (Sintel): 0.181 | Badness (Sintel): 0.181 | ||
== Alphatrillium == | == Alphatrillium == | ||
Alphatrillium, named by [[Xenllium]] in 2021 as ''trillium'' but renamed following the specifications of ploidacot, can be described as the {{nowrap| 53 & 441 }} temperament, tempering out the [[ragisma]] aside from the alphatricot comma. [[441edo]] is a good tuning for this temperament, with generator 233\441. The harmonic 7 is found at -95 generator steps, so that the smallest [[mos scale]] is the 123- | Alphatrillium, named by [[Xenllium]] in 2021 as ''trillium'' but renamed following the specifications of ploidacot, can be described as the {{nowrap| 53 & 441 }} temperament, tempering out the [[ragisma]] aside from the alphatricot comma. [[441edo]] is a good tuning for this temperament, with generator 233\441. The harmonic 7 is found at -95 generator steps, so that the smallest [[mos scale]] that contains it is the 123-note one, though otonal and utonal tetrads don't occur until the 176-note mos due to 7/5 being mapped to -124 generators. For much simpler mappings of 7 at the cost of higher errors, you could try [[#Alphatrident|alphatrident]] and [[#Alphatrimot|alphatrimot]]. | ||
It can be extended to the 11-limit by tempering out [[131072/130977]], and to the 13-limit by tempering out [[2080/2079]], [[4096/4095]] and [[4225/4224]]. The optimal tunings in the 11- and 13-limit lean towards [[494edo]]; [[935edo]] and especially [[1429edo]] are recommendable tunings. | It can be extended to the 11-limit by tempering out [[131072/130977]], and to the 13-limit by tempering out [[2080/2079]], [[4096/4095]] and [[4225/4224]]. The optimal tunings in the 11- and 13-limit lean towards [[494edo]]; [[935edo]] and especially [[1429edo]] are recommendable tunings. | ||
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[[Subgroup]]: 2.3.5.7 | [[Subgroup]]: 2.3.5.7 | ||
[[Comma list]]: 4375/4374, | [[Comma list]]: 4375/4374, {{monzo| 40 -22 -1 -1 }} | ||
{{Mapping|legend=1| 1 0 -13 53 | 0 3 29 -95 }} | {{Mapping|legend=1| 1 0 -13 53 | 0 3 29 -95 }} | ||
[[Optimal tuning]]s: | [[Optimal tuning]]s: | ||
* [[ | * [[WE]]: ~2 = 1199.9795{{c}}, ~59049/40960 = 634.0010{{c}} | ||
: [[error map]]: {{val| 0. | : [[error map]]: {{val| -0.021 +0.048 -0.019 -0.004 }} | ||
* [[ | * [[CWE]]: ~2 = 1200.0000{{c}}, ~59049/40960 = 634.0119{{c}} | ||
: error map: {{val| 0. | : error map: {{val| 0.000 +0.081 +0.030 +0.048 }} | ||
{{Optimal ET sequence|legend=1| 53, …, 335, 388, 441, 935, 1376, 3193, 4569, 5945, 10514b }} | {{Optimal ET sequence|legend=1| 53, …, 335, 388, 441, 935, 1376, 3193, 4569, 5945, 10514b }} | ||
[[Badness]] ( | [[Badness]] (Sintel): 0.781 | ||
=== 11-limit === | === 11-limit === | ||
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Optimal tunings: | Optimal tunings: | ||
