Ripple family: Difference between revisions

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== Ripple ==
== Ripple ==
The generator of ripple is a semitone representing 27/25, five of which give 4/3, and eight of which give 8/5. This means that 27/25 is severely flattened, so that the characteristic damage is a strongly flat-tempered [[4/3|fourth]] reached at 5 semitones. Interestingly, in optimal tunings, the major third of ~5/4 does not tend to be damaged much sharpwards as one might expect from the equivalence, and is in practice often even flat, so that prime 3 takes on practically the whole damage of the 5-limit equivalence, for which it has the advantage of being the simplest so still having a good chance at psychoacoustic viability. As a result though, the mapping of ~9/8 is often inconsistent, so that ripple can in practice be thought of as a [[dual-fifth temperament]] unless you use tunings close to [[12edo]].
The generator of ripple is a semitone representing 27/25, five of which give 4/3, and eight of which give 8/5. The [[ploidacot]] of ripple is omega-pentacot. This means that 27/25 is severely flattened, so that the characteristic damage is a strongly flat-tempered fourth reached at 5 semitones. Interestingly, in optimal tunings, the major third of ~5/4 does not tend to be damaged much sharpwards as one might expect from the equivalence, and is in practice sometimes even flat, so that prime 3 takes on practically the whole damage of the 5-limit equivalence, for which it has the advantage of being the simplest so still having a good chance at psychoacoustic viability. As a result though, the mapping of ~9/8 is often very flat, so that ripple can in practice be thought of as a [[dual-fifth temperament]] unless you use tunings close to [[12edo]].


Reasonable [[patent val]] tunings not appearing in the optimal ET sequence are [[35edo]] and [[47edo]].
Reasonable [[patent val]] tunings not appearing in the optimal ET sequence are [[35edo]] and [[47edo]].
Line 16: Line 16:


[[Optimal tuning]]s:  
[[Optimal tuning]]s:  
* [[CTE]]: ~2 = 1200.000, ~27/25 = 100.752
* [[WE]]: ~2 = 1200.2636{{c}}, ~27/25 = 100.8602{{c}}
: [[error map]]: {{val| 0.000 -5.717 +7.668 }}
: [[error map]]: {{val| +0.264 -5.729 +7.596 }}
* [[CWE]]: ~2 = 1200.000, ~27/25 = 100.798
* [[CWE]]: ~2 = 1200.0000{{c}}, ~27/25 = 100.7982{{c}}
: [[error map]]: {{val| 0.000 -5.946 +7.300 }}
: [[error map]]: {{val| 0.000 -5.946 +7.300 }}
* [[POTE]]: ~2 = 1200.000, ~27/25 = 100.838
: error map: {{val| 0.000 -6.145 +6.982 }}


[[Tuning ranges]]:  
[[Tuning ranges]]:  
Line 29: Line 27:
{{Optimal ET sequence|legend=1| 11c, 12, 71b, 83b }}
{{Optimal ET sequence|legend=1| 11c, 12, 71b, 83b }}


[[Badness]]:  
[[Badness]] (Sintel): 3.26
* Smith 0.139
 
* Dirichlet: 3.26
=== Overview to extensions ===
The second comma of the comma list defines which 7-limit family member we are looking at:
* Septimal ripple adds [[126/125]];
* Rip adds [[36/35]];
 
Both use the same nominal generator as ripple.  
 
For weak extensions, we have hemiripple and cohemiripple. Hemiripple adds [[49/48]], spliting the semitone generator in two. Cohemiripple adds [[245/243]], spliting the [[octave complement]] of the semitone generator in two.  


