3L 1s

← 2L 1s	3L 1s	4L 1s →
↙ 2L 2s	↓ 3L 2s	4L 2s ↘

┌╥╥╥┬┐ │║║║││ ││││││ └┴┴┴┴┘
Scale structure
Step pattern	LLLs sLLL
Equave	2/1 (1200.0 ¢)
Period	2/1 (1200.0 ¢)
Generator size
Bright	1\4 to 1\3 (300.0 ¢ to 400.0 ¢)
Dark	2\3 to 3\4 (800.0 ¢ to 900.0 ¢)
Related MOS scales
Parent	1L 2s
Sister	1L 3s
Daughters	4L 3s, 3L 4s
Neutralized	2L 2s
2-Flought	7L 1s, 3L 5s
Equal tunings
Equalized (L:s = 1:1)	1\4 (300.0 ¢)
Supersoft (L:s = 4:3)	4\15 (320.0 ¢)
Soft (L:s = 3:2)	3\11 (327.3 ¢)
Semisoft (L:s = 5:3)	5\18 (333.3 ¢)
Basic (L:s = 2:1)	2\7 (342.9 ¢)
Semihard (L:s = 5:2)	5\17 (352.9 ¢)
Hard (L:s = 3:1)	3\10 (360.0 ¢)
Superhard (L:s = 4:1)	4\13 (369.2 ¢)
Collapsed (L:s = 1:0)	1\3 (400.0 ¢)

3L 1s is a 2/1-equivalent (octave-equivalent) moment of symmetry scale containing 3 large steps and 1 small step, repeating every octave. Generators that produce this scale range from 300 ¢ to 400 ¢, or from 800 ¢ to 900 ¢. Scales of this form are always proper because there is only one small step.

Modes

• 3|0 LLLs
• 2|1 LLsL
• 1|2 LsLL
• 0|3 sLLL

Scale tree

Generator ranges:

• Chroma-positive generator: 300 cents (1\4) to 400 cents (1\3)
• Chroma-negative generator: 800 cents (2\3) to 900 cents (3\4)