* | * WE: ~2 = 1199.9551{{c}}, ~3888/2695 = 633.9857{{c}} | ||
* | * CWE: ~2 = 1200.0000{{c}}, ~3888/2695 = 634.0094{{c}} | ||
{{Optimal ET sequence|legend=0| 53, 388e, 441, 494, 935, 1429, 1923e }} | {{Optimal ET sequence|legend=0| 53, 388e, 441, 494, 935, 1429, 1923e }} | ||
Badness ( | Badness (Sintel): 1.55 | ||
==== 13-limit ==== | ==== 13-limit ==== | ||
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Optimal tunings: | Optimal tunings: | ||
* | * WE: ~2 = 1199.9603{{c}}, ~75/52 = 633.9885{{c}} | ||
* | * CWE: ~2 = 1200.0000{{c}}, ~75/52 = 634.0094{{c}} | ||
{{Optimal ET sequence|legend=0| 53, 388e, 441, 494, 935, 1429, 1923e, 3352de }} | {{Optimal ET sequence|legend=0| 53, 388e, 441, 494, 935, 1429, 1923e, 3352de }} | ||
Badness ( | Badness (Sintel): 0.801 | ||
=== Pseudotrillium === | === Pseudotrillium === | ||
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Optimal tunings: | Optimal tunings: | ||
* | * WE: ~2 = 1200.0692{{c}}, ~231/160 = 634.0556{{c}} | ||
* | * CWE: ~2 = 1200.0000{{c}}, ~231/160 = 634.0191{{c}} | ||
{{Optimal ET sequence|legend=0| 53, 335, 388 }} | {{Optimal ET sequence|legend=0| 53, 335, 388 }} | ||
Badness ( | Badness (Sintel): 3.70 | ||
==== 13-limit ==== | ==== 13-limit ==== | ||
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Optimal tunings: | Optimal tunings: | ||
* | * WE: ~2 = 1200.0351{{c}}, ~75/52 = 634.0366{{c}} | ||
* | * CWE: ~2 = 1200.0000{{c}}, ~75/52 = 634.0181{{c}} | ||
{{Optimal ET sequence|legend=0| 53, 335, 388 }} | {{Optimal ET sequence|legend=0| 53, 335, 388 }} | ||
Badness ( | Badness (Sintel): 2.27 | ||
== Alphatrident == | == Alphatrident == | ||
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[[Optimal tuning]]s: | [[Optimal tuning]]s: | ||
* [[ | * [[WE]]: ~2 = 1199.7509{{c}}, ~4096/2835 = 633.9164{{c}} | ||
: [[error map]]: {{val| 0. | : [[error map]]: {{val| -0.249 -0.206 +0.500 +0.458 }} | ||
* [[ | * [[CWE]]: ~2 = 1200.0000{{c}}, ~4096/2835 = 634.0481{{c}} | ||
: error map: {{val| 0. | : error map: {{val| 0.000 +0.189 +1.081 +1.155 }} | ||
{{Optimal ET sequence|legend=1| 53, 176, 229, 282, 511, 793cd }} | {{Optimal ET sequence|legend=1| 53, 176, 229, 282, 511, 793cd }} | ||
[[Badness]] ( | [[Badness]] (Sintel): 2.57 | ||
=== 11-limit === | === 11-limit === | ||
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Optimal tunings: | Optimal tunings: | ||
* | * WE: ~2 = 1199.8432{{c}}, ~231/160 = 633.9840{{c}} | ||
* | * CWE: ~2 = 1200.0000{{c}}, ~231/160 = 634.0662{{c}} | ||
{{Optimal ET sequence|legend=0| 53, 123, 176, 229 }} | {{Optimal ET sequence|legend=0| 53, 123, 176, 229 }} | ||
Badness ( | Badness (Sintel): 2.46 | ||
=== 13-limit === | === 13-limit === | ||
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Optimal tunings: | Optimal tunings: | ||
