Septischismic clan: Difference between revisions

+ heptacot, + garitritonic
m FloraC moved page Garischismic clan to Septischismic clan: Rename (see talk at Septischismic family)
 
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{{Technical data page}}
{{Technical data page}}
The '''garischismic clan''' of [[regular temperament|temperaments]] [[tempering out|tempers out]] the [[garischisma]] ({{monzo|legend=1| 25 -14 0 -1 }}, [[ratio]]: 33554432/33480783), the amount by which the [[Pythagorean comma]] falls short of the [[septimal comma]], thus equating the two.  
The '''septischismic clan''' of [[regular temperament|temperaments]] [[tempering out|tempers out]] the [[septischisma]] ({{monzo|legend=1| 25 -14 0 -1 }}, [[ratio]]: 33 554 432 / 33 480 783), the amount by which the [[Pythagorean comma]] falls short of the [[septimal comma]], thus equating the two.  


== Gary ==
== Gary ==
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==== Subgroup extensions ====
==== Subgroup extensions ====
Gary can be naturally extended into the no-5's 11-limit with good accuracy by equating (64/63)<sup>2</sup> with 33/32, at the cost of doubling the complexity.  
Gary can be naturally extended into the no-5's 11-limit with good accuracy by equating (64/63)<sup>2</sup> with 33/32 at the cost of doubling the complexity, acting as a temperament of [[olympic clan #Olympian|olympian]] which accurately represents the entire [[2.3.7.11 subgroup]] into the chain of fifths. The major third additionally is extremely close to [[19/15]], and is a natural interpretation in extensions with 5 and 19.  


=== 2.3.7.11 subgroup ===
=== 2.3.7.11 subgroup ===
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Optimal tunings:  
Optimal tunings:  
* WE: ~2 = 1199.9631{{c}}, ~3/2 = 702.2077{{c}}
* WE: ~2 = 1199.9631{{c}}, ~3/2 = 702.2077{{c}}
: error map: {{val| -0.037 0.216 -0.139 -0.173 }}
* CWE: ~2 = 1200.0000{{c}}, ~3/2 = 702.2290{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~3/2 = 702.2290{{c}}
: error map: {{val| -0.000 0.274 -0.032 -0.051 }}


{{Optimal ET sequence|legend=0| 12e, 41, 94, 135, 716, 851, 986, 1121, 1256 }}
{{Optimal ET sequence|legend=0| 12e, 41, 94, 135, 716, 851, 986, 1121, 1256 }}
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: ''For the 5-limit version, see [[Schismic–countercommatic equivalence continuum #Cotoneum (5-limit)]].''
: ''For the 5-limit version, see [[Schismic–countercommatic equivalence continuum #Cotoneum (5-limit)]].''


Cotoneum tempers out 10976/10935 ([[hemimage comma]]), and 823543/819200 ([[quince comma]]) in addition to the garischisma. This temperament can be described as {{nowrap| 41 & 217 }}, and is supported by [[176edo|176-]], [[217edo|217-]], and [[258edo]]. 5/4 is found -49 generators away. In terms of chain-of-fifths notation, this is a sextuple-diminished octave, or a perfect fourth minus four generic commas.   
Cotoneum tempers out 10976/10935 ([[hemimage comma]]) and 823543/819200 ([[quince comma]]) in addition to the septischisma. This temperament can be described as {{nowrap| 41 & 217 }}, and is supported by [[176edo|176-]], [[217edo|217-]], and [[258edo]]. 5/4 is found -49 generators away. In terms of chain-of-fifths notation, this is a sextuple-diminished octave, or a perfect fourth minus four generic commas.   


However, cotoneum can be notated like [[cassaschismic]], where 5/4 is conceptualized as an aberschisma-up comma-down major third (C–^↓E), but with the extra equivalence that the generic aberschisma is identical to the [[41-comma]]. In other words, we have C–^↑↑E = C–↓↓E.  
However, cotoneum can be notated like [[cassaschismic]], where 5/4 is conceptualized as an aberschisma-up comma-down major third (C–^↓E), but with the extra equivalence that the generic aberschisma is identical to the [[41-comma]]. In other words, we have C–^↑↑E = C–↓↓E.  
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Like [[#Cotoneum|cotoneum]], newt can be notated in the same way as [[cassaschismic]], but with half-sharps and half-flats and the extra equivalence that two comma steps and an aberschisma step make a half-apotome step. In other words, C–^↑↑E = C–v↓↓E = C–Ed.  
Like [[#Cotoneum|cotoneum]], newt can be notated in the same way as [[cassaschismic]], but with half-sharps and half-flats and the extra equivalence that two comma steps and an aberschisma step make a half-apotome step. In other words, C–^↑↑E = C–v↓↓E = C–Ed.  


