7L 9s

↖ 6L 8s	↑ 7L 8s	8L 8s ↗
← 6L 9s	7L 9s	8L 9s →
↙ 6L 10s	↓ 7L 10s	8L 10s ↘

Scale structure
Step pattern	LsLsLsLssLsLsLss ssLsLsLssLsLsLsL
Equave	2/1 (1200.0 ¢)
Period	2/1 (1200.0 ¢)
Generator size
Bright	9\16 to 4\7 (675.0 ¢ to 685.7 ¢)
Dark	3\7 to 7\16 (514.3 ¢ to 525.0 ¢)
TAMNAMS information
Related to	7L 2s (armotonic)
With tunings	2:1 to 1:0 (hard-of-basic)
Related MOS scales
Parent	7L 2s
Sister	9L 7s
Daughters	16L 7s, 7L 16s
Neutralized	14L 2s
2-Flought	23L 9s, 7L 25s
Equal tunings
Equalized (L:s = 1:1)	9\16 (675.0 ¢)
Supersoft (L:s = 4:3)	31\55 (676.4 ¢)
Soft (L:s = 3:2)	22\39 (676.9 ¢)
Semisoft (L:s = 5:3)	35\62 (677.4 ¢)
Basic (L:s = 2:1)	13\23 (678.3 ¢)
Semihard (L:s = 5:2)	30\53 (679.2 ¢)
Hard (L:s = 3:1)	17\30 (680.0 ¢)
Superhard (L:s = 4:1)	21\37 (681.1 ¢)
Collapsed (L:s = 1:0)	4\7 (685.7 ¢)
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7L 9s is a 2/1-equivalent (octave-equivalent) moment of symmetry scale containing 7 large steps and 9 small steps, repeating every octave. 7L 9s is a child scale of 7L 2s, expanding it by 7 tones. Generators that produce this scale range from 675 ¢ to 685.7 ¢, or from 514.3 ¢ to 525 ¢.

Most notable as the 16-tone Mavila scale. The entire range is suitable for mavila, but generators around 520 to 522 cents are perhaps "best".

Modes

Modes of 7L 9s

UDP	Cyclic order	Step pattern
15|0	1	LsLsLsLssLsLsLss
14|1	10	LsLsLssLsLsLsLss
13|2	3	LsLsLssLsLsLssLs
12|3	12	LsLssLsLsLsLssLs
11|4	5	LsLssLsLsLssLsLs
10|5	14	LssLsLsLsLssLsLs
9|6	7	LssLsLsLssLsLsLs
8|7	16	sLsLsLsLssLsLsLs
7|8	9	sLsLsLssLsLsLsLs
6|9	2	sLsLsLssLsLsLssL
5|10	11	sLsLssLsLsLsLssL
4|11	4	sLsLssLsLsLssLsL
3|12	13	sLssLsLsLsLssLsL
2|13	6	sLssLsLsLssLsLsL
1|14	15	ssLsLsLsLssLsLsL
0|15	8	ssLsLsLssLsLsLsL

Tuning spectrum

generator									L	s	L/s	gen (cents)	comment
3\7									1	0		514.286
								31\72	9	1	9.000	516.667	Gravity, Marvo are around here
							28\65		8	1	8.000	516.923
						25\58			7	1	7.000	517.241
							47\109		13	2	6.500	517.431
					22\51				6	1	6.000	517.647
						41\95			11	2	5.500	517.895
				19\44					5	1	5.000	518.182
					35\81				9	2	4.500	518.519
			16\37						4	1	4.000	518.919
					45\104				11	3	3.667	519.231
				29\67					7	2	3.500	519.403
					42\97				10	3	3.333	519.588
		13\30							3	1	3.000	520.000
				36\83					8	3	2.667	520.482
			23\53						5	2	2.500	520.755
				33\76					7	3	2.333	521.053	Hornbostel is around here
					43\99				9	4	2.250	521.212
	10\23								2	1	2.000	521.739
					47\108				9	5	1.800	522.222
				37\85					7	4	1.750	522.353
			27\62						5	3	1.667	522.581
				44\101					8	5	1.600	522.772
		17\39							3	2	1.500	523.077
				41\94					7	5	1.400	523.404
			24\55						4	3	1.333	523.636
				31\71					5	4	1.250	523.944
					38\87				6	5	1.200	524.138
						45\103			7	6	1.167	524.272
							52\119		8	7	1.143	524.370
								59\135	9	8	1.125	524.444
7\16									1	1	1.000	525.000