Cathartic temperaments: Difference between revisions
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This page collects [[rank-2 temperament|rank-2]] '''cathartic temperaments''', which [[tempering out|temper out]] the [[cathartic comma]] ({{monzo|legend=1| 4 -14 3 4 }}, [[ratio]]: 4802000/4782969). For the family of [[rank-3 temperament]]s, see [[Cathartic family]]. | |||
Temperaments discussed elsewhere are: | Temperaments discussed elsewhere are: | ||
* [[Godzilla]] | * [[Godzilla]] (+49/48 or 81/80) → [[Semaphoresmic clan #Godzilla|Semaphoresmic clan]] | ||
* ''[[ | * ''[[Satin]]'' (+2100875/2097152) → [[Septischismic clan #Satin|Septischismic clan]] | ||
* ''[[ | * ''[[Kleischismic]]'' (+32805/32768) → [[Schismatic family #Kleischismic|Schismatic family]] | ||
* ''[[ | * ''[[Pentaorwell]]'' (+1728/1715) → [[Orwellismic temperaments #Pentaorwell|Orwellismic temperaments]] | ||
* [[Parakleismic]] | * ''[[Septiquarter]]'' (+5120/5103) → [[Aberschismic temperaments #Septiquarter|Aberschismic temperaments]] | ||
* ''[[ | * ''[[Betic]]'' (+225/224) → [[Sycamore family #Betic|Sycamore family]] | ||
* ''[[ | * [[Parakleismic]] (+3136/3125 or 4375/4374) → [[Parakleismic family #Septimal parakleismic|Parakleismic family]] | ||
* ''[[ | * ''[[Turkey]]'' (+5250987/5242880) → [[Vulture family #Turkey|Vulture family]] | ||
* ''[[ | * ''[[Kaboom]]'' (+65625/65536) → [[Vavoom family #Kaboom|Vavoom family]] | ||
* ''[[Semiluna]]'' | * ''[[Amicable]]'' (+2401/2400) → [[Amity family #Amicable|Amity family]] | ||
* ''[[Marthirds]]'' (+15625/15552) → [[Kleismic family #Marthirds|Kleismic family]] | |||
* ''[[Semiluna]]'' (+95703125/95551488) → [[Luna family #Semiluna|Luna family]] | |||
* ''[[Quartiquart]]'' (+390625/388962) → [[Quartonic family #Quartiquart|Quartonic family]] | |||
Considered below are | Considered below are hemiquindromeda and superlimmal, in the order of increasing [[badness]]. | ||
== | == Hemiquindromeda == | ||
: ''For the 5-limit version, see [[Schismic–commatic equivalence continuum #Quindromeda]]''. | |||
Named by [[Xenllium]] in 2021, hemiquindromeda tempers out the [[decovulture comma]]. It is essentially a 24-form, and may be described as the 193 & 217 temperament. It splits the [[4/3|perfect fourth]] in ten [[~]][[36/35]] quartertone generators, thus having a [[ploidacot]] signature of omega-decacot. Three generator steps reach an accurate ~[[12/11]], from which we can derive an 11-limit extension where [[14700/14641]], [[16384/16335]], and [[19712/19683]] are tempered out, and a 13-limit extension that follows from 67108864/66976875 = ([[676/675]])⋅([[4096/4095]])<sup>2</sup>. | |||
[[ | [[Subgroup]]: 2.3.5.7 | ||
[[ | [[Comma list]]: 4802000/4782969, 67108864/66976875 | ||
{{Mapping|legend=1| 1 2 0 6| 0 -10 56 -77 }} | |||
: mapping generators: ~2, ~36/35 | |||
{{ | [[Optimal tuning]]s: | ||
* [[WE]]: ~2 = 1199.9255{{c}}, ~36/35 = 49.7534{{c}} | |||
: [[error map]]: {{val| -0.075 +0.362 -0.126 -0.281 }} | |||
* [[CWE]]: ~2 = 1200.0000{{c}}, ~36/35 = 49.7566{{c}} | |||
: error map: {{val| 0.000 +0.479 +0.053 -0.080 }} | |||
{{Optimal ET sequence|legend=1| 24, 169d, 193, 217, 410 }} | |||
[[Badness]] (Sintel): 6.19 | |||
[[Badness]]: | |||
=== 11-limit === | === 11-limit === | ||
Subgroup: 2.3.5.7.11 | Subgroup: 2.3.5.7.11 | ||
Comma list: | Comma list: 14700/14641, 16384/16335, 19712/19683 | ||
