4L 13s

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↖ 3L 12s↑ 4L 12s 5L 12s ↗
← 3L 13s4L 13s5L 13s →
↙ 3L 14s↓ 4L 14s 5L 14s ↘
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│║│││║│││║│││║│││││
│││││││││││││││││││
└┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┘
Scale structure
Step pattern LsssLsssLsssLssss
ssssLsssLsssLsssL
Equave 2/1 (1200.0¢)
Period 2/1 (1200.0¢)
Generator size
Bright 4\17 to 1\4 (282.4¢ to 300.0¢)
Dark 3\4 to 13\17 (900.0¢ to 917.6¢)
TAMNAMS information
Descends from 4L 5s (gramitonic)
Ancestor's step ratio range 3:1 to 1:0 (hard)
Related MOS scales
Parent 4L 9s
Sister 13L 4s
Daughters 17L 4s, 4L 17s
Neutralized 8L 9s
2-Flought 21L 13s, 4L 30s
Equal tunings
Equalized (L:s = 1:1) 4\17 (282.4¢)
Supersoft (L:s = 4:3) 13\55 (283.6¢)
Soft (L:s = 3:2) 9\38 (284.2¢)
Semisoft (L:s = 5:3) 14\59 (284.7¢)
Basic (L:s = 2:1) 5\21 (285.7¢)
Semihard (L:s = 5:2) 11\46 (287.0¢)
Hard (L:s = 3:1) 6\25 (288.0¢)
Superhard (L:s = 4:1) 7\29 (289.7¢)
Collapsed (L:s = 1:0) 1\4 (300.0¢)

4L 13s is a 2/1-equivalent (octave-equivalent) moment of symmetry scale containing 4 large steps and 13 small steps, repeating every octave. 4L 13s is a grandchild scale of 4L 5s, expanding it by 8 tones. Generators that produce this scale range from 282.4¢ to 300¢, or from 900¢ to 917.6¢.

Modes

Modes of 4L 13s
UDP Cyclic
Order
Step
Pattern
16|0 1 LsssLsssLsssLssss
15|1 5 LsssLsssLssssLsss
14|2 9 LsssLssssLsssLsss
13|3 13 LssssLsssLsssLsss
12|4 17 sLsssLsssLsssLsss
11|5 4 sLsssLsssLssssLss
10|6 8 sLsssLssssLsssLss
9|7 12 sLssssLsssLsssLss
8|8 16 ssLsssLsssLsssLss
7|9 3 ssLsssLsssLssssLs
6|10 7 ssLsssLssssLsssLs
5|11 11 ssLssssLsssLsssLs
4|12 15 sssLsssLsssLsssLs
3|13 2 sssLsssLsssLssssL
2|14 6 sssLsssLssssLsssL
1|15 10 sssLssssLsssLsssL
0|16 14 ssssLsssLsssLsssL

Scale tree

Scale Tree and Tuning Spectrum of 4L 13s
Generator(edo) Cents Step Ratio Comments
Bright Dark L:s Hardness
4\17 282.353 917.647 1:1 1.000 Equalized 4L 13s
21\89 283.146 916.854 6:5 1.200
17\72 283.333 916.667 5:4 1.250
30\127 283.465 916.535 9:7 1.286
13\55 283.636 916.364 4:3 1.333 Supersoft 4L 13s
35\148 283.784 916.216 11:8 1.375
22\93 283.871 916.129 7:5 1.400
31\131 283.969 916.031 10:7 1.429
9\38 284.211 915.789 3:2 1.500 Soft 4L 13s
32\135 284.444 915.556 11:7 1.571
23\97 284.536 915.464 8:5 1.600
37\156 284.615 915.385 13:8 1.625
14\59 284.746 915.254 5:3 1.667 Semisoft 4L 13s
33\139 284.892 915.108 12:7 1.714
19\80 285.000 915.000 7:4 1.750
24\101 285.149 914.851 9:5 1.800
5\21 285.714 914.286 2:1 2.000 Basic 4L 13s
Scales with tunings softer than this are proper
21\88 286.364 913.636 9:4 2.250
16\67 286.567 913.433 7:3 2.333
27\113 286.726 913.274 12:5 2.400
11\46 286.957 913.043 5:2 2.500 Semihard 4L 13s
28\117 287.179 912.821 13:5 2.600
17\71 287.324 912.676 8:3 2.667
23\96 287.500 912.500 11:4 2.750
6\25 288.000 912.000 3:1 3.000 Hard 4L 13s
19\79 288.608 911.392 10:3 3.333
13\54 288.889 911.111 7:2 3.500
20\83 289.157 910.843 11:3 3.667
7\29 289.655 910.345 4:1 4.000 Superhard 4L 13s
15\62 290.323 909.677 9:2 4.500
8\33 290.909 909.091 5:1 5.000
9\37 291.892 908.108 6:1 6.000
1\4 300.000 900.000 1:0 → ∞ Collapsed 4L 13s