9L 18s

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↖ 8L 17s ↑ 9L 17s 10L 17s ↗
← 8L 18s 9L 18s 10L 18s →
↙ 8L 19s ↓ 9L 19s 10L 19s ↘
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Scale structure
Step pattern LssLssLssLssLssLssLssLssLss
ssLssLssLssLssLssLssLssLssL
Equave 2/1 (1200.0 ¢)
Period 1\9 (133.3 ¢)
Generator size
Bright 2\27 to 1\9 (88.9 ¢ to 133.3 ¢)
Dark 0\9 to 1\27 (0.0 ¢ to 44.4 ¢)
TAMNAMS information
Related to 9L 9s
With tunings 2:1 to 1:0 (hard-of-basic)
Related MOS scales
Parent 9L 9s
Sister 18L 9s
Daughters 27L 9s, 9L 27s
Neutralized 18L 9s
2-Flought 36L 18s, 9L 45s
Equal tunings
Equalized (L:s = 1:1) 2\27 (88.9 ¢)
Supersoft (L:s = 4:3) 7\90 (93.3 ¢)
Soft (L:s = 3:2) 5\63 (95.2 ¢)
Semisoft (L:s = 5:3) 8\99 (97.0 ¢)
Basic (L:s = 2:1) 3\36 (100.0 ¢)
Semihard (L:s = 5:2) 7\81 (103.7 ¢)
Hard (L:s = 3:1) 4\45 (106.7 ¢)
Superhard (L:s = 4:1) 5\54 (111.1 ¢)
Collapsed (L:s = 1:0) 1\9 (133.3 ¢)

This is the MOS with 9 periods of 1L 2s. Its generator is not greater than a "pure" diesis or "neutral" quartertone of 1/27edo (44.444 cents).

generator L s L/s gen (cents) comment
0\9 1 0 0.000
1\99 9 1 9.000 12.121
1\90 8 1 8.000 13.333
2\171 15 2 7.500 14.035
1\81 7 1 7.000 14.815
2\153 13 2 6.500 15.686
1\72 6 1 6.000 16.667
3\207 17 3 5.667 17.391
2\135 11 2 5.500 17.778
3\198 16 3 5.333 18.182
1\63 5 1 5.000 19.048
3\180 14 3 4.667 20.000
2\117 9 2 4.500 20.513
3\171 13 3 4.333 21.053
1\54 4 1 4.000 22.222
4\207 15 4 3.750 23.188
3\153 11 3 3.667 23.529
2\99 7 2 3.500 24.242
3\144 10 3 3.333 25.000
4\189 13 4 3.250 25.397
1\45 3 1 3.000 26.667
5\216 14 5 2.800 27.778
4\171 11 4 2.750 28.070
3\126 8 3 2.667 28.571
5\207 13 5 2.600 28.986
2\81 5 2 2.500 29.630
5\198 12 5 2.400 30.303
3\117 7 3 2.333 30.769
4\153 9 4 2.250 31.373
5\189 11 5 2.200 31.746
1\36 2 1 2.000 33.333
6\207 11 6 1.833 34.783
5\171 9 5 1.800 35.088
4\135 7 4 1.750 35.556
3\99 5 3 1.667 36.364
5\162 8 5 1.600 37.037
2\63 3 2 1.500 38.095
7\216 10 7 1.429 38.889
5\153 7 5 1.400 39.216
3\90 4 3 1.333 40.000
7\207 9 7 1.286 40.580
4\117 5 4 1.250 41.026
5\144 6 5 1.200 41.667
6\171 7 6 1.167 42.105
7\198 8 7 1.143 42.424
8\225 9 8 1.125 42.667
1\27 1 1 1.000 44.444