== Septimal ripple ==
== Septimal ripple ==
{{See also| Dual-fifth temperaments }}
{{See also| Dual-fifth temperaments }}
Septimal ripple interprets the generator as a very flat ~15/14, so that 3 and 5 are flat and 7 is sharp; of these, 3 is the most damaged, but is also the simplest, so is still viable as an approximation. Due to the sharp 7 and flatter 3, ~21/16 can be fairly in-tune, acting as the alternate fourth in a dual-fourth interpretation, so that the inconsistent but more accurate ~16/9 is reached as ~(21/16)⋅(4/3) = ~7/4, though this assumes you are putting the most damage on 3 as to get larger primes more in tune. This has another advantage, specific to the 11-limit: this accurate but inconsistent ~9/8 (which is usually just to slightly sharp) can find the neutral third ~11/9 with reasonable accuracy.
Septimal ripple interprets the generator as a very flat ~15/14, so that 3 and 5 are flat and 7 is sharp; of these, 3 is the most damaged, but is also the simplest, so is still viable as an approximation. Due to the sharp 7 and flatter 3, ~21/16 can be fairly in-tune, acting as the alternate fourth in a dual-fourth interpretation, so that the inconsistent but more accurate ~16/9 is reached as ~(21/16)⋅(4/3) = ~7/4, though this assumes you are putting the most damage on 3 as to get larger primes more in tune. This has another advantage, specific to the 11-limit: this accurate but inconsistent ~9/8 (which is usually just to slightly sharp) can find the neutral third ~11/9 with reasonable accuracy.


Line 45: Line 51:
{{Mapping|legend=1| 1 2 3 4 | 0 -5 -8 -14 }}
{{Mapping|legend=1| 1 2 3 4 | 0 -5 -8 -14 }}


[[Optimal tuning]]s:
[[Optimal tuning]]s:  
* [[CTE]]: ~2 = 1200.000, ~15/14 = 101.538
* [[WE]]: ~2 = 1201.7546{{c}}, ~15/14 = 102.1309{{c}}
: [[error map]]: {{val| 0 -9.643 +1.385 +9.647 }}
: error map: {{val| +1.755 -9.100 +1.903 +8.360 }}
* [[CWE]]: ~2 = 1200.000, ~15/14 = 101.777
* [[CWE]]: ~2 = 1200.0000{{c}}, ~15/14 = 101.7772{{c}}
: error map: {{val| 0 -10.841 -0.531 +6.294 }}
: error map: {{val| 0.000 -10.841 -0.531 +6.294 }}
* [[CEE]]: ~2 = 1200.000, ~15/14 = 101.881
: error map: {{val| 0 -11.361 -1.364 +4.837 }}


{{Optimal ET sequence|legend=1| 11cd, 12, 35, 47 }}
{{Optimal ET sequence|legend=1| 11cd, 12, 35, 47 }}


[[Badness]]:
[[Badness]] (Sintel): 1.52
* Smith: 0.0601
* Dirichlet: 1.52


=== 11-limit ===
=== 11-limit ===
Line 69: Line 71:


Optimal tunings:
Optimal tunings:
* CTE: ~2 = 1200.000, ~15/14 = 101.538
* WE: ~2 = 1202.5973{{c}}, ~15/14 = 102.7900{{c}}
: error map: {{val| 0 -11.785 -2.041 +3.651 +13.296 }}
: error map: {{val| +2.597 -10.710 -0.842 +2.504 +11.449 }}
* CWE: ~2 = 1200.000, ~15/14 = 102.297
* CWE: ~2 = 1200.0000{{c}}, ~15/14 = 102.2972{{c}}
: error map: {{val| 0 -13.441 -4.691 -0.986 +7.333 }}
: error map: {{val| 0.000 -13.441 -4.691 -0.986 +7.333 }}
* CEE: ~2 = 1200.000, ~15/14 = 102.319
: error map: {{val| 0 -13.551 -4.868 -1.296 +6.935 }}


{{Optimal ET sequence|legend=0| 11cdee, 12, 23de, 35 }}
{{Optimal ET sequence|legend=0| 11cdee, 12, 23de, 35 }}


Badness:
Badness (Sintel): 1.33
* Smith: 0.0403
* Dirichlet: 1.33


== Rip ==
== Rip ==
Line 92: Line 90:


