7L 8s

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↖ 6L 7s ↑ 7L 7s 8L 7s ↗
← 6L 8s 7L 8s 8L 8s →
↙ 6L 9s ↓ 7L 9s 8L 9s ↘
Scale structure
Step pattern LsLsLsLsLsLsLss
ssLsLsLsLsLsLsL
Equave 2/1 (1200.0 ¢)
Period 2/1 (1200.0 ¢)
Generator size
Bright 2\15 to 1\7 (160.0 ¢ to 171.4 ¢)
Dark 6\7 to 13\15 (1028.6 ¢ to 1040.0 ¢)
TAMNAMS information
Related to 7L 1s (pine)
With tunings 2:1 to 1:0 (hard-of-basic)
Related MOS scales
Parent 7L 1s
Sister 8L 7s
Daughters 15L 7s, 7L 15s
Neutralized 14L 1s
2-Flought 22L 8s, 7L 23s
Equal tunings
Equalized (L:s = 1:1) 2\15 (160.0 ¢)
Supersoft (L:s = 4:3) 7\52 (161.5 ¢)
Soft (L:s = 3:2) 5\37 (162.2 ¢)
Semisoft (L:s = 5:3) 8\59 (162.7 ¢)
Basic (L:s = 2:1) 3\22 (163.6 ¢)
Semihard (L:s = 5:2) 7\51 (164.7 ¢)
Hard (L:s = 3:1) 4\29 (165.5 ¢)
Superhard (L:s = 4:1) 5\36 (166.7 ¢)
Collapsed (L:s = 1:0) 1\7 (171.4 ¢)
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7L 8s is a 2/1-equivalent (octave-equivalent) moment of symmetry scale containing 7 large steps and 8 small steps, repeating every octave. 7L 8s is a child scale of 7L 1s, expanding it by 7 tones. Generators that produce this scale range from 160 ¢ to 171.4 ¢, or from 1028.6 ¢ to 1040 ¢. 7L 8s refers to a Moment of Symmetry scale with 7 large steps and 8 small steps. One especially notable temperament that falls into this MOS pattern is porcupine, of the porcupine family.

Generator octachord g 2g 3g 4g 5g 6g 7g Comments
2\15 1 1 1 1 1 1 1 160 320 480 640 800 960 1120
9\67 4 5 4 5 4 5 4 161.2 322.4 483.6 644.8 806 967.2 1128.4
7\52 3 4 3 4 3 4 3 161.5 323.1 484.6 646.2 807.7 969.2 1130.8
5\37 2 3 2 3 2 3 2 162.2 324.3 486.5 648.6 810.8 973 1135.1 Optimal rank range (L/s=3/2) porcupine
2 pi 2 pi 2 pi 2 162.4 324.8 487.2 649.6 812 974.4 1136.8
13\96 5 8 5 8 5 8 5 162.5 325 487.5 650 812.5 975 1137.5
1 phi 1 phi 1 phi 1 162.6 325.1 487.7 650.2 812.8 975.35 1137.9 Golden porcupine when L/s=phi
8\59 3 5 3 5 3 5 3 162.7 325.4 488.1 650.8 813.6 976.3 1139
1 √3 1 √3 1 √3 1 162.9 325.9 488.7 651.6 814.55 977.5 1140.4
3\22 1 2 1 2 1 2 1 163.6 327.3 490.9 654.5 818.2 981.8 1145.5 Boundary of propriety (generators

smaller than this are proper)

7\51 2 5 2 5 2 5 2 164.7 329.4 494.1 658.8 823.5 988.2 1152.9
1 phi+1 1 phi+1 1 phi+1 1 164.9 329.8 494.75 659.7 824.6 989.5 1154.4
11\80 3 8 3 8 3 8 3 165 330 495 660 825 990 1155
1 e 1 e 1 e 1 165.1 330.2 495.3 660.3 825.4 990.5 1155.6 L/s=e
4\29 1 3 1 3 1 3 1 165.5 331 496.6 662.1 827.6 993.1 1158.6
1 pi 1 pi 1 pi 1 165.7 331.4 497.1 662.85 828.5 994.3 1160 L/s=pi
5\36 1 4 1 4 1 4 1 166.7 333.3 500 666.7 833.3 1000 1166.7
6\43 1 5 1 5 1 5 1 167.4 334.9 502.3 669.8 837.2 1004.65 1172.1
1\7 0 1 0 1 0 1 0 171.4 342.9 514.3 685.7 857.1 1028.6 1200