Notation
Step ratio
Gamut
2:1 (11edo)
J , J&/K@, K , L , L&/M@, M , N , N&/O@, O , P , P&/J@, J
3:1 (15edo)
J , K@, J&, K , L , M@, L&, M , N , O@, N&, O , P , J@, P&, J
3:2 (18edo)
J , J&, K@, K , K&/L@, L , L&, M@, M , M&/N@, N , N&, O@, O , O&/P@, P , P&, J@, J
Tunings
Simple tunings
Scale degree of 4L 3s
Scale degree
11edo (Basic, L:s = 2:1)
Approx. JI Ratios
Steps
Cents
Perfect 0-smidegree (unison)
0
0
1/1 (exact)
Minor 1-smidegree
1
109.1
Major 1-smidegree
2
218.2
Perfect 2-smidegree
3
327.3
Augmented 2-smidegree
4
436.4
Minor 3-smidegree
4
436.4
Major 3-smidegree
5
545.5
Minor 4-smidegree
6
654.5
Major 4-smidegree
7
763.6
Diminished 5-smidegree
7
763.6
Perfect 5-smidegree
8
872.7
Minor 6-smidegree
9
981.8
Major 6-smidegree
10
1090.9
Perfect 7-smidegree (octave)
11
1200
2/1 (exact)
Scale degree of 4L 3s
Scale degree
15edo (Hard, L:s = 3:1)
Approx. JI Ratios
Steps
Cents
Perfect 0-smidegree (unison)
0
0
1/1 (exact)
Minor 1-smidegree
1
80
Major 1-smidegree
3
240
Perfect 2-smidegree
4
320
Augmented 2-smidegree
6
480
Minor 3-smidegree
5
400
Major 3-smidegree
7
560
Minor 4-smidegree
8
640
Major 4-smidegree
10
800
Diminished 5-smidegree
9
720
Perfect 5-smidegree
11
880
Minor 6-smidegree
12
960
Major 6-smidegree
14
1120
Perfect 7-smidegree (octave)
15
1200
2/1 (exact)
Scale degree of 4L 3s
Scale degree
18edo (Soft, L:s = 3:2)
Approx. JI Ratios
Steps
Cents
Perfect 0-smidegree (unison)
0
0
1/1 (exact)
Minor 1-smidegree
2
133.3
Major 1-smidegree
3
200
Perfect 2-smidegree
5
333.3
Augmented 2-smidegree
6
400
Minor 3-smidegree
7
466.7
Major 3-smidegree
8
533.3
Minor 4-smidegree
10
666.7
Major 4-smidegree
11
733.3
Diminished 5-smidegree
12
800
Perfect 5-smidegree
13
866.7
Minor 6-smidegree
15
1000
Major 6-smidegree
16
1066.7
Perfect 7-smidegree (octave)
18
1200
2/1 (exact)
Proposed table output for MOS degrees template
Degree
Note name on J
2/1 step ratio (11edo)
3/1 step ratio (15edo)
3/2 step ratio (18edo)
Steps
Cents
Steps
Cents
Steps
Cents
Perf. unison
J
0
0¢
0
0¢
0
0¢
Aug. unison
J&
1
109.1¢
2
160¢
1
66.7¢
Min. 1-smidegree
K@
1
109.1¢
1
80¢
2
133.3¢
. . .
Dim. octave
J@
10
1090.9¢
13
1040¢
17
1133.3¢
Perf. octave
J
11
1200¢
15
1200¢
18
1200¢
Supersoft
Semisoft
Semihard
Superhard
Modes
Modes of 4L 3s
UDP
Cyclic order
Step pattern
6|0
1
LLsLsLs
5|1
6
LsLLsLs
4|2
4
LsLsLLs
3|3
2
LsLsLsL
2|4
7
sLLsLsL
1|5
5
sLsLLsL
0|6
3
sLsLsLL
Tuning spectrum