9L 3s

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↖8L 2s↑9L 2s 10L 2s↗
←8L 3s9L 3s10L 3s→
↙8L 4s↓9L 4s 10L 4s↘
Brightest mode LLLsLLLsLLLs
Period 1\3
Range for bright generator 1\12 (100¢) to 1\9 (133.3¢)
Range for dark generator 2\9 (266.7¢) to 3\12 (300¢)
Parent MOS 3L 6s
Sister MOS 3L 9s
Daughter MOSes 12L 9s, 9L 12s
Equal tunings
Supersoft (L:s = 4:3) 4\45 (106.7¢)
Soft (L:s = 3:2) 3\33 (109.1¢)
Semisoft (L:s = 5:3) 5\54 (111.1¢)
Basic (L:s = 2:1) 2\21 (114.3¢)
Semihard (L:s = 5:2) 5\51 (117.6¢)
Hard (L:s = 3:1) 3\30 (120¢)
Superhard (L:s = 4:1) 4\39 (123.1¢)

This MOS is always proper because its period runs LLLs. It is generated by a diatonic semitone or "trienthird"/2/3-tone of 1/12edo (100 cents) to 1/9edo (133.33). It represents, among other chromatic scales, that of the August temperament.

1/12 100
5/57 105.263
4/45 106.667
7/78 107.5385
10/111 108.108
3/33 109.111
109.992
8/87 110.345
110.557
5/54 111.111
111.815
7/75 112
9/96 112.5
11/117 112.8205
13/138 113.0435
2/21 114.286
11/114 115.7895
9/93 116.129
7/72 116.667
5/51 117.647
118.274
8/81 118.5185
118.769
11/111 118.919
14/141 119.149
3/30 120
120.543
7/69 121.739
11/108 122.222
4/39 123.138
9/87 124.138
5/48 125
1/9 133.333