Newt continues to be significant as an [[11-limit]] temperament, where it tempers out the [[lehmerisma]] (3025/3024). This extends into a very strong [[13-limit]] temperament and eventually a very strong no-17 [[19-limit]] temperament, a.k.a. ''neonewt''. [[270edo]] and [[311edo]] are obvious tuning choices, but [[581edo]] and especially [[851edo]] are even better.  
Newt continues to be significant as an [[11-limit]] temperament, where it tempers out the lehmerisma ([[3025/3024]]). This extends into a very strong [[13-limit]] temperament and eventually a very strong no-17 [[19-limit]] temperament. [[270edo]] and [[311edo]] are obvious tuning choices, but [[581edo]] and especially [[851edo]] are more accurate.  


[[Subgroup]]: 2.3.5.7
[[Subgroup]]: 2.3.5.7
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Badness (Sintel): 0.571
Badness (Sintel): 0.571


=== 2.3.5.7.11.13.19 subgroup (neonewt) ===
=== 2.3.5.7.11.13.19 subgroup ===
Subgroup: 2.3.5.7.11.13.19
Subgroup: 2.3.5.7.11.13.19


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== Gariwizmic ==
== Gariwizmic ==
Gariwizmic tempers out the [[wizma]] and the garischisma, and may be described as the {{nowrap| 94 & 176 }} temperament. It assumes a [[semioctave]] period and a [[3/2|perfect fifth]] generator that is slightly sharp of just. It finds [[5/4]] 39 fifths away, shifted by a semioctave. It extends extremely well to the 2.3.5.7.11.13.19 subgroup. Notable tunings not appearing in the optimal ET sequence include [[364edo]] and [[634edo]].  
Gariwizmic tempers out the [[wizma]] and the septischisma, and may be described as the {{nowrap| 94 & 176 }} temperament. It assumes a [[semioctave]] period and a [[3/2|perfect fifth]] generator that is slightly sharp of just. It finds [[5/4]] 39 fifths away, shifted by a semioctave. It extends extremely well to the 2.3.5.7.11.13.19 subgroup. Notable tunings not appearing in the optimal ET sequence include [[364edo]] and [[634edo]].  


Gariwizmic was named by [[Eufalesio]] in 2026 as a concatenation of ''gary'' and ''wizmic''.  
Gariwizmic was named by [[Eufalesio]] in 2026 as a concatenation of ''gary'' and ''wizmic''.  
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: ''For the 5-limit version, see [[Miscellaneous 5-limit temperaments #Satin]].''
: ''For the 5-limit version, see [[Miscellaneous 5-limit temperaments #Satin]].''


Satin tempers out the [[rainy comma]] and the [[canousma]] in addition to the garischisma, and may be described as the {{nowrap| 94 & 217 }} temperament. It uses [[~]][[11/10]] as a generator, three of which gives a [[4/3|perfect fourth]], tempering out [[4000/3993]] in the 11-limit and onwards. Its [[ploidacot]] is omega-tricot.  
Satin tempers out the [[rainy comma]] and the [[cathartic comma]] in addition to the septischisma, and may be described as the {{nowrap| 94 & 217 }} temperament. It uses [[~]][[11/10]] as a generator, three of which gives a [[4/3|perfect fourth]], tempering out [[4000/3993]] in the 11-limit and onwards. Its [[ploidacot]] is omega-tricot.  


[[Subgroup]]: 2.3.5.7
[[Subgroup]]: 2.3.5.7
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=== 2.3.5.7.11.13.19 subgroup ===
=== 2.3.5.7.11.13.19 subgroup ===
Subgroup: 2.3.5.7.11.13.17.19
Subgroup: 2.3.5.7.11.13.19


Comma list: 1216/1215, 1716/1715, 2080/2079, 2376/2375, 9633/9625
Comma list: 1216/1215, 1716/1715, 2080/2079, 2376/2375, 9633/9625
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== World calendar ==
== World calendar ==
World calendar tempers out the [[dimcomp comma]] and the garischisma, and can be described as the {{nowrap| 12 & 364 }} temperament. The name derives from a {{w|World Calendar|certain calendar layout}} by the same name.  
World calendar tempers out the [[dimcomp comma]] and the septischisma, and can be described as the {{nowrap| 12 & 364 }} temperament. The name derives from a {{w|World Calendar|certain calendar layout}} by the same name.  


[[Subgroup]]: 2.3.5.7
[[Subgroup]]: 2.3.5.7
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: ''For the 5-limit version, see [[Schismic–commatic equivalence continuum #Heptacot (5-limit)]].''  
: ''For the 5-limit version, see [[Schismic–commatic equivalence continuum #Heptacot (5-limit)]].''  


Heptacot tempers out the [[meter]] and may be described as the {{nowrap| 12 & 311 }} temperament.  
Heptacot tempers out the [[meter]] and may be described as the {{nowrap| 12 & 311 }} temperament, splitting the perfect fifth into seven semitones. It is the natural 7-limit extension of the 5-limit temperament named by [[Tristan Bay]] in 2024. [[311edo]] and [[323edo]] are obvious tuning choices, as well as anything in between such as [[634edo]].
 
Heptacot extends to the 11-limit in the same way as does gary, which best preserves its accuracy, though it should be noted that {{nowrap| 299 & 311 }} and {{nowrap| 323 & 335d }} make for simpler but less accurate alternative extensions.  