{{Mapping|legend=0| 1 2 0 6 4 |0 -10 56 -77 -13 }} | |||
Optimal tunings: | |||
* WE: ~2 = 1199.8344{{c}}, ~36/35 = 49.7571{{c}} | |||
* CWE: ~2 = 1200.0000{{c}}, ~36/35 = 49.7499{{c}} | |||
{{Optimal ET sequence|legend=0| 24, 169d, 193, 217, 410e }} | |||
Badness: | Badness (Sintel): 3.08 | ||
=== 13-limit === | === 13-limit === | ||
Subgroup: 2.3.5.7.11.13 | Subgroup: 2.3.5.7.11.13 | ||
Comma list: | Comma list: 364/363, 676/675, 4096/4095, 19712/19683 | ||
{{Mapping|legend=0| 1 2 0 6 4 2 | 0 -10 56 -77 -13 41 }} | |||
Optimal tunings: | |||
* WE: ~2 = 1199.8852{{c}}, ~36/35 = 49.7543{{c}} | |||
* CWE: ~2 = 1200.0000{{c}}, ~36/35 = 49.7591{{c}} | |||
{{Optimal ET sequence|legend=0| 24, 169d, 193, 217, 410e }} | |||
Badness: | Badness (Sintel): 2.01 | ||
=== 17-limit === | === 17-limit === | ||
Subgroup: 2.3.5.7.11.13.17 | Subgroup: 2.3.5.7.11.13.17 | ||
Comma list: 595/594, | Comma list: 364/363, 595/594, 676/675, 1156/1155, 4096/4095 | ||
{{Mapping|legend=0| 1 2 0 6 4 2 5 | 0 -10 56 -77 -13 41 -22 }} | |||
Optimal tunings: | |||
* WE: ~2 = 1199.8894{{c}}, ~34/33 = 49.7544{{c}} | |||
* CWE: ~2 = 1200.0000{{c}}, ~34/33 = 49.7591{{c}} | |||
{{Optimal ET sequence|legend=0| 24, 169d, 193, 217, 410e, 627e }} | |||
Badness: | Badness (Sintel): 1.43 | ||
=== 19-limit === | === 19-limit === | ||
Subgroup: 2.3.5.7.11.13.17.19 | Subgroup: 2.3.5.7.11.13.17.19 | ||
Comma list: 595/594, | Comma list: 364/363, 595/594, 676/675, 1156/1155, 1216/1215, 1729/1728 | ||
{{Mapping|legend=0| 1 2 0 6 4 2 5 4 | 0 -10 56 -77 -13 41 -22 6 }} | |||
Optimal tunings: | |||
* WE: ~2 = 1199.8724{{c}}, ~34/33 = 49.7535{{c}} | |||
* CWE: ~2 = 1200.0000{{c}}, ~34/33 = 49.7589{{c}} | |||
{{Optimal ET sequence|legend=0| 24, 169d, 193, 217, 410e }} | |||
Badness: | Badness (Sintel): 1.18 | ||
== | == Superlimmal == | ||
Superlimmal is essentially an 80-form, and may be described as the {{nowrap| 80 & 311 }} temperament. It uses an ever slightly sharpened [[27/25|large limma]] as the generator, nine exceed the octave by [[126/125]]. Note that in the data that follow, the generator is its [[octave complement]], [[~]][[50/27]], so that 57 of them [[octave reduction|octave reduced]] make the [[3/2|perfect fifth]]. | |||
Superlimmal gets all the primes up to [[29/1|29]] reasonably covered, but is acceptable just as a 13-limit microtemperament, given a relatively simple [[comma basis]]. It can also be extended to include prime [[37/1|37]] by mapping it to 87 generator steps, tempering out ([[27/25]])/([[40/37]]) = [[1000/999]]. Since 40/37 is the mediant of [[27/25]] and [[13/12]], this extension further consolidates the sharpened limma. | |||
[[Subgroup]]: 2.3.5.7 | |||
[[Comma list]]: 4802000/4782969, 52734375/52706752 | [[Comma list]]: 4802000/4782969, 52734375/52706752 | ||
{{Mapping|legend=1| 1 -49 -74 -117 | 0 57 86 135 }} | |||
: mapping generators: ~2, ~50/27 | |||
[[ | [[Optimal tuning]]s: | ||
* [[WE]]: ~2 = 1199.9770{{c}}, ~50/27 = 1064.9332{{c}} | |||
: [[error map]]: {{val| -0.023 +0.365 -0.356 -0.152 }} | |||
* [[CWE]]: ~2 = 1200.0000{{c}}, ~50/27 = 1064.9533{{c}} | |||
: error map: {{val| 0.000 +0.386 -0.326 -0.124 }} | |||
{{ | {{Optimal ET sequence|legend=1| 80, 231, 311, 1324b, 1635b }} | ||
[[Badness]]: | [[Badness]] (Sintel): 6.39 | ||
=== 11-limit === | === 11-limit === | ||
| Line 131: | Line 128: | ||
