Alphatricot family: Difference between revisions
m Spell the periods in cents. Note the badness metric being used. Misc. cleanup |
Sorting and +descriptions mirroring vulture family |
||
Line 4: | Line 4: | ||
== Alphatricot == | == Alphatricot == | ||
Alphatricot is a [[microtemperament]] whose generator is the real cube root of [[3/1|3rd]] [[harmonic]], 3<sup>1/3</sup>, tuned between 63/44 and 13/9. Its [[ploidacot]] is alpha-tricot. It is a member of the [[schismic–Mercator equivalence continuum]] with {{nowrap|''n'' {{=}} 3 }}, so unless 53edo is used as a tuning, the schisma is always observed. | Alphatricot is a [[microtemperament]] whose generator is the real cube root of the [[3/1|3rd]] [[harmonic]], 3<sup>1/3</sup>, tuned between [[63/44]] and [[13/9]] and representing the acute augmented fourth of 59049/40960, that is, a [[729/512|Pythagorean augmented fourth]] plus a [[81/80|syntonic comma]]. Its [[ploidacot]] is alpha-tricot. It is a member of the [[schismic–Mercator equivalence continuum]] with {{nowrap|''n'' {{=}} 3 }}, so unless 53edo is used as a tuning, the [[schisma]] is always observed. | ||
The temperament was named by [[Paul Erlich]] in 2002 as ''tricot''<ref>[https://yahootuninggroupsultimatebackup.github.io/tuning-math/topicId_5041.html Yahoo! Tuning Group | ''Paul's new names'']</ref><ref>[https://yahootuninggroupsultimatebackup.github.io/tuning-math/topicId_5080.html#5113 Yahoo! Tuning Group | ''Ultimate 5-limit comma list'']</ref>, but renamed in 2025 following the specifications of ploidacot. | The temperament was named by [[Paul Erlich]] in 2002 as ''tricot''<ref>[https://yahootuninggroupsultimatebackup.github.io/tuning-math/topicId_5041.html Yahoo! Tuning Group | ''Paul's new names'']</ref><ref>[https://yahootuninggroupsultimatebackup.github.io/tuning-math/topicId_5080.html#5113 Yahoo! Tuning Group | ''Ultimate 5-limit comma list'']</ref>, but renamed in 2025 following the specifications of ploidacot. | ||
Line 47: | Line 47: | ||
* [[Alphatricot19]] – improper [[17L 2s]] | * [[Alphatricot19]] – improper [[17L 2s]] | ||
== | == 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-tone one. For much simpler mappings of 7 at the cost of higher errors, you could try [[#Alphatrident|alphatrident]] and [[#Alphatrimot|alphatrimot]]. | |||
[[Subgroup]]: 2.3.5.7 | [[Subgroup]]: 2.3.5.7 | ||
[[Comma list]]: | [[Comma list]]: 4375/4374, 1099511627776/1098337086315 | ||
{{Mapping|legend=1| 1 0 -13 | {{Mapping|legend=1| 1 0 -13 53 | 0 3 29 -95 }} | ||
{{Multival|legend=1| 3 29 | {{Multival|legend=1| 3 29 -95 39 -159 -302 }} | ||
[[Optimal tuning]] ([[POTE]]): ~2 = 1200.0000, ~ | [[Optimal tuning]] ([[POTE]]): ~2 = 1200.0000, ~23625/16384 = 634.0118 | ||
{{Optimal ET sequence|legend=1| | {{Optimal ET sequence|legend=1| 53, 441, 494, 935, 1376, 3193, 4569 }} | ||
[[Badness]] (Smith): 0. | [[Badness]] (Smith): 0.030852 | ||
=== 11-limit === | === 11-limit === | ||
Subgroup: 2.3.5.7.11 | Subgroup: 2.3.5.7.11 | ||
Comma list: | Comma list: 4375/4374, 131072/130977, 759375/758912 | ||
