1375/1372: Difference between revisions

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The use of *moctdelismic* implies the comma name *moctdelisma*
- duplicate data; normalize the name according to the temps; misc. cleanup.
 
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{{Infobox interval
{{Infobox interval
| Name = moctdel comma, moctdelisma
| Name = moctdelisma, moctdelic comma
| Color name = 1or<sup>3</sup>y<sup>3</sup>-3, lotriruyo negative 3rd, <br>Lotriruyo comma
| Color name = 1or<sup>3</sup>y<sup>3</sup>-3, lotriruyo negative 3rd, <br>Lotriruyo comma
| Comma = yes
| Comma = yes
}}
}}
'''1375/1372''', the '''moctdel comma''' or '''moctdelisma''' is a no-threes [[11-limit]] comma with a size of 3.78 [[cent]]s. It is the amount by which a stack of three [[7/5]]s falls short of [[11/4]], undecimal eleventh (one octave above [[11/8]]). Some rank-two temperaments such as [[Gamelismic clan|miracle]], [[Ragismic microtemperaments|octoid]] and [[Mirkwai clan|grendel]] temper out this comma, and from this it derives its name.
'''1375/1372''', the '''moctdelisma''' or '''moctdelic comma''' is a [[small comma|small]] no-3's [[11-limit]] [[comma]] with a size of 3.78 [[cent]]s. It is the amount by which a stack of three [[7/5]]'s falls short of [[11/4]], the undecimal semi-augmented eleventh (one octave above [[11/8]]).  


== Temperaments ==
== Temperaments ==
Tempering out this comma leads to the rank-4 '''moctdelismic temperament''' in the full [[11-limit]], and '''moctdelic temperament''' in its minimal prime [[subgroup]] of 2.5.7.11.
[[Tempering out]] this comma in the full [[11-limit]] leads to the rank-4 [[moctdelismic]] temperament, and in its minimal prime [[subgroup]] of 2.5.7.11, the [[moctdelic]] temperament. Some rank-2 temperaments such as [[miracle]], [[octoid]] and [[grendel]] temper out this comma, and from this it derives its name.


In the 2.7/5.11 subgroup it creates a very efficient temperament with a generator of 7/5, two of which equals [[55/28]] and three of which equals [[11/4]] as discussed. If we split the generator in 3, we get [[~]][[28/25]] which is notable as the difference between [[5/4]] and [[7/5]] so that two gens finds 5/4, four gens finds [[25/16]]~[[11/7]] and seven gens finds [[11/5]], which is the (no-3's) 11-limit version of [[didacus]], a very strong temperament of the 2.5.7.11 subgroup.
In the 2.7/5.11 subgroup it creates a very efficient temperament with a generator of 7/5, two of which equals [[55/28]] and three of which equals [[11/4]] as discussed. If we split the generator in 3, we get [[~]][[28/25]] which is notable as the difference between [[5/4]] and [[7/5]] so that two gens finds 5/4, four gens finds [[25/16]]~[[11/7]] and seven gens finds [[11/5]], which is the (no-3's) 11-limit version of [[didacus]], a very strong temperament of the 2.5.7.11 subgroup.


=== Moctdelismic ===
See [[Moctdelismic clan]] for the [[clan of temperaments]] where it is tempered out.
[[Comma list]]: 1375/1372
 
[[Subgroup]]: full 11-limit
 
{{Mapping|legend=1| 1 0 0 0 2 | 0 1 0 0 0 | 0 0 1 0 -3 | 0 0 0 1 3 }}
 
[[Optimal tuning]]s:
* [[WE]]: ~2 = 1200.056¢, ~3 = 1901.955¢, ~5 = 2785.862¢, ~7 = 3369.486¢
* [[CWE]]: ~2 = 1200.000¢, ~3 = 1901.910¢, ~5 = 2785.789¢, ~7 = 3369.416¢
 
{{Optimal ET sequence|legend=1| 12, 19e, 29, 31, 41, 72, 152, 224 }}
 
[[Badness]] (Sintel): 0.723
 
=== Moctdelic ===
[[Comma list]]: 1375/1372
 
[[Subgroup]]: 2.5.7.11
 
{{Mapping|legend=1| 1 0 0 2 | 0 1 0 -3 | 0 0 1 3 }}
 
[[Optimal tuning]]s:
* [[WE]]: ~2 = 1200.056¢, ~5 = 2785.862¢, ~7 = 3369.486¢
* [[CWE]]: ~2 = 1200.000¢, ~5 = 2785.789¢, ~7 = 3369.416¢
 
{{Optimal ET sequence|legend=1| 25, 29, 31, 37 }}
 
[[Badness]] (Sintel): 0.110
 
== See also ==
* [[Small comma]]
* [[Moctdelismic clan]]


[[Category:Moctdelismic]]
[[Category:Moctdelismic]]
[[Category:Commas named by combining multiple temperament names]]
[[Category:Commas named by combining multiple temperament names]]

Latest revision as of 10:37, 3 September 2026

Interval information
Ratio 1375/1372
Factorization 2-2 × 53 × 7-3 × 11
Monzo [-2 0 3 -3 1
Size in cents 3.781365 ¢
Names moctdelisma,
moctdelic comma
Color name 1or3y3-3, lotriruyo negative 3rd,
Lotriruyo comma
FJS name [math]\displaystyle{ \text{dd}{-3}^{5,5,5,11}_{7,7,7} }[/math]
Special properties reduced
Tenney norm (log2 nd) 20.8473
Weil norm (log2 max(n, d)) 20.8504
Wilson norm (sopfr(nd)) 51
Comma size small
Open this interval in xen-calc

1375/1372, the moctdelisma or moctdelic comma is a small no-3's 11-limit comma with a size of 3.78 cents. It is the amount by which a stack of three 7/5's falls short of 11/4, the undecimal semi-augmented eleventh (one octave above 11/8).

Temperaments

Tempering out this comma in the full 11-limit leads to the rank-4 moctdelismic temperament, and in its minimal prime subgroup of 2.5.7.11, the moctdelic temperament. Some rank-2 temperaments such as miracle, octoid and grendel temper out this comma, and from this it derives its name.

In the 2.7/5.11 subgroup it creates a very efficient temperament with a generator of 7/5, two of which equals 55/28 and three of which equals 11/4 as discussed. If we split the generator in 3, we get ~28/25 which is notable as the difference between 5/4 and 7/5 so that two gens finds 5/4, four gens finds 25/16~11/7 and seven gens finds 11/5, which is the (no-3's) 11-limit version of didacus, a very strong temperament of the 2.5.7.11 subgroup.

See Moctdelismic clan for the clan of temperaments where it is tempered out.