36ed12
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← 35ed12 | 36ed12 | 37ed12 → |
36 equal divisions of the 12th harmonic (abbreviated 36ed12) is a nonoctave tuning system that divides the interval of 12/1 into 36 equal parts of about 119 ¢ each. Each step represents a frequency ratio of 121/36, or the 36th root of 12.
Interval table
Steps | Cents | Approximate ratios |
---|---|---|
0 | 0 | 1/1 |
1 | 119.5 | 15/14, 16/15, 29/27 |
2 | 239 | 8/7, 23/20 |
3 | 358.5 | 16/13, 21/17, 27/22 |
4 | 478 | 21/16, 29/22 |
5 | 597.5 | 17/12, 24/17 |
6 | 717 | |
7 | 836.5 | 13/8, 21/13 |
8 | 956 | 26/15 |
9 | 1075.5 | 13/7, 28/15 |
10 | 1195 | 2/1 |
11 | 1314.5 | 15/7 |
12 | 1434 | 16/7, 23/10 |
13 | 1553.5 | 22/9, 27/11 |
14 | 1673 | 21/8, 29/11 |
15 | 1792.5 | |
16 | 1912 | |
17 | 2031.5 | 29/9 |
18 | 2151 | |
19 | 2270.5 | 26/7 |
20 | 2390 | |
21 | 2509.5 | 17/4 |
22 | 2629 | |
23 | 2748.5 | |
24 | 2868 | 21/4 |
25 | 2987.5 | 28/5 |
26 | 3107 | 6/1 |
27 | 3226.5 | |
28 | 3346 | |
29 | 3465.5 | |
30 | 3585 | |
31 | 3704.5 | 17/2 |
32 | 3824 | |
33 | 3943.5 | |
34 | 4063 | 21/2 |
35 | 4182.5 | |
36 | 4302 | 12/1 |
Harmonics
Harmonic | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | |
---|---|---|---|---|---|---|---|---|---|---|---|---|
Error | Absolute (¢) | -5.0 | +10.0 | -10.0 | -37.8 | +5.0 | -22.9 | -15.0 | +20.0 | -42.9 | +31.1 | +0.0 |
Relative (%) | -4.2 | +8.4 | -8.4 | -31.7 | +4.2 | -19.1 | -12.6 | +16.8 | -35.9 | +26.1 | +0.0 | |
Steps (reduced) |
10 (10) |
16 (16) |
20 (20) |
23 (23) |
26 (26) |
28 (28) |
30 (30) |
32 (32) |
33 (33) |
35 (35) |
36 (0) |