[[Subgroup]]: 2.3.5.7
[[Subgroup]]: 2.3.5.7
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[[Badness]] (Sintel): 3.06
[[Badness]] (Sintel): 3.06
=== 11-limit ===
Subgroup: 2.3.5.7.11
Comma list: 19712/19683, 41503/41472, 703125/702464
Mapping: {{mapping| 1 1 6 11 -10 | 0 7 -44 -98 161 }}
: mapping generators: ~2, ~1323/1250
Optimal tunings:
* WE: ~2 = 1199.9981{{c}}, ~1323/1250 = 100.3174{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~1323/1250 = 100.3176{{c}}
{{Optimal ET sequence|legend=0| 12e, 311, 634, 945 }}
Badness (Sintel): 3.21
=== 13-limit ===
Subgroup: 2.3.5.7.11.13
Comma list: 2080/2079, 4096/4095, 19712/19683, 31250/31213
Mapping: {{mapping| 1 1 6 11 -10 -7 | 0 7 -44 -98 161 128 }}
: mapping generators: ~2, ~1323/1250
Optimal tunings:
* WE: ~2 = 1199.9938{{c}}, ~675/637 = 100.3169{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~675/637 = 100.3174{{c}}
{{Optimal ET sequence|legend=0| 12e, 311, 634, 945 }}
Badness (Sintel): 1.89
=== 2.3.5.7.11.13.19 subgroup ===
Subgroup: 2.3.5.7.11.13.19
Comma list: 1216/1215, 1540/1539, 1729/1728, 2080/2079, 31250/31213
Mapping: {{mapping| 1 1 6 11 -10 -7 5 | 0 7 -44 -98 161 128 -9 }}
: mapping generators: ~2, ~1323/1250
Optimal tunings:
* WE: ~2 = 1200.0076{{c}}, ~675/637 = 100.3179{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~675/637 = 100.3173{{c}}
{{Optimal ET sequence|legend=0| 12e, 311, 634, 945 }}
Badness (Sintel): 1.38


== Garitritonic ==
== Garitritonic ==
: ''For the 5-limit version, see [[Schismic–Mercator equivalence continuum #Countritonic]].''  
: ''For the 5-limit version, see [[Schismic–Mercator equivalence continuum #Countritonic]].''  


Garitritonic may be described as the {{nowrap| 53 & 581 }} temperament, splitting the [[24/1|24th harmonic]] into nine tritone generators; its [[ploidacot]] is thus delta-enneacot. [[634edo]] makes for a strong tuning.  
Garitritonic may be described as the {{nowrap| 53 & 581 }} temperament, splitting the [[24/1|24th harmonic]] into nine tritone generators; its [[ploidacot]] is thus delta-enneacot. [[634edo]] makes for a strong 7-limit tuning, though in the higher limits one may prefer sticking to [[581edo]].  


Garitritonic was named by [[Flora Canou]] in 2026 as a contraction of ''gary'' and ''tritonic''.  
Garitritonic was named by [[Flora Canou]] in 2026 as a contraction of ''gary'' and ''tritonic''.  
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[[Badness]] (Sintel): 6.12
[[Badness]] (Sintel): 6.12


=== 11-limit ===
Subgroup: 2.3.5.7.11
Comma list: 19712/19683, 41503/41472, 1953125/1948617
Mapping: {{mapping| 1 -3 -15 67 -102 | 0 9 34 -126 207 }}
Optimal tunings:
* WE: ~2 = 1199.9795{{c}}, ~4375/3072 = 611.3485{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~4375/3072 = 611.3589{{c}}
{{Optimal ET sequence|legend=0| 53, 528, 581, 1796, 2377b }}
Badness (Sintel): 3.60
=== 13-limit ===
Subgroup: 2.3.5.7.11.13
Comma list: 2080/2079, 4096/4095, 19712/19683, 78125/78078
Mapping: {{mapping| 1 -3 -15 67 -102 -34 | 0 9 34 -126 207 74 }}
Optimal tunings:
* WE: ~2 = 1199.9813{{c}}, ~500/351 = 611.3494{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~500/351 = 611.3589{{c}}
{{Optimal ET sequence|legend=0| 53, 528, 581, 1796, 2377b }}
Badness (Sintel): 1.73
=== 2.3.5.7.11.13.19 subgroup ===
Subgroup: 2.3.5.7.11.13.19
Comma list: 1216/1215, 1540/1539, 1729/1728, 2080/2079, 59375/59319
Mapping: {{mapping| 1 -3 -15 67 -102 -34 -36 | 0 9 34 -126 207 74 79 }}
Optimal tunings:
* WE: ~2 = 1199.9884{{c}}, ~500/351 = 611.3531{{c}}
* CWE: ~2 = 1200.0000{{c}}, ~500/351 = 611.3590{{c}}
{{Optimal ET sequence|legend=0| 53, 528, 581, 1796, 2377b }}
Badness (Sintel): 1.22
[[Category:Septischismic clan| ]] <!-- main article -->
[[Category:Temperament clans]]
[[Category:Temperament clans]]
[[Category:Garischismic clan| ]] <!-- main article -->
[[Category:Catalogs of rank-2 temperaments]]
[[Category:Rank 2]]