2L 21s

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↖ 1L 20s↑ 2L 20s 3L 20s ↗
← 1L 21s2L 21s3L 21s →
↙ 1L 22s↓ 2L 22s 3L 22s ↘
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└┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┴┘
Scale structure
Step pattern LssssssssssLsssssssssss
sssssssssssLssssssssssL
Equave 2/1 (1200.0¢)
Period 2/1 (1200.0¢)
Generator size
Bright 11\23 to 1\2 (573.9¢ to 600.0¢)
Dark 1\2 to 12\23 (600.0¢ to 626.1¢)
TAMNAMS information
Descends from 2L 7s (balzano)
Ancestor's step ratio range 8:1 to 1:0
Related MOS scales
Parent 2L 19s
Sister 21L 2s
Daughters 23L 2s, 2L 23s
Neutralized 4L 19s
2-Flought 25L 21s, 2L 44s
Equal tunings
Equalized (L:s = 1:1) 11\23 (573.9¢)
Supersoft (L:s = 4:3) 34\71 (574.6¢)
Soft (L:s = 3:2) 23\48 (575.0¢)
Semisoft (L:s = 5:3) 35\73 (575.3¢)
Basic (L:s = 2:1) 12\25 (576.0¢)
Semihard (L:s = 5:2) 25\52 (576.9¢)
Hard (L:s = 3:1) 13\27 (577.8¢)
Superhard (L:s = 4:1) 14\29 (579.3¢)
Collapsed (L:s = 1:0) 1\2 (600.0¢)

2L 21s is a 2/1-equivalent (octave-equivalent) moment of symmetry scale containing 2 large steps and 21 small steps, repeating every octave. 2L 21s is related to 2L 7s, expanding it by 14 tones. Generators that produce this scale range from 573.9¢ to 600¢, or from 600¢ to 626.1¢.

Modes

Modes of 2L 21s
UDP Cyclic
order
Step
pattern
22|0 1 LssssssssssLsssssssssss
21|1 12 LsssssssssssLssssssssss
20|2 23 sLssssssssssLssssssssss
19|3 11 sLsssssssssssLsssssssss
18|4 22 ssLssssssssssLsssssssss
17|5 10 ssLsssssssssssLssssssss
16|6 21 sssLssssssssssLssssssss
15|7 9 sssLsssssssssssLsssssss
14|8 20 ssssLssssssssssLsssssss
13|9 8 ssssLsssssssssssLssssss
12|10 19 sssssLssssssssssLssssss
11|11 7 sssssLsssssssssssLsssss
10|12 18 ssssssLssssssssssLsssss
9|13 6 ssssssLsssssssssssLssss
8|14 17 sssssssLssssssssssLssss
7|15 5 sssssssLsssssssssssLsss
6|16 16 ssssssssLssssssssssLsss
5|17 4 ssssssssLsssssssssssLss
4|18 15 sssssssssLssssssssssLss
3|19 3 sssssssssLsssssssssssLs
2|20 14 ssssssssssLssssssssssLs
1|21 2 ssssssssssLsssssssssssL
0|22 13 sssssssssssLssssssssssL

Scale tree

Scale Tree and Tuning Spectrum of 2L 21s
Generator(edo) Cents Step ratio Comments
Bright Dark L:s Hardness
11\23 573.913 626.087 1:1 1.000 Equalized 2L 21s
56\117 574.359 625.641 6:5 1.200
45\94 574.468 625.532 5:4 1.250
79\165 574.545 625.455 9:7 1.286
34\71 574.648 625.352 4:3 1.333 Supersoft 2L 21s
91\190 574.737 625.263 11:8 1.375
57\119 574.790 625.210 7:5 1.400
80\167 574.850 625.150 10:7 1.429
23\48 575.000 625.000 3:2 1.500 Soft 2L 21s
81\169 575.148 624.852 11:7 1.571
58\121 575.207 624.793 8:5 1.600
93\194 575.258 624.742 13:8 1.625
35\73 575.342 624.658 5:3 1.667 Semisoft 2L 21s
82\171 575.439 624.561 12:7 1.714
47\98 575.510 624.490 7:4 1.750
59\123 575.610 624.390 9:5 1.800
12\25 576.000 624.000 2:1 2.000 Basic 2L 21s
Scales with tunings softer than this are proper
49\102 576.471 623.529 9:4 2.250
37\77 576.623 623.377 7:3 2.333
62\129 576.744 623.256 12:5 2.400
25\52 576.923 623.077 5:2 2.500 Semihard 2L 21s
63\131 577.099 622.901 13:5 2.600
38\79 577.215 622.785 8:3 2.667
51\106 577.358 622.642 11:4 2.750
13\27 577.778 622.222 3:1 3.000 Hard 2L 21s
40\83 578.313 621.687 10:3 3.333
27\56 578.571 621.429 7:2 3.500
41\85 578.824 621.176 11:3 3.667
14\29 579.310 620.690 4:1 4.000 Superhard 2L 21s
29\60 580.000 620.000 9:2 4.500
15\31 580.645 619.355 5:1 5.000
16\33 581.818 618.182 6:1 6.000
1\2 600.000 600.000 1:0 → ∞ Collapsed 2L 21s