Mapping: {{mapping| 1 0 -13 53 -89 | 0 3 29 -95 175 }} | |||
Optimal tuning (POTE): ~2 = 1200.0000, ~3888/2695 = 634.0094 | |||
{{Optimal ET sequence|legend=0| 53, 441, 494, 935, 1429 }} | |||
Badness (Smith): 0.046758 | |||
==== 13-limit ==== | |||
Subgroup: 2.3.5.7.11.13 | |||
Comma list: 2080/2079, 4096/4095, 4375/4374, 78125/78078 | |||
Mapping: {{mapping| 1 0 -13 53 -89 -28 | 0 3 29 -95 175 60 }} | |||
Optimal tuning (POTE): ~2 = 1200.0000, ~75/52 = 634.0095 | |||
{{Optimal ET sequence|legend=0| 53, 441, 494, 935, 1429 }} | |||
Badness (Smith): 0.019393 | |||
=== Pseudotrillium === | |||
Subgroup: 2.3.5.7.11 | |||
Comma list: 4375/4374, 5632/5625, 4108797/4096000 | |||
Mapping: {{mapping| 1 0 -13 - | Mapping: {{mapping| 1 0 -13 53 -61 | 0 3 29 -95 122 }} | ||
Optimal tuning (POTE): ~2 = 1200.0000, ~ | Optimal tuning (POTE): ~2 = 1200.0000, ~231/160 = 634.0190 | ||
{{Optimal ET sequence|legend=0| | {{Optimal ET sequence|legend=0| 53, 335, 388 }} | ||
Badness (Smith): 0. | Badness (Smith): 0.111931 | ||
=== 13-limit === | ==== 13-limit ==== | ||
Subgroup: 2.3.5.7.11.13 | Subgroup: 2.3.5.7.11.13 | ||
Comma list: | Comma list: 847/845, 1001/1000, 4096/4095, 4375/4374 | ||
Mapping: {{mapping| 1 0 -13 - | Mapping: {{mapping| 1 0 -13 53 -61 -28 | 0 3 29 -95 122 60 }} | ||
Optimal tuning (POTE): ~2 = 1200.0000, ~ | Optimal tuning (POTE): ~2 = 1200.0000, ~75/52 = 634.0181 | ||
{{Optimal ET sequence|legend=0| | {{Optimal ET sequence|legend=0| 53, 335, 388 }} | ||
Badness (Smith): 0. | Badness (Smith): 0.054837 | ||
== Alphatrident == | == Alphatrident == | ||
Alphatrident, named by [[Xenllium]] in 2021 as ''trident'' but renamed following the specifications of ploidacot, can be described as the {{nowrap| 53 & 229 }} temperament. | Alphatrident, also named by [[Xenllium]] in 2021 as ''trident'' but renamed following the specifications of ploidacot, can be described as the {{nowrap| 53 & 229 }} temperament. It tempers out the [[garischisma]], 33554432/33480783 ({{monzo| 25 -14 0 1 }}), and finds the harmonic 7 at -14 fifths or {{nowrap| (-14) × 3 {{=}} -42 }} generator steps, so that the smallest mos scale that includes it is the 53-note one. | ||
[[Subgroup]]: 2.3.5.7 | [[Subgroup]]: 2.3.5.7 | ||
Line 133: | Line 159: | ||
Badness (Smith): 0.046593 | Badness (Smith): 0.046593 | ||
== | == Alphatrimot == | ||
Alphatrimot, named by [[Petr Pařízek]] in 2011<ref>[https://yahootuninggroupsultimatebackup.github.io/tuning/topicId_101780.html Yahoo! Tuning Group | ''Suggested names for the unclasified temperaments'']</ref> but renamed following the specifications of ploidacot, can be described as the {{nowrap| 53 & 70 }} temperament. It finds prime 7 at only 11 generators up so that the generator is interpreted as a sharp ~[[81/56]], but is more of a full 13-limit system in its own right. [[123edo]] in the 123de val is a great tuning for it. Mos scales of 5, 7, 9, 11, 13, 15, 17, 19, 36 or 53 notes are available. | |||
[[Subgroup]]: 2.3.5.7 | [[Subgroup]]: 2.3.5.7 | ||
[[Comma list]]: | [[Comma list]]: 2430/2401, 5120/5103 | ||