Comma list: 3025/3024, 4000/3993, 1479016/1476225 | Comma list: 3025/3024, 4000/3993, 1479016/1476225 | ||
{{Mapping|legend=0| 1 -49 -74 -117 -56 | 0 57 86 135 67 }} | |||
Optimal tuning: | |||
* WE: ~2 = 1199.9235{{c}}, ~50/27 = 1064.8866{{c}} | |||
* CWE: ~2 = 1200.0000{{c}}, ~50/27 = 1064.9536{{c}} | |||
{{Optimal ET sequence|legend=0| 80, 231, 311, 1013e, 1324be }} | |||
Badness: | Badness (Sintel): 2.01 | ||
=== 13-limit === | === 13-limit === | ||
| Line 144: | Line 143: | ||
Comma list: 3025/3024, 4000/3993, 4225/4224, 4459/4455 | Comma list: 3025/3024, 4000/3993, 4225/4224, 4459/4455 | ||
{{Mapping|legend=0| 1 -49 -74 -117 -56 25 | 0 57 86 135 67 -24 }} | |||
Optimal tuning: | |||
* WE: ~2 = 1199.8904{{c}}, ~50/27 = 1064.8582{{c}} | |||
* CWE: ~2 = 1200.0000{{c}}, ~50/27 = 1064.9547{{c}} | |||
{{Optimal ET sequence|legend=0| 80, 231, 311, 702, 1013e }} | |||
Badness: | Badness (Sintel): 1.61 | ||
=== 17-limit === | === 17-limit === | ||
| Line 157: | Line 158: | ||
Comma list: 595/594, 1275/1274, 2500/2499, 3025/3024, 4225/4224 | Comma list: 595/594, 1275/1274, 2500/2499, 3025/3024, 4225/4224 | ||
{{Mapping|legend=0| 1 -49 -74 -117 -56 25 -11 | 0 57 86 135 67 -24 17 }} | |||
Optimal tuning: | |||
* WE: ~2 = 1199.9634{{c}}, ~50/27 = 1064.9213{{c}} | |||
* CWE: ~2 = 1200.0000{{c}}, ~50/27 = 1064.9536{{c}} | |||
{{Optimal ET sequence|legend=0| 80, 231, 311 }} | |||
Badness: | Badness (Sintel): 1.53 | ||
=== 19-limit === | === 19-limit === | ||
| Line 170: | Line 173: | ||
Comma list: 595/594, 969/968, 1275/1274, 1445/1444, 1729/1728, 2500/2499 | Comma list: 595/594, 969/968, 1275/1274, 1445/1444, 1729/1728, 2500/2499 | ||
{{Mapping|legend=0| 1 -49 -74 -117 -56 25 -11 -49 | 0 57 86 135 67 -24 17 60 }} | |||
Optimal tuning: | |||
* WE: ~2 = 1199.9800{{c}}, ~50/27 = 1064.9358{{c}} | |||
* CWE: ~2 = 1200.0000{{c}}, ~50/27 = 1064.9535{{c}} | |||
{{Optimal ET sequence|legend=0| 80, 231, 311 }} | |||
Badness: | Badness (Sintel): 1.24 | ||
=== 23-limit === | === 23-limit === | ||
| Line 183: | Line 188: | ||
Comma list: 595/594, 760/759, 969/968, 1105/1104, 1275/1274, 1445/1444, 1496/1495 | Comma list: 595/594, 760/759, 969/968, 1105/1104, 1275/1274, 1445/1444, 1496/1495 | ||
{{Mapping|legend=0| 1 -49 -74 -117 -56 25 -11 -49 -15 | 0 57 86 135 67 -24 17 60 22 }} | |||
Optimal tuning: | |||
* WE: ~2 = 1199.9546{{c}}, ~50/27 = 1064.9138{{c}} | |||
* CWE: ~2 = 1200.0000{{c}}, ~50/27 = 1064.9539{{c}} | |||
{{Optimal ET sequence|legend=0| 80, 231, 311 }} | |||
Badness: | Badness (Sintel): 1.16 | ||
=== 29-limit === | === 29-limit === | ||
| Line 196: | Line 203: | ||
Comma list: 595/594, 760/759, 784/783, 969/968, 1045/1044, 1105/1104, 1275/1274, 1496/1495 | Comma list: 595/594, 760/759, 784/783, 969/968, 1045/1044, 1105/1104, 1275/1274, 1496/1495 | ||
{{Mapping|legend=0| 1 -49 -74 -117 -56 25 -11 -49 -15 -83 | 0 57 86 135 67 -24 17 60 22 99 }} | |||
Optimal tuning: | |||
* WE: ~2 = 1199.9430{{c}}, ~50/27 = 1064.9035{{c}} | |||
* CWE: ~2 = 1200.0000{{c}}, ~50/27 = 1064.9538{{c}} | |||
{{Optimal ET sequence|legend=0| 80, 231, 311 }} | |||
Badness: | Badness (Sintel): 1.09 | ||
[[Category: | [[Category:Cathartic temperaments| ]] <!-- main article --> | ||
[[Category: | [[Category:Cathartic| ]] <!-- key article --> | ||
[[Category:Temperament collections]] | |||
[[Category: | [[Category:Catalogs of rank-2 temperaments]] | ||