3L 3s

Revision as of 10:11, 3 March 2022 by FloraC (talk | contribs) (New scale tree)

The true MOS is LsLsLs but interesting near-MOSs include LLsLss and LLssLs. The MOS is always proper but the other forms are only proper if the generator is larger than 1\9 of an octave (so not augmented).

↖ 2L 2s ↑ 3L 2s 4L 2s ↗
← 2L 3s 3L 3s 4L 3s →
↙ 2L 4s ↓ 3L 4s 4L 4s ↘
Scale structure
Step pattern LsLsLs
sLsLsL
Equave 2/1 (1200.0 ¢)
Period 1\3 (400.0 ¢)
Generator size
Bright 1\6 to 1\3 (200.0 ¢ to 400.0 ¢)
Dark 0\3 to 1\6 (0.0 ¢ to 200.0 ¢)
TAMNAMS information
Name triwood
Prefix triwd-
Abbrev. tw
Related MOS scales
Parent none
Sister 3L 3s (self)
Daughters 6L 3s, 3L 6s
Neutralized 6edo
2-Flought 9L 3s, 3L 9s
Equal tunings
Equalized (L:s = 1:1) 1\6 (200.0 ¢)
Supersoft (L:s = 4:3) 4\21 (228.6 ¢)
Soft (L:s = 3:2) 3\15 (240.0 ¢)
Semisoft (L:s = 5:3) 5\24 (250.0 ¢)
Basic (L:s = 2:1) 2\9 (266.7 ¢)
Semihard (L:s = 5:2) 5\21 (285.7 ¢)
Hard (L:s = 3:1) 3\12 (300.0 ¢)
Superhard (L:s = 4:1) 4\15 (320.0 ¢)
Collapsed (L:s = 1:0) 1\3 (400.0 ¢)
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Out of all proper six-note MOS scales, this augmented scale probably has the lowest harmonic entropy.

Scale tree

Generator Cents L s L/s Comments
Chroma-positive Chroma-negative
1\6 200.000 200.000 1 1 1.000
6\33 218.182 181.818 6 5 1.200
5\27 222.222 177.778 5 4 1.250
9\48 225.000 175.000 9 7 1.286 Oodako
4\21 228.571 171.429 4 3 1.333
11\57 231.579 168.421 11 8 1.375
7\36 233.333 166.667 7 5 1.400
10\51 235.294 164.706 10 7 1.428
3\15 240.000 160.000 3 2 1.500 L/s = 3/2
11\54 244.444 155.556 11 7 1.571
8\39 246.154 153.846 8 5 1.600 Triforce
13\63 247.619 152.381 13 8 1.625 Unnamed golden tuning
Trug (optimal around here)
5\24 250.000 150.000 5 3 1.667
12\57 252.632 147.368 12 7 1.714
7\33 254.545 145.455 7 4 1.750
9\42 257.143 142.857 9 5 1.800
2\9 266.667 133.333 2 1 2.000 Basic 3L 3s
9\39 276.923 123.077 9 4 2.250
7\30 280.000 120.000 7 3 2.333 Deflated (optimal around here)
12\51 282.353 117.647 12 5 2.400
5\21 285.714 114.286 5 2 2.500
13\54 288.889 111.111 13 5 2.600 Unnamed golden tuning
8\33 290.909 109.091 8 3 2.667
11\45 293.333 106.667 11 4 2.750 August
3\12 300.000 100.000 3 1 3.000 L/s = 3/1
10\39 307.692 92.308 10 3 3.333 Augene
7\27 311.111 88.889 7 2 3.500
11\42 314.286 85.714 11 3 3.667
4\15 320.000 80.000 4 1 4.000 Inflated
9\33 327.273 72.727 9 2 4.500
5\18 333.333 66.667 5 1 5.000
6\21 342.857 57.143 6 1 6.000 Hemiug↓, hemiaug↓
1\3 400.000 0.000 1 0 → inf