[[Optimal tuning]]s:  
[[Optimal tuning]]s:  
* [[CTE]]: ~2 = 1200.000, ~21/20 = 101.089
* [[WE]]: ~2 = 1195.0347{{c}}, ~21/20 = 99.0710{{c}}
: [[error map]]: {{val| 0.000 -7.402 +4.970 +28.995 }}
: error map: {{val| -4.965 -7.240 +6.223 +18.136 }}
* [[CWE]]: ~2 = 1200.000, ~21/20 = 100.109
* [[CWE]]: ~2 = 1200.0000{{c}}, ~21/20 = 100.1093{{c}}
: error map: {{val| 0.000 -2.501 +12.812 +30.956 }}
: error map: {{val| 0.000 -2.501 +12.812 +30.956 }}
* [[POTE]]: ~2 = 1200.000, ~21/20 = 99.483
: error map: {{val| 0.000 +0.632 +17.825 +32.209 }}


{{Optimal ET sequence|legend=1| 11c, 12 }}
{{Optimal ET sequence|legend=1| 11c, 12 }}


[[Badness]] (Smith): 0.0597
[[Badness]] (Sintel): 1.51


=== 11-limit ===
=== 11-limit ===
Line 111: Line 107:


Optimal tunings:  
Optimal tunings:  
* CTE: ~2 = 1200.000, ~21/20 = 101.923
* WE: ~2 = 1192.7877{{c}}, ~21/20 = 98.7876{{c}}
* CWE: ~2 = 1200.000, ~21/20 = 100.320
* CWE: ~2 = 1200.0000{{c}}, ~21/20 = 100.3202{{c}}
* POTE: ~2 = 1200.000, ~21/20 = 99.385


{{Optimal ET sequence|legend=0| 11c, 12 }}
{{Optimal ET sequence|legend=0| 11c, 12 }}


Badness (Smith): 0.0388
Badness (Sintel): 1.28


=== 13-limit ===
=== 13-limit ===
Line 127: Line 122:


Optimal tunings:  
Optimal tunings:  
* CTE: ~2 = 1200.000, ~21/20 = 102.376
* WE: ~2 = 1189.8521{{c}}, ~21/20 = 97.7384{{c}}
* CWE: ~2 = 1200.000, ~21/20 = 99.762
* CWE: ~2 = 1200.0000{{c}}, ~21/20 = 99.7618{{c}}
* POTE: ~2 = 1200.000, ~21/20 = 98.572


{{Optimal ET sequence|legend=0| 11c, 12f, 37ccddeeeeffff }}
{{Optimal ET sequence|legend=0| 11c, 12f, 37ccddeeeeffff }}


Badness (Smith): 0.0316
Badness (Sintel): 1.31


== Hemiripple ==
== Hemiripple ==
Hemiripple tempers out 49/48 and splits the semitone generator in two for ~36/35. Its ploidacot is omega-decacot.
[[Subgroup]]: 2.3.5.7
[[Subgroup]]: 2.3.5.7


Line 141: Line 137:


{{Mapping|legend=1| 1 2 3 3 | 0 -10 -16 -5 }}
{{Mapping|legend=1| 1 2 3 3 | 0 -10 -16 -5 }}
: mapping generators: ~2, ~36/35


[[Optimal tuning]]s:  
[[Optimal tuning]]s:  
* [[CTE]]: ~2 = 1200.000, ~36/35 = 50.231
* [[WE]]: ~2 = 1203.5561{{c}}, ~36/35 = 50.9765{{c}}
: [[error map]]: {{val| 0.000 -4.264 +9.991 -19.981 }}
: error map: {{val| +3.556 -4.608 +8.730 -13.040 }}
* [[CWE]]: ~2 = 1200.000, ~36/35 = 50.593
* [[CWE]]: ~2 = 1200.0000{{c}}, ~36/35 = 50.5928{{c}}
: error map: {{val| 0.000 -7.883 +4.201 -21.790 }}
: error map: {{val| 0.000 -7.883 +4.201 -21.790 }}
* [[POTE]]: ~2 = 1200.000, ~36/35 = 50.826
: error map: {{val| 0.000 -10.214 +0.472 -22.956 }}