{{Mapping|legend=1| 1 0 -13 | {{Mapping|legend=1| 1 0 -13 -3 | 0 3 29 11 }} | ||
{{Multival|legend=1| 3 29 | {{Multival|legend=1| 3 29 11 39 9 -56 }} | ||
[[Optimal tuning]] ([[POTE]]): ~2 = 1200.0000, ~ | [[Optimal tuning]] ([[POTE]]): ~2 = 1200.0000, ~81/56 = 634.0259 | ||
{{Optimal ET sequence|legend=1| | {{Optimal ET sequence|legend=1| 17c, 36c, 53, 70, 229dd, 282dd }} | ||
[[Badness]] (Smith): 0. | [[Badness]] (Smith): 0.100127 | ||
=== 11-limit === | === 11-limit === | ||
Subgroup: 2.3.5.7.11 | Subgroup: 2.3.5.7.11 | ||
Comma list: | Comma list: 99/98, 121/120, 5120/5103 | ||
Mapping: {{mapping| 1 0 -13 | Mapping: {{mapping| 1 0 -13 -3 -5 | 0 3 29 11 16 }} | ||
Optimal tuning (POTE): ~2 = 1200.0000, ~ | Optimal tuning (POTE): ~2 = 1200.0000, ~63/44 = 634.0273 | ||
{{Optimal ET sequence|legend=0| | {{Optimal ET sequence|legend=0| 17c, 36ce, 53, 70, 123de }} | ||
Badness (Smith): 0. | Badness (Smith): 0.056134 | ||
=== 13-limit === | |||
Subgroup: 2.3.5.7.11.13 | Subgroup: 2.3.5.7.11.13 | ||
Comma list: | Comma list: 99/98, 121/120, 169/168, 352/351 | ||
Mapping: {{mapping| 1 0 -13 | Mapping: {{mapping| 1 0 -13 -3 -5 0 | 0 3 29 11 16 7 }} | ||
Optimal tuning (POTE): ~2 = 1200.0000, ~ | Optimal tuning (POTE): ~2 = 1200.0000, ~13/9 = 634.0115 | ||
{{Optimal ET sequence|legend=0| | {{Optimal ET sequence|legend=0| 17c, 36ce, 53, 70, 123de }} | ||
Badness (Smith): 0. | Badness (Smith): 0.032102 | ||
== Tritricot == | == Tritricot == | ||
Line 257: | Line 257: | ||
=== Noletaland === | === Noletaland === | ||
Noletaland is described as 282 & 1323, and it combines the smallest consistent edo in the 29-odd-limit with the smallest uniquely consistent. It reaches 4/3 in nine generators ([[noleta]]-…) and tempers out the landscape comma (…-land). Noletaland reaches [[13/11]] in 2 generators, and [[29/19]] in 5. Then there is [[44/25]] in 4, and [[152/115]] in also 4. | Noletaland is described as {{nowrap| 282 & 1323 }}, and it combines the smallest consistent edo in the 29-odd-limit with the smallest uniquely consistent. It reaches 4/3 in nine generators ([[noleta]]-…) and tempers out the landscape comma (…-land). Noletaland reaches [[13/11]] in 2 generators, and [[29/19]] in 5. Then there is [[44/25]] in 4, and [[152/115]] in also 4. | ||
Subgroup: 2.3.5.7.11 | Subgroup: 2.3.5.7.11 |
Revision as of 15:03, 16 March 2025
The alphatricot family of temperaments tempers out the alphatricot comma (monzo: [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 hemifamity comma (5120/5103) leads to alphatrimot, porwell comma (6144/6125) leads to alphatrident, and ragisma (4375/4374) leads to alphatrillium.
Alphatricot
Alphatricot is a microtemperament whose generator is the real cube root of the 3rd harmonic, 31/3, tuned between 63/44 and 13/9 and representing the acute augmented fourth of 59049/40960, that is, a Pythagorean augmented fourth plus a syntonic comma. Its ploidacot is alpha-tricot. It is a member of the schismic–Mercator equivalence continuum with n = 3, so unless 53edo is used as a tuning, the schisma is always observed.