* | * WE: ~2 = 1199.9675{{c}}, ~13/9 = 634.0480{{c}} | ||
* | * CWE: ~2 = 1200.0000{{c}}, ~13/9 = 634.0651{{c}} | ||
{{Optimal ET sequence|legend=0| 53, 123, 176, 229 }} | {{Optimal ET sequence|legend=0| 53, 123, 176, 229 }} | ||
Badness ( | Badness (Sintel): 1.93 | ||
== Alphatrimot == | == Alphatrimot == | ||
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[[Optimal tuning]]s: | [[Optimal tuning]]s: | ||
* [[ | * [[WE]]: ~2 = 1199.4448{{c}}, ~81/56 = 633.7326{{c}} | ||
: [[error map]]: {{val| 0. | : [[error map]]: {{val| -0.555 -0.757 +0.851 +3.898 }} | ||
* [[ | * [[CWE]]: ~2 = 1200.0000{{c}}, ~81/56 = 634.0071{{c}} | ||
: error map: {{val| 0. | : error map: {{val| 0.000 +0.066 -0.108 +5.252 }} | ||
{{Optimal ET sequence|legend=1| 17c, 36c, 53, 229dd, 282dd }} | {{Optimal ET sequence|legend=1| 17c, 36c, 53, 229dd, 282dd }} | ||
[[Badness]] ( | [[Badness]] (Sintel): 2.53 | ||
=== 11-limit === | === 11-limit === | ||
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Optimal tunings: | Optimal tunings: | ||
* | * WE: ~2 = 1199.9429{{c}}, ~63/44 = 633.9971{{c}} | ||
* | * CWE: ~2 = 1200.0000{{c}}, ~63/44 = 634.0253{{c}} | ||
{{Optimal ET sequence|legend=0| 17c, 36ce, 53 }} | {{Optimal ET sequence|legend=0| 17c, 36ce, 53 }} | ||
Badness ( | Badness (Sintel): 1.86 | ||
=== 13-limit === | === 13-limit === | ||
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Optimal tunings: | Optimal tunings: | ||
* | * WE: ~2 = 1200.1213{{c}}, ~13/9 = 634.0757{{c}} | ||
* | * CWE: ~2 = 1200.0000{{c}}, ~13/9 = 634.0154{{c}} | ||
{{Optimal ET sequence|legend=0| 17c, 36ce, 53 }} | {{Optimal ET sequence|legend=0| 17c, 36ce, 53 }} | ||
Badness ( | Badness (Sintel): 1.33 | ||
== Tritricot == | == Tritricot == | ||
[[Subgroup]]: 2.3.5.7 | [[Subgroup]]: 2.3.5.7 | ||
[[Comma list]]: 250047/250000, | [[Comma list]]: 250047/250000, {{monzo| 35 -23 -3 3 }} | ||
{{Mapping|legend=1| 3 | {{Mapping|legend=1| 3 0 -39 -74 | 0 3 29 52 }} | ||
: mapping generators: ~63/50, ~59049/40960 | |||
[[Optimal tuning]] ([[ | [[Optimal tuning]]s: | ||
* [[WE]]: ~63/50 = 399.9887{{c}}, ~59049/40960 = 633.7326{{c}} (~100352/91125 = 165.9790{{c}}) | |||
: [[error map]]: {{val| -0.034 +0.040 +0.081 -0.073 }} | |||
* [[CWE]]: ~63/50 = 400.0000{{c}}, ~59049/40960 = 634.0155{{c}} (~100352/91125 = 165.9845{{c}}) | |||
: error map: {{val| 0.000 +0.092 -0.137 -0.018 }} | |||
{{Optimal ET sequence|legend=1| 159, 282, 441, 2487, 2928 | {{Optimal ET sequence|legend=1| 159, 282, 441, 1605, 2046, 2487, 2928 }} | ||
[[Badness]] ( | [[Badness]] (Sintel): 2.18 | ||
=== 11-limit === | === 11-limit === | ||
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Comma list: 4000/3993, 166698/166375, 200704/200475 | Comma list: 4000/3993, 166698/166375, 200704/200475 | ||