{{Optimal ET sequence|legend=1| 23d, 24, 47d }}
{{Optimal ET sequence|legend=1| 23d, 24, 47d }}


[[Badness]] (Smith): 0.175
[[Badness]] (Sintel): 4.43


=== 11-limit ===
=== 11-limit ===
Line 162: Line 158:


Optimal tunings:  
Optimal tunings:  
* CTE: ~2 = 1200.000, ~36/35 = 50.186
* WE: ~2 = 1203.5344{{c}}, ~36/35 = 50.9757{{c}}
* CWE: ~2 = 1200.000, ~36/35 = 50.587
* CWE: ~2 = 1200.0000{{c}}, ~36/35 = 50.5870{{c}}
* POTE: ~2 = 1200.000, ~36/35 = 50.826


{{Optimal ET sequence|legend=0| 23de, 24, 47de }}
{{Optimal ET sequence|legend=0| 23de, 24, 47de }}


Badness (Smith): 0.0668
Badness (Sintel): 2.21


=== 13-limit ===
=== 13-limit ===
Line 178: Line 173:


Optimal tunings:  
Optimal tunings:  
* CTE: ~2 = 1200.000, ~36/35 = 50.225
* WE: ~2 = 1202.0936{{c}}, ~36/35 = 50.7232{{c}}
* CWE: ~2 = 1200.000, ~36/35 = 50.505
* CWE: ~2 = 1200.0000{{c}}, ~36/35 = 50.5048{{c}}
* POTE: ~2 = 1200.000, ~36/35 = 50.635


{{Optimal ET sequence|legend=0| 23de, 24 }}
{{Optimal ET sequence|legend=0| 23de, 24 }}


Badness (Smith): 0.0466
Badness (Sintel): 1.93


== Cohemiripple ==
== Cohemiripple ==
{{See also| Sensamagic clan }}
{{See also| Sensamagic clan }}
Cohemiripple tempers out 245/243 and splits the octave complement of the semitone generator of ripple in two, each of which is used for ~7/5. Its ploidacot is delta-decacot.


[[Subgroup]]: 2.3.5.7
[[Subgroup]]: 2.3.5.7
Line 193: Line 189:
[[Comma list]]: 245/243, 1323/1250
[[Comma list]]: 245/243, 1323/1250


{{Mapping|legend=1| 1 7 11 12 | 0 -10 -16 -17 }}
{{Mapping|legend=1| 1 -3 -5 -5 | 0 10 16 17 }}
 
: mapping generators: ~2, ~7/5


[[Optimal tuning]]s:  
[[Optimal tuning]]s:  
* [[CTE]]: ~2 = 1200.000, ~7/5 = 550.063
* [[WE]]: ~2 = 1200.6977{{c}}, ~7/5 = 550.2638{{c}}
: [[error map]]: {{val| 0.000 -1.328 +14.690 -17.760 }}
: error map: {{val| +0.698 -1.410 +14.418 -17.830 }}
* [[CWE]]: ~2 = 1200.000, ~7/5 = 549.998
* [[CWE]]: ~2 = 1200.0000{{c}}, ~7/5 = 549.9979{{c}}
: error map: {{val| 0.000 -1.976 +13.653 -18.861 }}
: error map: {{val| 0.000 -1.976 +13.653 -18.861 }}
* [[POTE]]: ~2 = 1200.000, ~7/5 = 549.944
: error map: {{val| 0.000 -2.515 +12.791 -19.777 }}


{{Optimal ET sequence|legend=1| 11cd, 13cd, 24 }}
{{Optimal ET sequence|legend=1| 11cd, 13cd, 24 }}


[[Badness]] (Smith): 0.190
[[Badness]] (Sintel): 4.81


=== 11-limit ===
=== 11-limit ===
Line 212: Line 208:
Comma list: 77/75, 243/242, 245/242
Comma list: 77/75, 243/242, 245/242


Mapping: {{mapping| 1 7 11 12 17 | 0 -10 -16 -17 -25 }}
Mapping: {{mapping| 1 -3 -5 -5 -8 | 0 10 16 17 25 }}


