4L 1s

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← 3L 1s 4L 1s 5L 1s →
↙ 3L 2s ↓ 4L 2s 5L 2s ↘
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│║║║║││
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└┴┴┴┴┴┘
Scale structure
Step pattern LLLLs
sLLLL
Equave 2/1 (1200.0¢)
Period 2/1 (1200.0¢)
Generator size
Bright 1\5 to 1\4 (240.0¢ to 300.0¢)
Dark 3\4 to 4\5 (900.0¢ to 960.0¢)
Related MOS scales
Parent 1L 3s
Sister 1L 4s
Daughters 5L 4s, 4L 5s
Neutralized 3L 2s
2-Flought 9L 1s, 4L 6s
Equal tunings
Equalized (L:s = 1:1) 1\5 (240.0¢)
Supersoft (L:s = 4:3) 4\19 (252.6¢)
Soft (L:s = 3:2) 3\14 (257.1¢)
Semisoft (L:s = 5:3) 5\23 (260.9¢)
Basic (L:s = 2:1) 2\9 (266.7¢)
Semihard (L:s = 5:2) 5\22 (272.7¢)
Hard (L:s = 3:1) 3\13 (276.9¢)
Superhard (L:s = 4:1) 4\17 (282.4¢)
Collapsed (L:s = 1:0) 1\4 (300.0¢)

4L 1s is a 2/1-equivalent (octave-equivalent) moment of symmetry scale containing 4 large steps and 1 small step, repeating every octave. Generators that produce this scale range from 240¢ to 300¢, or from 900¢ to 960¢. Scales of this form are always proper because there is only one small step. The scale with the lowest harmonic entropy for this MOS pattern is semaphore, in which two generators make a 4/3. The other interesting scale is orwell, in which the generator is approximately 7/6 and three of them make an 8/5.

Names

The TAMNAMS system uses the name manual, a name that is thematically inspired by the Latin word "manus".

Modes

Modes of 4L 1s can be named systematically either with modal UDP notation, rotational order (with 1 being the brightest mode) or the step pattern.

Scale degrees of the modes of 4L 1s 
UDP Cyclic
order
Step
pattern
Scale degree (mosdegree)
0 1 2 3 4 5
4|0 1 LLLLs Perf. Perf. Maj. Maj. Aug. Perf.
3|1 2 LLLsL Perf. Perf. Maj. Maj. Perf. Perf.
2|2 3 LLsLL Perf. Perf. Maj. Min. Perf. Perf.
1|3 4 LsLLL Perf. Perf. Min. Min. Perf. Perf.
0|4 5 sLLLL Perf. Dim. Min. Min. Perf. Perf.

Proposed Names

Additionally, cellularAutomaton has proposed names based on Latin names for fingers of the hand for increased distinctiveness and memorability.

Modes names of 4L 1s
UDP Step pattern cellularAutomaton's names
0 LLLLs Minimal
1 LLLsL Medicinal
2 LLsLL Medial
3 LsLLL Indical
4 sLLLL Pollical

Scale Tree

Generator ranges:

  • Chroma-positive generator: 240 cents (1\5) to 300 cents (1\4)
  • Chroma-negative generator: 900 cents (3\4) to 960 cents (4\5)
Generator Cents s L-s Comments
1\5 240 240 0
6\29 248.28 206.9 41.38
5\24 250 200 50 Semaphore is around here
4\19 252.63 189.47 63.16
3\14 257.14 171.43 85.71
258.81 164.76 92.05
8\37 259.46 162.16 97.3
1200/(3+phi) 160.6 99.25 Golden bug / golden superpelog
5\23 260.87 156.52 104.35
262.16 151.36 110.8
2\9 266.67 133.33 133.33 Optimum rank range (L/s=2/1) bug
7\31 270.97 116.13 154.84
12\53 271.70 113.21 158.49 Orwell is around here
5\22 272.73 109.09 163.64
274.73 101.07 173.66 L/s = e
3\13 276.92 92.31 184.62 L/s = 3
277.89 88.45 189.43 L/s = pi
4\17 282.35 70.59 211.76 L/s = 4
5\21 285.71 57.14 228.57
6\25 288 48 240
1\4 300 0 300

References