7L 12s

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7L 12s
Pattern LsLssLssLsLssLssLss
Period 2/1
Generator range 8\19 (505.3¢) to 3\7 (514.3¢)
Parent MOS 7L 5s
Daughter MOSes 19L 7s, 7L 19s
Sister MOS 12L 7s
Equal tunings
Supersoft (L:s = 4:3) 27\64 (506.3¢)
Soft (L:s = 3:2) 19\45 (506.7¢)
Semisoft (L:s = 5:3) 30\71 (507.0¢)
Basic (L:s = 2:1) 11\26 (507.7¢)
Semihard (L:s = 5:2) 25\59 (508.5¢)
Hard (L:s = 3:1) 14\33 (509.1¢)
Superhard (L:s = 4:1) 17\40 (510.0¢)

7L 12s is the MOS pattern of the flattone enharmonic or mega-chromatic scale. This MOS separates its large steps by intervals of 2s-2s-2s-1s-2s-2s-1s like the familiar 12edo diatonic scale. The perfect fourth which generates it measures 8\19 (505.263 cents) to 3\7 (514.286 cents).

The flattone enharmonic scale with generator between 8\19 (505.263 cents) and 11\26 (507.692 cents) is proper.

Modes

  • 18|0 LsLssLssLsLssLssLss
  • 17|1 LsLssLssLssLsLssLss
  • 16|2 LssLsLssLssLsLssLss
  • 15|3 LssLsLssLssLssLsLss
  • 14|4 LssLssLsLssLssLsLss
  • 13|5 LssLssLsLssLssLssLs
  • 12|6 LssLssLssLsLssLssLs
  • 11|7 sLsLssLssLsLssLssLs
  • 10|8 sLsLssLssLssLsLssLs
  • 9|9 sLssLsLssLssLsLssLs
  • 8|10 sLssLsLssLssLssLsLs
  • 7|11 sLssLssLsLssLssLsLs
  • 6|12 sLssLssLsLssLssLssL
  • 5|13 sLssLssLssLsLssLssL
  • 4|14 ssLsLssLssLsLssLssL
  • 3|15 ssLsLssLssLssLsLssL
  • 2|16 ssLssLsLssLssLsLssL
  • 1|17 ssLssLsLssLssLssLsL
  • 0|18 ssLssLssLsLssLssLsL

Scale tree

Generator ranges:

  • Chroma-positive generator: 505.2632 cents (8\19) to 514.2857 cents (3\7)
  • Chroma-negative generator: 685.7143 cents (4\7) to 694.7368 cents (11\19)
Generator Cents L s L/s Comments
8\19 505.263 1 1 1.000
43\102 505.882 6 5 1.200
35\83 506.024 5 4 1.250
62\147 506.122 9 7 1.286
27\64 506.250 4 3 1.333
73\173 506.358 11 8 1.375
46\109 506.422 7 5 1.400
65\154 506.494 10 7 1.428
19\45 506.667 3 2 1.500 Flattone
68\161 506.832 11 7 1.571
49\116 506.897 8 5 1.600
79\187 506.952 13 8 1.625 Golden flattone (506.9365¢)
30\71 507.042 5 3 1.667
71\168 507.143 12 7 1.714
41\97 507.216 7 4 1.750
52\123 507.317 9 5 1.800
11\26 507.692 2 1 2.000 Basic 7L 12s
(Generators smaller than this are proper)
47\111 508.108 9 4 2.250
36\85 508.235 7 3 2.333
61\144 508.333 12 5 2.400
25\59 508.475 5 2 2.500
64\151 508.609 13 5 2.600 Unnamed golden tuning (508.6329¢)
39\92 508.696 8 3 2.667
53\125 508.800 11 4 2.750
14\33 509.091 3 1 3.000
45\106 509.434 10 3 3.333
31\73 509.589 7 2 3.500
48\113 509.735 11 3 3.667
17\40 510.000 4 1 4.000
37\87 510.345 9 2 4.500
20\47 510.638 5 1 5.000
23\54 511.111 6 1 6.000
3\7 514.286 1 0 → inf