Optimal tunings:  
Optimal tunings:  
* CTE: ~2 = 1200.000, ~7/5 = 550.060
* WE: ~2 = 1200.6959{{c}}, ~7/5 = 550.2641{{c}}
* CWE: ~2 = 1200.000, ~7/5 = 549.997
* CWE: ~2 = 1200.0000{{c}}, ~7/5 = 549.9969{{c}}
* POTE: ~2 = 1200.000, ~7/5 = 549.945


{{Optimal ET sequence|legend=0| 11cdee, 13cdee, 24 }}
{{Optimal ET sequence|legend=0| 11cdee, 13cdee, 24 }}


Badness (Smith): 0.0827
Badness (Sintel): 2.73


=== 13-limit ===
=== 13-limit ===
Line 228: Line 223:
Comma list: 66/65, 77/75, 147/143, 243/242
Comma list: 66/65, 77/75, 147/143, 243/242


Mapping: {{mapping| 1 7 11 12 17 14 | 0 -10 -16 -17 -25 -19 }}
Mapping: {{mapping| 1 -3 -5 -5 -8 -5 | 0 10 16 17 25 19 }}


Optimal tunings:  
Optimal tunings:  
* CTE: ~2 = 1200.000, ~7/5 = 549.987
* WE: ~2 = 1200.1161{{c}}, ~7/5 = 550.0107{{c}}
* CWE: ~2 = 1200.000, ~7/5 = 549.966
* CWE: ~2 = 1200.0000{{c}}, ~7/5 = 549.9663{{c}}
* POTE: ~2 = 1200.000, ~7/5 = 549.958


{{Optimal ET sequence|legend=0| 11cdeef, 13cdeef, 24 }}
{{Optimal ET sequence|legend=0| 11cdeef, 13cdeef, 24 }}


Badness (Smith): 0.0499
Badness (Sintel): 2.06


[[Category:Temperament families]]
[[Category:Temperament families]]

Latest revision as of 14:46, 22 August 2025

This is a list showing technical temperament data. For an explanation of what information is shown here, you may look at the technical data guide for regular temperaments.

The ripple family of temperaments tempers out the ripple comma (ratio: 6561/6250, monzo: [-1 8 -5⟩), which equates a stack of five 27/25's with 4/3.

Ripple

The generator of ripple is a semitone representing 27/25, five of which give 4/3, and eight of which give 8/5. The ploidacot of ripple is omega-pentacot. This means that 27/25 is severely flattened, so that the characteristic damage is a strongly flat-tempered fourth reached at 5 semitones. Interestingly, in optimal tunings, the major third of ~5/4 does not tend to be damaged much sharpwards as one might expect from the equivalence, and is in practice sometimes even flat, so that prime 3 takes on practically the whole damage of the 5-limit equivalence, for which it has the advantage of being the simplest so still having a good chance at psychoacoustic viability. As a result though, the mapping of ~9/8 is often very flat, so that ripple can in practice be thought of as a dual-fifth temperament unless you use tunings close to 12edo.

Reasonable patent val tunings not appearing in the optimal ET sequence are 35edo and 47edo.

Subgroup: 2.3.5

Comma list: 6561/6250

Mapping: [⟨1 2 3], ⟨0 -5 -8]]

mapping generators: ~2, ~27/25

Optimal tunings:

  • WE: ~2 = 1200.2636 ¢, ~27/25 = 100.8602 ¢
error map: ⟨+0.264 -5.729 +7.596]
  • CWE: ~2 = 1200.0000 ¢, ~27/25 = 100.7982 ¢
error map: ⟨0.000 -5.946 +7.300]

Tuning ranges:

Optimal ET sequence: 11c, 12, 71b, 83b

Badness (Sintel): 3.26

Overview to extensions

The second comma of the comma list defines which 7-limit family member we are looking at:

Both use the same nominal generator as ripple.

For weak extensions, we have hemiripple and cohemiripple. Hemiripple adds 49/48, spliting the semitone generator in two. Cohemiripple adds 245/243, spliting the octave complement of the semitone generator in two.

