57ed6
Division of the sixth harmonic into 57 equal parts (57ED6) is very nearly identical to 22 EDO, but with the 6/1 rather than the 2/1 being just. The octave is about 2.754 ¢ compressed and the step size is about 54.4203 ¢. The local zeta peak around 22 is located at 22.025147, which has a step size of 54.483 ¢ and an octave of 1198.63 ¢ (which is compressed by 1.37 ¢), making 57ed6 very close to optimal for 22edo.
Intervals
| Steps | Cents | Approximate ratios |
|---|---|---|
| 0 | 0 | 1/1 |
| 1 | 54.4 | 30/29, 31/30, 32/31, 33/32, 34/33 |
| 2 | 108.8 | 16/15, 17/16, 33/31 |
| 3 | 163.3 | 11/10, 34/31 |
| 4 | 217.7 | 17/15, 25/22 |
| 5 | 272.1 | 34/29 |
| 6 | 326.5 | 23/19, 29/24 |
| 7 | 380.9 | |
| 8 | 435.4 | 9/7 |
| 9 | 489.8 | |
| 10 | 544.2 | 26/19 |
| 11 | 598.6 | 17/12, 24/17 |
| 12 | 653 | 16/11, 19/13 |
| 13 | 707.5 | |
| 14 | 761.9 | 14/9, 31/20 |
| 15 | 816.3 | 8/5 |
| 16 | 870.7 | 33/20 |
| 17 | 925.1 | 29/17 |
| 18 | 979.6 | 30/17 |
| 19 | 1034 | 20/11, 29/16 |
| 20 | 1088.4 | 15/8 |
| 21 | 1142.8 | 29/15, 31/16 |
| 22 | 1197.2 | 2/1 |
| 23 | 1251.7 | 33/16 |
| 24 | 1306.1 | 17/8 |
| 25 | 1360.5 | 11/5 |
| 26 | 1414.9 | 34/15 |
| 27 | 1469.3 | 7/3 |
| 28 | 1523.8 | 29/12 |
| 29 | 1578.2 | |
| 30 | 1632.6 | 18/7 |
| 31 | 1687 | |
| 32 | 1741.4 | 30/11 |
| 33 | 1795.9 | 31/11 |
| 34 | 1850.3 | 32/11 |
| 35 | 1904.7 | 3/1 |
| 36 | 1959.1 | 31/10 |
| 37 | 2013.5 | 16/5 |
| 38 | 2068 | 33/10 |
| 39 | 2122.4 | 17/5 |
| 40 | 2176.8 | |
| 41 | 2231.2 | 29/8 |
| 42 | 2285.7 | 15/4 |
| 43 | 2340.1 | 27/7 |
| 44 | 2394.5 | |
| 45 | 2448.9 | 33/8 |
| 46 | 2503.3 | 17/4 |
| 47 | 2557.8 | |
| 48 | 2612.2 | |
| 49 | 2666.6 | 14/3 |
| 50 | 2721 | |
| 51 | 2775.4 | |
| 52 | 2829.9 | |
| 53 | 2884.3 | |
| 54 | 2938.7 | |
| 55 | 2993.1 | |
| 56 | 3047.5 | 29/5 |
| 57 | 3102 | 6/1 |
Harmonics
| Harmonic | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Error | Absolute (¢) | -1.5 | +1.5 | -3.0 | +33.6 | +0.0 | +15.1 | -4.6 | +3.0 | +32.1 | +8.1 | -1.5 |
| Relative (%) | -2.2 | +2.2 | -4.3 | +47.7 | +0.0 | +21.5 | -6.5 | +4.3 | +45.6 | +11.5 | -2.2 | |
| Steps (reduced) |
17 (17) |
27 (27) |
34 (34) |
40 (40) |
44 (0) |
48 (4) |
51 (7) |
54 (10) |
57 (13) |
59 (15) |
61 (17) | |
| Harmonic | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Error | Absolute (¢) | +0.9 | +13.6 | +35.2 | -6.1 | +30.0 | +1.5 | -21.6 | +30.6 | +16.6 | +6.6 | +0.1 |
| Relative (%) | +1.3 | +19.3 | +49.9 | -8.6 | +42.5 | +2.2 | -30.6 | +43.4 | +23.6 | +9.4 | +0.2 | |
| Steps (reduced) |
63 (19) |
65 (21) |
67 (23) |
68 (24) |
70 (26) |
71 (27) |
72 (28) |
74 (30) |
75 (31) |
76 (32) |
77 (33) | |