Catakleismic: Difference between revisions

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The '''catakleismic''' temperament is one of the best extensions of hanson, the 5-limit temperament tempering out the [[kleisma]].  
The '''catakleismic''' temperament is one of the best [[7-limit]] extensions of [[hanson]], the 5-limit temperament tempering out the [[15625/15552|kleisma]] (15625/15552), though it is naturally viewed as a 2.3.5.7.13 temperament, first extending hanson to include the harmonic 13 (called '''cata'''), and then to include 7.  


Catakleismic is naturally viewed as a 2.3.5.7.13 temperament, first extending hanson to include the harmonic 13 (called [[cata]]), and then to include 7. Various reasonable extensions exist for harmonic 11. These are ''undecimal catakleismic'', mapping 11 to -21 generator steps, ''cataclysmic'', to +32 steps, ''catalytic'', to +51 steps, and cataleptic, to -2 steps.  
In addition to the kleisma, catakleismic tempers the [[marvel comma]] (225/224), equating the interval of [[25/24]] (which is already equated to [[26/25]] and [[27/26]] in the 2.3.5.13 subgroup interpretation of kleismic) to [[28/27]]. This forces a flatter interpretation of 25/24, which is found 4 [[6/5]] generators up, and therefore a flatter interpretation of the generator, which confines reasonable catakleismic tunings to the portion of the kleismic tuning spectrum. between [[19edo]] and [[34edo]]; in fact, catakleismic is the 19 & 34d temperament in the 7-limit. It can additionally be defined by tempering out the marvel comma and the [[ragisma]] (4375/4374), which finds [[7/6]] at the square of [[27/25]], which is found at the square of 25/24. Therefore the 7th harmonic appears 22 generators up the chain.
 
Various reasonable extensions exist for harmonic 11. These are ''undecimal catakleismic'', mapping 11 to -21 generator steps, ''cataclysmic'', to +32 steps, ''catalytic'', to +51 steps, and cataleptic, to -2 steps.  


See [[Kleismic family #Catakleismic]] for technical data.
See [[Kleismic family #Catakleismic]] for technical data.
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== Tuning spectrum ==
== Tuning spectrum ==
The tuning spectrum, presumably, assumes undecimal catakleismic, while neglecting to specify the details of that specific extension.
{| class="wikitable center-all left-4"
{| class="wikitable center-all left-4"
|-
|-
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|  
|  
|-
|-
| 5\19
| [[19edo|5\19]]
|  
|  
| 315.789
| 315.789
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|  
|  
|-
|-
| 19\72
| [[72edo|19\72]]
|  
|  
| 316.667
| 316.667
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| 11-odd-limit minimax
| 11-odd-limit minimax
|-
|-
| 52\197
| [[197edo|52\197]]
|  
|  
| 316.751
| 316.751
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| 10/9
| 10/9
| 316.799
| 316.799
|  
| 1/7-kleisma
|-
|-
| 33\125
| [[125edo|33\125]]
|  
|  
| 316.800
| 316.800
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|  
|  
|-
|-
| 14\53
| [[53edo|14\53]]
|  
|  
| 316.981
| 316.981
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| 4/3
| 4/3
| 316.993
| 316.993
| 5-odd-limit minimax
| 5-odd-limit minimax, 1/6-kleisma
|-
|-
|  
|  
| 16/15
| 16/15
| 317.115
| 317.115
|  
| 2/11-kleisma
|-
|-
|  
|  
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|  
|  
|-
|-
| 23\87
| [[87edo|23\87]]
|  
|  
| 317.241
| 317.241
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| 5/4
| 5/4
| 317.263
| 317.263
|  
| 1/5-kleisma
|-
|-
|  
|  
Line 251: Line 254:
|  
|  
|-
|-
| 9\34
| [[34edo|9\34]]
|  
|  
| 317.647
| 317.647

Revision as of 21:18, 21 September 2024

The catakleismic temperament is one of the best 7-limit extensions of hanson, the 5-limit temperament tempering out the kleisma (15625/15552), though it is naturally viewed as a 2.3.5.7.13 temperament, first extending hanson to include the harmonic 13 (called cata), and then to include 7.

In addition to the kleisma, catakleismic tempers the marvel comma (225/224), equating the interval of 25/24 (which is already equated to 26/25 and 27/26 in the 2.3.5.13 subgroup interpretation of kleismic) to 28/27. This forces a flatter interpretation of 25/24, which is found 4 6/5 generators up, and therefore a flatter interpretation of the generator, which confines reasonable catakleismic tunings to the portion of the kleismic tuning spectrum. between 19edo and 34edo; in fact, catakleismic is the 19 & 34d temperament in the 7-limit. It can additionally be defined by tempering out the marvel comma and the ragisma (4375/4374), which finds 7/6 at the square of 27/25, which is found at the square of 25/24. Therefore the 7th harmonic appears 22 generators up the chain.

Various reasonable extensions exist for harmonic 11. These are undecimal catakleismic, mapping 11 to -21 generator steps, cataclysmic, to +32 steps, catalytic, to +51 steps, and cataleptic, to -2 steps.

See Kleismic family #Catakleismic for technical data.

Interval chain

# Cents* Approximate Ratios
0 0.0 1/1
1 316.7 6/5
2 633.5 13/9
3 950.2 26/15
4 67.0 25/24, 26/25, 27/26, 28/27
5 383.7 5/4
6 700.4 3/2
7 1017.2 9/5
8 133.9 13/12, 14/13, 27/25
9 450.7 13/10
10 767.4 14/9
11 1084.1 15/8, 28/15
12 200.9 9/8
13 517.6 27/20
14 834.4 13/8, 21/13
15 1151.1 35/18
16 267.9 7/6
17 584.6 7/5
18 901.3 27/16
19 18.1 81/80

* in 2.3.5.7.13 POTE tuning

Chords

Main article: Chords of catakleismic and Chords of tridecimal catakleismic

Scales

Tuning spectrum

The tuning spectrum, presumably, assumes undecimal catakleismic, while neglecting to specify the details of that specific extension.

EDO
generator
eigenmonzo
(unchanged-interval)
generator
(¢)
comments
6/5 315.641
5\19 315.789 Lower bound of 9-odd-limit diamond monotone
14/13 316.037
15/14 316.414
9/7 316.492
11/8 316.604
7/5 316.618
19\72 316.667
7/6 316.679
14/11 316.686
12/11 316.690
11/10 316.731
11/9 316.745 11-odd-limit minimax
52\197 316.751
8/7 316.765 7-, 9-, 13- and 15-odd-limit minimax
15/11 316.780
10/9 316.799 1/7-kleisma
33\125 316.800
13/11 316.835
14\53 316.981
4/3 316.993 5-odd-limit minimax, 1/6-kleisma
16/15 317.115 2/11-kleisma
13/10 317.135
16/13 317.181
23\87 317.241
5/4 317.263 1/5-kleisma
13/12 317.322
15/13 317.420
9\34 317.647 Upper bound of 9-odd-limit diamond monotone
18/13 318.309