22L 1s

From Xenharmonic Wiki
Revision as of 08:37, 15 December 2024 by BudjarnLambeth (talk | contribs) (== Intervals == {{MOS intervals}})
Jump to navigation Jump to search
← 21L 1s 22L 1s 23L 1s →
↙ 21L 2s ↓ 22L 2s 23L 2s ↘
┌╥╥╥╥╥╥╥╥╥╥╥╥╥╥╥╥╥╥╥╥╥╥┬┐
│║║║║║║║║║║║║║║║║║║║║║║││
│││││││││││││││││││││││││
└┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┘
Scale structure
Step pattern LLLLLLLLLLLLLLLLLLLLLLs
sLLLLLLLLLLLLLLLLLLLLLL
Equave 2/1 (1200.0 ¢)
Period 2/1 (1200.0 ¢)
Generator size
Bright 1\23 to 1\22 (52.2 ¢ to 54.5 ¢)
Dark 21\22 to 22\23 (1145.5 ¢ to 1147.8 ¢)
TAMNAMS information
Related to 1L 9s (antisinatonic)
With tunings 13:1 to 14:1
Related MOS scales
Parent 1L 21s
Sister 1L 22s
Daughters 23L 22s, 22L 23s
Neutralized 21L 2s
2-Flought 45L 1s, 22L 24s
Equal tunings
Equalized (L:s = 1:1) 1\23 (52.2 ¢)
Supersoft (L:s = 4:3) 4\91 (52.7 ¢)
Soft (L:s = 3:2) 3\68 (52.9 ¢)
Semisoft (L:s = 5:3) 5\113 (53.1 ¢)
Basic (L:s = 2:1) 2\45 (53.3 ¢)
Semihard (L:s = 5:2) 5\112 (53.6 ¢)
Hard (L:s = 3:1) 3\67 (53.7 ¢)
Superhard (L:s = 4:1) 4\89 (53.9 ¢)
Collapsed (L:s = 1:0) 1\22 (54.5 ¢)

22L 1s is a 2/1-equivalent (octave-equivalent) moment of symmetry scale containing 22 large steps and 1 small step, repeating every octave. 22L 1s is related to 1L 9s, expanding it by 13 tones. Generators that produce this scale range from 52.2 ¢ to 54.5 ¢, or from 1145.5 ¢ to 1147.8 ¢. Scales of this form are always proper because there is only one small step. This scale is produced by stacking the interval of 33/32 (around 53¢).

The name quartismoid is proposed for this pattern since its harmonic entropy minimum corresponds to tempering out the quartisma - five 33/32s being equated with 7/6. In addition, both 22edo and 23edo, extreme ranges of the MOS temper out the quartisma, as well as a large portion of EDOs up to 100-200 which have this scale.

Tuning ranges

Mavila fifth and 91edo (Ultrasoft and supersoft)

Between 4\91 and 1\23, 13 steps amount to a pelog / mavila fifth, which corresponds to the ultrasoft step ratio range. In 91edo, the fifth produced by 13 steps of the quartismoid scale is the same as 4 steps of 7edo, and thus is the exact boundary between mavila and diatonic.

Diatonic fifth (hard of supersoft)

From 1\22 to 4\91, 13 steps amount to a diatonic fifth.

If the pure 33/32 is used as a generator, the resulting fifth is 692.54826 cents, which puts it in the category around flattone.

700-cent, just, and superpyth fifths (step ratio 7:2 and harder)

In 156edo, the fifth becomes the 12edo 700-cent fifth. In 200edo, the fifth comes incredibly close to just, as the number 200 is a semiconvergent denominator to the approximation of log2(3/2).

When the step ratio is greater than 4.472, then 13 generators amount to a superpyth fifth and the tuning approaches 22edo.

Relation to other equal divisions

6 steps act as a pseudo-6/5, and when they actually act as 6/5 along with 5 steps being equal to 7/6, 385/384 is tempered out. If one were to instead tune in favour of 6/5 instead of 7/6, the resulting hardness would be around 1.233. 114edo and 137edo represent this the best.

Modes

Eliora proposes naming the brightest mode Alpharabian, after the fact that 33/32 is called Al-Farabi quarter-tone, and the rest after Tarot Major Arcana adjectivals based on how many generators down there is.