The temperament was named by Paul Erlich in 2002 as tricot[1][2], but renamed in 2025 following the specifications of ploidacot.
Subgroup: 2.3.5
Comma list: [39 -29 3⟩
Mapping: [⟨1 0 -13], ⟨0 3 29]]
- mapping generators: ~2, ~59049/40960
Wedgie: ⟨⟨ 3 29 39 ]]
Optimal tuning (POTE): ~2 = 1200.000, ~59049/40960 = 634.012
Optimal ET sequence: 53, 229, 282, 335, 388, 441, 1376, 1817, 2258
Badness (Smith): 0.046093
2.3.5.13 subgroup
Subgroup: 2.3.5.13
Comma list: 2197/2187, 41067/40960
Sval mapping: [⟨1 0 -13 0], ⟨0 3 29 7]]
Gencom mapping: [⟨1 0 -13 0 0 0], ⟨0 3 29 0 0 7]]
- gencom: [2 13/9; 2197/2187, 41067/40960]
Optimal tuning (POTE): ~2 = 1200.000, ~13/9 = 633.997
Optimal ET sequence: 17c, 36c, 53
RMS error: 0.2342 cents
- Scales
- Alphatricot17 – proper 2L 15s
- Alphatricot19 – improper 17L 2s
Alphatrillium
Alphatrillium, named by Xenllium in 2021 as trillium but renamed following the specifications of ploidacot, can be described as the 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-tone one. For much simpler mappings of 7 at the cost of higher errors, you could try alphatrident and alphatrimot.
Subgroup: 2.3.5.7
Comma list: 4375/4374, 1099511627776/1098337086315
Mapping: [⟨1 0 -13 53], ⟨0 3 29 -95]]
Wedgie: ⟨⟨ 3 29 -95 39 -159 -302 ]]
Optimal tuning (POTE): ~2 = 1200.0000, ~23625/16384 = 634.0118
Optimal ET sequence: 53, 441, 494, 935, 1376, 3193, 4569
Badness (Smith): 0.030852
11-limit
Subgroup: 2.3.5.7.11
Comma list: 4375/4374, 131072/130977, 759375/758912
Mapping: [⟨1 0 -13 53 -89], ⟨0 3 29 -95 175]]
Optimal tuning (POTE): ~2 = 1200.0000, ~3888/2695 = 634.0094
Optimal ET sequence: 53, 441, 494, 935, 1429
Badness (Smith): 0.046758
13-limit
Subgroup: 2.3.5.7.11.13
Comma list: 2080/2079, 4096/4095, 4375/4374, 78125/78078
Mapping: [⟨1 0 -13 53 -89 -28], ⟨0 3 29 -95 175 60]]
Optimal tuning (POTE): ~2 = 1200.0000, ~75/52 = 634.0095
Optimal ET sequence: 53, 441, 494, 935, 1429
Badness (Smith): 0.019393
Pseudotrillium
Subgroup: 2.3.5.7.11
Comma list: 4375/4374, 5632/5625, 4108797/4096000
Mapping: [⟨1 0 -13 53 -61], ⟨0 3 29 -95 122]]
Optimal tuning (POTE): ~2 = 1200.0000, ~231/160 = 634.0190
Optimal ET sequence: 53, 335, 388
Badness (Smith): 0.111931
13-limit
Subgroup: 2.3.5.7.11.13
Comma list: 847/845, 1001/1000, 4096/4095, 4375/4374
Mapping: [⟨1 0 -13 53 -61 -28], ⟨0 3 29 -95 122 60]]
Optimal tuning (POTE): ~2 = 1200.0000, ~75/52 = 634.0181
Optimal ET sequence: 53, 335, 388
Badness (Smith): 0.054837
Alphatrident
Alphatrident, also named by Xenllium in 2021 as trident but renamed following the specifications of ploidacot, can be described as the 53 & 229 temperament. It tempers out the garischisma, 33554432/33480783 ([25 -14 0 1⟩), and finds the harmonic 7 at -14 fifths or (-14) × 3 = -42 generator steps, so that the smallest mos scale that includes it is the 53-note one.
