7L 12s

↖ 6L 11s	↑ 7L 11s	8L 11s ↗
← 6L 12s	7L 12s	8L 12s →
↙ 6L 13s	↓ 7L 13s	8L 13s ↘

┌╥┬╥┬┬╥┬┬╥┬╥┬┬╥┬┬╥┬┬┐ │║│║││║││║│║││║││║│││ │││││││││││││││││││││ └┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┘
Scale structure
Step pattern	LsLssLssLsLssLssLss ssLssLssLsLssLssLsL
Equave	2/1 (1200.0 ¢)
Period	2/1 (1200.0 ¢)
Generator size
Bright	8\19 to 3\7 (505.3 ¢ to 514.3 ¢)
Dark	4\7 to 11\19 (685.7 ¢ to 694.7 ¢)
TAMNAMS information
Related to	5L 2s (diatonic)
With tunings	1:1 to 3:2 (soft)
Related MOS scales
Parent	7L 5s
Sister	12L 7s
Daughters	19L 7s, 7L 19s
Neutralized	14L 5s
2-Flought	26L 12s, 7L 31s
Equal tunings
Equalized (L:s = 1:1)	8\19 (505.3 ¢)
Supersoft (L:s = 4:3)	27\64 (506.2 ¢)
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 ¢)
Collapsed (L:s = 1:0)	3\7 (514.3 ¢)

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