Septimal ripple

See also: Dual-fifth temperaments

Septimal ripple interprets the generator as a very flat ~15/14, so that 3 and 5 are flat and 7 is sharp; of these, 3 is the most damaged, but is also the simplest, so is still viable as an approximation. Due to the sharp 7 and flatter 3, ~21/16 can be fairly in-tune, acting as the alternate fourth in a dual-fourth interpretation, so that the inconsistent but more accurate ~16/9 is reached as ~(21/16)⋅(4/3) = ~7/4, though this assumes you are putting the most damage on 3 as to get larger primes more in tune. This has another advantage, specific to the 11-limit: this accurate but inconsistent ~9/8 (which is usually just to slightly sharp) can find the neutral third ~11/9 with reasonable accuracy.

If you are looking for the former canonical extension, see #Rip.

Subgroup: 2.3.5.7

Comma list: 126/125, 405/392

Mapping: [⟨1 2 3 4], ⟨0 -5 -8 -14]]

Optimal tunings:

  • WE: ~2 = 1201.7546 ¢, ~15/14 = 102.1309 ¢
error map: ⟨+1.755 -9.100 +1.903 +8.360]
  • CWE: ~2 = 1200.0000 ¢, ~15/14 = 101.7772 ¢
error map: ⟨0.000 -10.841 -0.531 +6.294]

Optimal ET sequence: 11cd, 12, 35, 47

Badness (Sintel): 1.52

11-limit

A notable patent val tuning of 11-limit ripple not appearing in the optimal ET sequence is 47edo.

Subgroup: 2.3.5.7.11

Comma list: 45/44, 99/98, 126/125

Mapping: [⟨1 2 3 4 5], ⟨0 -5 -8 -14 -18]]

Optimal tunings:

  • WE: ~2 = 1202.5973 ¢, ~15/14 = 102.7900 ¢
error map: ⟨+2.597 -10.710 -0.842 +2.504 +11.449]
  • CWE: ~2 = 1200.0000 ¢, ~15/14 = 102.2972 ¢
error map: ⟨0.000 -13.441 -4.691 -0.986 +7.333]

Optimal ET sequence: 11cdee, 12, 23de, 35

Badness (Sintel): 1.33

Rip

Formerly known as septimal ripple, but de-canonized in favour of canonizing a significantly more accurate extension of similar efficiency so that #Ripple admits nontrivial edo tunings of interest. The reason for de-canonization is not coming close to preserving the damage level of 5-limit ripple to the 7-limit or even of this 7-limit damage level to the 11-limit.

Subgroup: 2.3.5.7

Comma list: 36/35, 2560/2401

Mapping: [⟨1 2 3 3], ⟨0 -5 -8 -2]]

Optimal tunings:

  • WE: ~2 = 1195.0347 ¢, ~21/20 = 99.0710 ¢
error map: ⟨-4.965 -7.240 +6.223 +18.136]
  • CWE: ~2 = 1200.0000 ¢, ~21/20 = 100.1093 ¢
error map: ⟨0.000 -2.501 +12.812 +30.956]

Optimal ET sequence: 11c, 12

Badness (Sintel): 1.51

11-limit

Subgroup: 2.3.5.7.11

Comma list: 36/35, 80/77, 126/121

Mapping: [⟨1 2 3 3 4], ⟨0 -5 -8 -2 -6]]

Optimal tunings:

  • WE: ~2 = 1192.7877 ¢, ~21/20 = 98.7876 ¢
  • CWE: ~2 = 1200.0000 ¢, ~21/20 = 100.3202 ¢

Optimal ET sequence: 11c, 12

Badness (Sintel): 1.28

13-limit

Subgroup: 2.3.5.7.11.13

Comma list: 36/35, 40/39, 66/65, 147/143

Mapping: [⟨1 2 3 3 4 4], ⟨0 -5 -8 -2 -6 -3]]

Optimal tunings:

  • WE: ~2 = 1189.8521 ¢, ~21/20 = 97.7384 ¢
  • CWE: ~2 = 1200.0000 ¢, ~21/20 = 99.7618 ¢

Optimal ET sequence: 11c, 12f, 37ccddeeeeffff

Badness (Sintel): 1.31

Hemiripple

Hemiripple tempers out 49/48 and splits the semitone generator in two for ~36/35. Its ploidacot is omega-decacot.