Subgroup: 2.3.5.7
Comma list: 6144/6125, 14348907/14336000
Mapping: [⟨1 0 -13 25], ⟨0 3 29 -42]]
Wedgie: ⟨⟨ 3 29 -42 39 -75 -179 ]]
Optimal tuning (POTE): ~2 = 1200.0000, ~4096/2835 = 634.0480
Optimal ET sequence: 53, 176, 229, 282, 511
Badness (Smith): 0.101694
11-limit
Subgroup: 2.3.5.7.11
Comma list: 3388/3375, 6144/6125, 8019/8000
Mapping: [⟨1 0 -13 25 -33], ⟨0 3 29 -42 69]]
Optimal tuning (POTE): ~2 = 1200.0000, ~231/160 = 634.0669
Optimal ET sequence: 53, 176, 229
Badness (Smith): 0.074272
13-limit
Subgroup: 2.3.5.7.11.13
Comma list: 351/350, 2080/2079, 2197/2187, 3146/3125
Mapping: [⟨1 0 -13 25 -33 0], ⟨0 3 29 -42 69 7]]
Optimal tuning (POTE): ~2 = 1200.0000, ~13/9 = 634.0652
Optimal ET sequence: 53, 176, 229
Badness (Smith): 0.046593
Alphatrimot
Alphatrimot, named by Petr Pařízek in 2011[3] but renamed following the specifications of ploidacot, can be described as the 53 & 70 temperament. It finds prime 7 at only 11 generators up so that the generator is interpreted as a sharp ~81/56, but is more of a full 13-limit system in its own right. 123edo in the 123de val is a great tuning for it. Mos scales of 5, 7, 9, 11, 13, 15, 17, 19, 36 or 53 notes are available.
Subgroup: 2.3.5.7
Comma list: 2430/2401, 5120/5103
Mapping: [⟨1 0 -13 -3], ⟨0 3 29 11]]
Wedgie: ⟨⟨ 3 29 11 39 9 -56 ]]
Optimal tuning (POTE): ~2 = 1200.0000, ~81/56 = 634.0259
Optimal ET sequence: 17c, 36c, 53, 70, 229dd, 282dd
Badness (Smith): 0.100127
11-limit
Subgroup: 2.3.5.7.11
Comma list: 99/98, 121/120, 5120/5103
Mapping: [⟨1 0 -13 -3 -5], ⟨0 3 29 11 16]]
Optimal tuning (POTE): ~2 = 1200.0000, ~63/44 = 634.0273
Optimal ET sequence: 17c, 36ce, 53, 70, 123de
Badness (Smith): 0.056134
13-limit
Subgroup: 2.3.5.7.11.13
Comma list: 99/98, 121/120, 169/168, 352/351
Mapping: [⟨1 0 -13 -3 -5 0], ⟨0 3 29 11 16 7]]
Optimal tuning (POTE): ~2 = 1200.0000, ~13/9 = 634.0115
Optimal ET sequence: 17c, 36ce, 53, 70, 123de
Badness (Smith): 0.032102
Tritricot
Subgroup: 2.3.5.7
Comma list: 250047/250000, 11785390260224/11767897353375
Mapping: [⟨3 6 19 30], ⟨0 -3 -29 -52]]
Wedgie: ⟨⟨ 9 87 156 117 222 118 ]]
Optimal tuning (POTE): ~63/50 = 400.0000, ~100352/91125 = 165.9837
Optimal ET sequence: 159, 282, 441, 2487, 2928, 3369
Badness (Smith): 0.086081
11-limit
Subgroup: 2.3.5.7.11
Comma list: 4000/3993, 166698/166375, 200704/200475
Mapping: [⟨3 6 19 30 22], ⟨0 -3 -29 -52 -28]]
Optimal tuning (POTE): ~63/50 = 400.0000, ~11/10 = 165.9835
Optimal ET sequence: 159, 282, 441
Badness (Smith): 0.074002
13-limit
Subgroup: 2.3.5.7.11.13
Comma list: 1575/1573, 2080/2079, 34398/34375, 43904/43875
Mapping: [⟨3 6 19 30 22 36], ⟨0 -3 -29 -52 -28 -60]]
Optimal tuning (POTE): ~63/50 = 400.0000, ~11/10 = 165.9842
Optimal ET sequence: 159, 282, 441
Badness (Smith): 0.035641
17-limit
Subgroup: 2.3.5.7.11.13.17
Comma list: 936/935, 1575/1573, 1701/1700, 2025/2023, 8624/8619
Mapping: [⟨3 6 19 30 22 36 16], ⟨0 -3 -29 -52 -28 -60 -9]]
Optimal tuning (POTE): ~34/27 = 400.0000, ~11/10 = 165.9805
Optimal ET sequence: 159, 282, 441
Badness (Smith): 0.025972
Noletaland
Noletaland is described as 282 & 1323, and it combines the smallest consistent edo in the 29-odd-limit with the smallest uniquely consistent. It reaches 4/3 in nine generators (noleta-…) and tempers out the landscape comma (…-land). Noletaland reaches 13/11 in 2 generators, and 29/19 in 5. Then there is 44/25 in 4, and 152/115 in also 4.