Mapping: {{mapping| 3 | Mapping: {{mapping| 3 0 -39 -74 -34 | 0 3 29 52 28 }} | ||
Optimal | Optimal tunings: | ||
* WE: ~63/50 = 399.9686{{c}}, ~3969/2750 = 633.9667{{c}} (~11/10 = 165.9705{{c}}) | |||
* CWE: ~63/50 = 400.0000{{c}}, ~3969/2750 = 634.0142{{c}} (~11/10 = 165.9858{{c}}) | |||
{{Optimal ET sequence|legend=0| 159, 282, 441 }} | {{Optimal ET sequence|legend=0| 159, 282, 441 }} | ||
Badness ( | Badness (Sintel): 2.45 | ||
==== 13-limit ==== | ==== 13-limit ==== | ||
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Comma list: 1575/1573, 2080/2079, 34398/34375, 43904/43875 | Comma list: 1575/1573, 2080/2079, 34398/34375, 43904/43875 | ||
Mapping: {{mapping| 3 | Mapping: {{mapping| 3 0 -39 -74 -34 -84 | 0 3 29 52 28 60 }} | ||
Optimal | Optimal tunings: | ||
* WE: ~63/50 = 399.9692{{c}}, ~75/52 = 633.9669{{c}} (~11/10 = 165.9714{{c}}) | |||
* CWE: ~63/50 = 400.0000{{c}}, ~75/52 = 634.0137{{c}} (~11/10 = 165.9863{{c}}) | |||
{{Optimal ET sequence|legend=0| 159, 282, 441 }} | {{Optimal ET sequence|legend=0| 159, 282, 441 }} | ||
Badness ( | Badness (Sintel): 1.47 | ||
==== 17-limit ==== | ==== 17-limit ==== | ||
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Comma list: 936/935, 1575/1573, 1701/1700, 2025/2023, 8624/8619 | Comma list: 936/935, 1575/1573, 1701/1700, 2025/2023, 8624/8619 | ||
Mapping: {{mapping| 3 | Mapping: {{mapping| 3 0 -39 -74 -34 -84 -2 | 0 3 29 52 28 60 9 }} | ||
Optimal | Optimal tunings: | ||
* WE: ~34/27 = 399.9491{{c}}, ~75/52 = 633.9389{{c}} (~11/10 = 165.9594{{c}}) | |||
* CWE: ~34/27 = 400.0000{{c}}, ~75/52 = 634.0166{{c}} (~11/10 = 165.9834{{c}}) | |||
{{Optimal ET sequence|legend=0| 159, 282, 441 }} | {{Optimal ET sequence|legend=0| 159, 282, 441, 723efg, 1164eefgg }} | ||
Badness ( | Badness (Sintel): 1.32 | ||
=== Noletaland === | === Noletaland === | ||
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Mapping: {{mapping| 3 6 19 30 35 | 0 -9 -87 -156 -178 }} | Mapping: {{mapping| 3 6 19 30 35 | 0 -9 -87 -156 -178 }} | ||
: mappin generators: ~63/50, ~1936/1875 | : mappin generators: ~63/50, ~1936/1875 | ||
Optimal | Optimal tunings: | ||
* WE: ~63/50 = 399.9895{{c}}, ~1936/1875 = 55.3269{{c}} | |||
* CWE: ~63/50 = 400.0000{{c}}, ~1936/1875 = 55.3286{{c}} | |||
{{Optimal ET sequence|legend=0| 282, 759de, 1041, 1323, 4251e }} | {{Optimal ET sequence|legend=0| 282, 759de, 1041, 1323, 4251e }} | ||
Badness ( | Badness (Sintel): 5.23 | ||
==== 13-limit ==== | ==== 13-limit ==== | ||
| Line 322: | Line 333: | ||
Mapping: {{mapping| 3 6 19 30 35 36 | 0 -9 -87 -156 -178 -180 }} | Mapping: {{mapping| 3 6 19 30 35 36 | 0 -9 -87 -156 -178 -180 }} | ||
Optimal | Optimal tunings: | ||
* WE: ~63/50 = 399.9896{{c}}, ~1936/1875 = 55.3273{{c}} | |||
* CWE: ~63/50 = 400.0000{{c}}, ~1936/1875 = 55.3289{{c}} | |||