Subgroup: 2.3.5.7

Comma list: 49/48, 6561/6250

Mapping: [⟨1 2 3 3], ⟨0 -10 -16 -5]]

mapping generators: ~2, ~36/35

Optimal tunings:

  • WE: ~2 = 1203.5561 ¢, ~36/35 = 50.9765 ¢
error map: ⟨+3.556 -4.608 +8.730 -13.040]
  • CWE: ~2 = 1200.0000 ¢, ~36/35 = 50.5928 ¢
error map: ⟨0.000 -7.883 +4.201 -21.790]

Optimal ET sequence: 23d, 24, 47d

Badness (Sintel): 4.43

11-limit

Subgroup: 2.3.5.7.11

Comma list: 49/48, 121/120, 567/550

Mapping: [⟨1 2 3 3 4], ⟨0 -10 -16 -5 -13]]

Optimal tunings:

  • WE: ~2 = 1203.5344 ¢, ~36/35 = 50.9757 ¢
  • CWE: ~2 = 1200.0000 ¢, ~36/35 = 50.5870 ¢

Optimal ET sequence: 23de, 24, 47de

Badness (Sintel): 2.21

13-limit

Subgroup: 2.3.5.7.11.13

Comma list: 49/48, 66/65, 121/120, 351/350

Mapping: [⟨1 2 3 3 4 4], ⟨0 -10 -16 -5 -13 -7]]

Optimal tunings:

  • WE: ~2 = 1202.0936 ¢, ~36/35 = 50.7232 ¢
  • CWE: ~2 = 1200.0000 ¢, ~36/35 = 50.5048 ¢

Optimal ET sequence: 23de, 24

Badness (Sintel): 1.93

Cohemiripple

See also: Sensamagic clan

Cohemiripple tempers out 245/243 and splits the octave complement of the semitone generator of ripple in two, each of which is used for ~7/5. Its ploidacot is delta-decacot.

Subgroup: 2.3.5.7

Comma list: 245/243, 1323/1250

Mapping: [⟨1 -3 -5 -5], ⟨0 10 16 17]]

mapping generators: ~2, ~7/5

Optimal tunings:

  • WE: ~2 = 1200.6977 ¢, ~7/5 = 550.2638 ¢
error map: ⟨+0.698 -1.410 +14.418 -17.830]
  • CWE: ~2 = 1200.0000 ¢, ~7/5 = 549.9979 ¢
error map: ⟨0.000 -1.976 +13.653 -18.861]

Optimal ET sequence: 11cd, 13cd, 24

Badness (Sintel): 4.81

11-limit

Subgroup: 2.3.5.7.11

Comma list: 77/75, 243/242, 245/242

Mapping: [⟨1 -3 -5 -5 -8], ⟨0 10 16 17 25]]

Optimal tunings:

  • WE: ~2 = 1200.6959 ¢, ~7/5 = 550.2641 ¢
  • CWE: ~2 = 1200.0000 ¢, ~7/5 = 549.9969 ¢

Optimal ET sequence: 11cdee, 13cdee, 24

Badness (Sintel): 2.73

13-limit

Subgroup: 2.3.5.7.11.13

Comma list: 66/65, 77/75, 147/143, 243/242

Mapping: [⟨1 -3 -5 -5 -8 -5], ⟨0 10 16 17 25 19]]

Optimal tunings:

  • WE: ~2 = 1200.1161 ¢, ~7/5 = 550.0107 ¢
  • CWE: ~2 = 1200.0000 ¢, ~7/5 = 549.9663 ¢

Optimal ET sequence: 11cdeef, 13cdeef, 24

Badness (Sintel): 2.06

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