Subgroup: 2.3.5.7.11
Comma list: 250047/250000, 56723625/56689952, 78675968/78594219
Mapping: [⟨3 6 19 30 35], ⟨0 -9 -87 -156 -178]]
- mappin generators: ~63/50, ~1936/1875
Optimal tuning (CTE): ~63/50 = 400.0000, ~1936/1875 = 55.3290
Optimal ET sequence: 282, 759de, 1041, 1323, 4251e
Badness (Smith): 0.158
13-limit
Subgroup: 2.3.5.7.11.13
Comma list: 10648/10647, 43904/43875, 85750/85683, 250047/250000
Mapping: [⟨3 6 19 30 35 36], ⟨0 -9 -87 -156 -178 -180]]
Optimal tuning (CTE): ~63/50 = 400.0000, ~1936/1875 = 55.3294
Optimal ET sequence: 282, 759def, 1041, 1323
Badness (Smith): 0.0725
17-limit
Subgroup: 2.3.5.7.11.13.17
Comma list: 2058/2057, 4914/4913, 8624/8619, 12376/12375, 250047/250000
Mapping: [⟨3 6 19 30 35 36 29], ⟨0 -9 -87 -156 -178 -180 -121]]
Optimal tuning (CTE): ~63/50 = 400.0000, ~351/340 = 55.3295
Optimal ET sequence: 282, 759def, 1041, 1323
Badness (Smith): 0.0380
19-limit
Subgroup: 2.3.5.7.11.13.17.19
Comma list: 2058/2057, 2926/2925, 3136/3135, 4200/4199, 4914/4913, 250047/250000
Mapping: [⟨3 6 19 30 35 36 29 18], ⟨0 -9 -87 -156 -178 -180 -121 -38]]
Optimal tuning (CTE): ~63/50 = 400.0000, ~351/340 = 55.3295
Optimal ET sequence: 282, 759def, 1041, 1323
Badness (Smith): 0.0269
23-limit
Subgroup: 2.3.5.7.11.13.17.19.23
Comma list: 2058/2057, 2926/2925, 3136/3135, 3381/3380, 3520/3519, 4914/4913, 18515/18513
Mapping: [⟨3 6 19 30 35 36 29 18 31], ⟨0 -9 -87 -156 -178 -180 -121 -38 -126]]
Optimal tuning (CTE): ~63/50 = 400.0000, ~351/340 = 55.3296
Optimal ET sequence: 282, 759def, 1041, 1323
Badness (Smith): 0.0194
29-limit
Subgroup: 2.3.5.7.11.13.17.19.23.29
Comma list: 2058/2057, 2755/2754, 2926/2925, 3136/3135, 3381/3380, 3451/3450, 3520/3519, 4914/4913
Mapping: [⟨3 6 19 30 35 36 29 18 31 19], ⟨0 -9 -87 -156 -178 -180 -121 -38 -126 -32]]
Optimal tuning (CTE): ~63/50 = 400.0000, ~351/340 = 55.3296
Optimal ET sequence: 282, 759def, 1041, 1323
Badness (Smith): 0.0168