{{Optimal ET sequence|legend=0| 282, 759def, 1041, 1323 }} | {{Optimal ET sequence|legend=0| 282, 759def, 1041, 1323 }} | ||
Badness ( | Badness (Sintel): 2.99 | ||
==== 17-limit ==== | ==== 17-limit ==== | ||
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Mapping: {{mapping| 3 6 19 30 35 36 29 | 0 -9 -87 -156 -178 -180 -121 }} | Mapping: {{mapping| 3 6 19 30 35 36 29 | 0 -9 -87 -156 -178 -180 -121 }} | ||
Optimal | Optimal tunings: | ||
* WE: ~63/50 = 399.9876{{c}}, ~351/340 = 55.3270{{c}} | |||
* CWE: ~63/50 = 400.0000{{c}}, ~351/340 = 55.3290{{c}} | |||
{{Optimal ET sequence|legend=0| 282, 759def, 1041, 1323 }} | {{Optimal ET sequence|legend=0| 282, 759def, 1041, 1323 }} | ||
Badness ( | Badness (Sintel): 1.93 | ||
==== 19-limit ==== | ==== 19-limit ==== | ||
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Mapping: {{mapping| 3 6 19 30 35 36 29 18 | 0 -9 -87 -156 -178 -180 -121 -38 }} | Mapping: {{mapping| 3 6 19 30 35 36 29 18 | 0 -9 -87 -156 -178 -180 -121 -38 }} | ||
Optimal | Optimal tunings: | ||
* WE: ~63/50 = 399.9914{{c}}, ~351/340 = 55.3277{{c}} | |||
* CWE: ~63/50 = 400.0000{{c}}, ~351/340 = 55.3291{{c}} | |||
{{Optimal ET sequence|legend=0| 282, 759def, 1041, 1323 }} | {{Optimal ET sequence|legend=0| 282, 759def, 1041, 1323 }} | ||
Badness ( | Badness (Sintel): 1.64 | ||
==== 23-limit ==== | ==== 23-limit ==== | ||
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Mapping: {{mapping| 3 6 19 30 35 36 29 18 31 | 0 -9 -87 -156 -178 -180 -121 -38 -126 }} | Mapping: {{mapping| 3 6 19 30 35 36 29 18 31 | 0 -9 -87 -156 -178 -180 -121 -38 -126 }} | ||
Optimal | Optimal tunings: | ||
* WE: ~63/50 = 399.9899{{c}}, ~351/340 = 55.3276{{c}} | |||
* CWE: ~63/50 = 400.0000{{c}}, ~351/340 = 55.3291{{c}} | |||
{{Optimal ET sequence|legend=0| 282, 759def, 1041, 1323 }} | {{Optimal ET sequence|legend=0| 282, 759def, 1041, 1323 }} | ||
Badness ( | Badness (Sintel): 1.39 | ||
==== 29-limit ==== | ==== 29-limit ==== | ||
| Line 374: | Line 393: | ||
Mapping: {{mapping| 3 6 19 30 35 36 29 18 31 19 | 0 -9 -87 -156 -178 -180 -121 -38 -126 -32 }} | Mapping: {{mapping| 3 6 19 30 35 36 29 18 31 19 | 0 -9 -87 -156 -178 -180 -121 -38 -126 -32 }} | ||
Optimal | Optimal tunings: | ||
* WE: ~63/50 = 399.9940{{c}}, ~351/340 = 55.3283{{c}} | |||
* CWE: ~63/50 = 400.0000{{c}}, ~351/340 = 55.3293{{c}} | |||
{{Optimal ET sequence|legend=0| 282, 759def, 1041, 1323 }} | {{Optimal ET sequence|legend=0| 282, 759def, 1041, 1323 }} | ||
Badness ( | Badness (Sintel): 1.40 | ||
== Notes == | == Notes == | ||
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[[Category:Temperament families]] | [[Category:Temperament families]] | ||
[[Category:Alphatricot family| ]] <!-- main article --> | [[Category:Alphatricot family| ]] <!-- main article --> | ||
[[Category:Rank 2]] | [[Category:Rank 2]] | ||