22L 1s

Revision as of 15:05, 25 September 2022 by Eliora (talk | contribs) (Scale tree: wrote out because template and the table act really wonky and text was needed to separate them)

22L 1s is the scale that is most commonly produced by stacking the interval of 33/32. If it had a name, it would most probably be quartismoid, since its harmonic entropy minimum corresponds to tempering out the quartisma - five 33/32s being equated with 7/6.

← 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 ¢)
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Relation to equal divisions

13edf

From 1\22 to 4\91, 13 steps amount to a diatonic fifth. Between 4\91 and 1\23, 13 steps amount to a pelog / mavila fifth. In 91edo, the fifth produced by 13 steps is the same as 4 steps of 7 edo, and thus is the boundary between mavila and diatonic.

Further breaking down the categories, when the step ratio is greater than 4.472, then 13 generators amount to a superpyth fifth and the tuning approaches 22edo.

In 156edo, the fifth becomes the 12edo 700-cent fifth.

6ed6/5

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. 91edo and 205edo represent this the best.

Scale tree

Generator L s L/s Comments
1\23 1 1 1.000
6\137 6 5 1.200
5\114 5 4 1.250
9\205 9 7 1.286
4\91 4 3 1.333 13 steps adding to lower bound of diatonic fifths (684.17c) is here
11\250 11 8 1.375
7\159 7 5 1.400
10\227 10 7 1.428
3\68 3 2 1.500 Stretched 23edo is in this range
11\249 11 7 1.571
8\181 8 5 1.600
13\294 13 8 1.625
5\113 5 3 1.667
12\271 12 7 1.714
7\158 7 4 1.750
9\203 9 5 1.800
2\45 2 1 2.000 Basic quartismoid
9\202 9 4 2.250
7\157 7 3 2.333
12\269 12 5 2.400
5\112 5 2 2.500 13 steps adding to 1/4 comma meantone fifth

is around here

13\291 13 5 2.600
8\179 8 3 2.667
11\246 11 4 2.750
3\67 3 1 3.000
10\223 10 3 3.333
7\156 7 2 3.500
11\245 11 3 3.667
4\89 4 1 4.000
9\200 9 2 4.500 13 steps adding to 3/2 perfect fifth is around here
5\111 5 1 5.000
6\133 6 1 6.000
1\22 1 0 → inf

See also