2L 20s

Revision as of 06:32, 22 February 2024 by Ganaram inukshuk (talk | contribs) (Mos intro, infobox mos)

2L 20s is a 2/1-equivalent (octave-equivalent) moment of symmetry scale containing 2 large steps and 20 small steps, with a period of 1 large step and 10 small steps that repeats every 600.0 ¢, or twice every octave. 2L 20s is related to 2L 8s, expanding it by 12 tones. Generators that produce this scale range from 545.5 ¢ to 600 ¢, or from 0 ¢ to 54.5 ¢. Its generator is no larger than the 'diatonic' quarter tone 1/22edo (54.5455 cents) and it is the quarter tone scale of Shrutar temperament.

↖ 1L 19s ↑ 2L 19s 3L 19s ↗
← 1L 20s 2L 20s 3L 20s →
↙ 1L 21s ↓ 2L 21s 3L 21s ↘
Scale structure
Step pattern LssssssssssLssssssssss
ssssssssssLssssssssssL
Equave 2/1 (1200.0 ¢)
Period 1\2 (600.0 ¢)
Generator size
Bright 10\22 to 1\2 (545.5 ¢ to 600.0 ¢)
Dark 0\2 to 1\22 (0.0 ¢ to 54.5 ¢)
TAMNAMS information
Related to 2L 8s (jaric)
With tunings 7:1 to 1:0
Related MOS scales
Parent 2L 18s
Sister 20L 2s
Daughters 22L 2s, 2L 22s
Neutralized 4L 18s
2-Flought 24L 20s, 2L 42s
Equal tunings
Equalized (L:s = 1:1) 10\22 (545.5 ¢)
Supersoft (L:s = 4:3) 31\68 (547.1 ¢)
Soft (L:s = 3:2) 21\46 (547.8 ¢)
Semisoft (L:s = 5:3) 32\70 (548.6 ¢)
Basic (L:s = 2:1) 11\24 (550.0 ¢)
Semihard (L:s = 5:2) 23\50 (552.0 ¢)
Hard (L:s = 3:1) 12\26 (553.8 ¢)
Superhard (L:s = 4:1) 13\28 (557.1 ¢)
Collapsed (L:s = 1:0) 1\2 (600.0 ¢)
ViewTalkEdit
1/22 54.5455
7/156 53.846
6/134 53.731
5/112 53.571
4/90 53.333
3/68 52.941
5/114 52.632
2/46 52.174
600/(10+pi/2)
5/116 51.724
600/(10+phi)
3/70 51.429
600/(10+sqrt(3))
4/94 51.064
1/24 50
5/122 49.18
4/98 48.98
3/74 48.649
2/50 48
600/(11+phi)
3/76 47.368
600/(10+e)
1/26 46.154
600/(10+pi)
3/80 45
2/54 44.444
3/82 43.902
1/28 42.857
2/58 41.379
1/30 40
3/92 39.13
2/62 38.71
1/32 37.5
1/34 35.294
1/36 66.667
0/2 0