Mode Name
22|0 Alpharabian
21|1 Magical
20|2 High Priestess's
19|3 Empress's
... ...
2|20 Judgemental
1|21 Worldwide
0|22 Foolish

Intervals

Intervals of 22L 1s
Intervals Steps
subtended
Range in cents
Generic Specific Abbrev.
0-mosstep Perfect 0-mosstep P0ms 0 0.0 ¢
1-mosstep Diminished 1-mosstep d1ms s 0.0 ¢ to 52.2 ¢
Perfect 1-mosstep P1ms L 52.2 ¢ to 54.5 ¢
2-mosstep Minor 2-mosstep m2ms L + s 54.5 ¢ to 104.3 ¢
Major 2-mosstep M2ms 2L 104.3 ¢ to 109.1 ¢
3-mosstep Minor 3-mosstep m3ms 2L + s 109.1 ¢ to 156.5 ¢
Major 3-mosstep M3ms 3L 156.5 ¢ to 163.6 ¢
4-mosstep Minor 4-mosstep m4ms 3L + s 163.6 ¢ to 208.7 ¢
Major 4-mosstep M4ms 4L 208.7 ¢ to 218.2 ¢
5-mosstep Minor 5-mosstep m5ms 4L + s 218.2 ¢ to 260.9 ¢
Major 5-mosstep M5ms 5L 260.9 ¢ to 272.7 ¢
6-mosstep Minor 6-mosstep m6ms 5L + s 272.7 ¢ to 313.0 ¢
Major 6-mosstep M6ms 6L 313.0 ¢ to 327.3 ¢
7-mosstep Minor 7-mosstep m7ms 6L + s 327.3 ¢ to 365.2 ¢
Major 7-mosstep M7ms 7L 365.2 ¢ to 381.8 ¢
8-mosstep Minor 8-mosstep m8ms 7L + s 381.8 ¢ to 417.4 ¢
Major 8-mosstep M8ms 8L 417.4 ¢ to 436.4 ¢
9-mosstep Minor 9-mosstep m9ms 8L + s 436.4 ¢ to 469.6 ¢
Major 9-mosstep M9ms 9L 469.6 ¢ to 490.9 ¢
10-mosstep Minor 10-mosstep m10ms 9L + s 490.9 ¢ to 521.7 ¢
Major 10-mosstep M10ms 10L 521.7 ¢ to 545.5 ¢
11-mosstep Minor 11-mosstep m11ms 10L + s 545.5 ¢ to 573.9 ¢
Major 11-mosstep M11ms 11L 573.9 ¢ to 600.0 ¢
12-mosstep Minor 12-mosstep m12ms 11L + s 600.0 ¢ to 626.1 ¢
Major 12-mosstep M12ms 12L 626.1 ¢ to 654.5 ¢
13-mosstep Minor 13-mosstep m13ms 12L + s 654.5 ¢ to 678.3 ¢
Major 13-mosstep M13ms 13L 678.3 ¢ to 709.1 ¢
14-mosstep Minor 14-mosstep m14ms 13L + s 709.1 ¢ to 730.4 ¢
Major 14-mosstep M14ms 14L 730.4 ¢ to 763.6 ¢
15-mosstep Minor 15-mosstep m15ms 14L + s 763.6 ¢ to 782.6 ¢
Major 15-mosstep M15ms 15L 782.6 ¢ to 818.2 ¢
16-mosstep Minor 16-mosstep m16ms 15L + s 818.2 ¢ to 834.8 ¢
Major 16-mosstep M16ms 16L 834.8 ¢ to 872.7 ¢
17-mosstep Minor 17-mosstep m17ms 16L + s 872.7 ¢ to 887.0 ¢
Major 17-mosstep M17ms 17L 887.0 ¢ to 927.3 ¢
18-mosstep Minor 18-mosstep m18ms 17L + s 927.3 ¢ to 939.1 ¢
Major 18-mosstep M18ms 18L 939.1 ¢ to 981.8 ¢
19-mosstep Minor 19-mosstep m19ms 18L + s 981.8 ¢ to 991.3 ¢
Major 19-mosstep M19ms 19L 991.3 ¢ to 1036.4 ¢
20-mosstep Minor 20-mosstep m20ms 19L + s 1036.4 ¢ to 1043.5 ¢
Major 20-mosstep M20ms 20L 1043.5 ¢ to 1090.9 ¢
21-mosstep Minor 21-mosstep m21ms 20L + s 1090.9 ¢ to 1095.7 ¢
Major 21-mosstep M21ms 21L 1095.7 ¢ to 1145.5 ¢
22-mosstep Perfect 22-mosstep P22ms 21L + s 1145.5 ¢ to 1147.8 ¢
Augmented 22-mosstep A22ms 22L 1147.8 ¢ to 1200.0 ¢
23-mosstep Perfect 23-mosstep P23ms 22L + s 1200.0 ¢

Scale tree

Template:Scale tree

See also