User:MisterShafXen/30ed7
| ← 29ed7 | 30ed7 | 31ed7 → |
30 equal divisions of the 7th harmonic (abbreviated 30ed7) is a nonoctave tuning system that divides the interval of 7/1 into 30 equal parts of about 112 ¢ each. Each step represents a frequency ratio of 71/30, or the 30th root of 7.
Intervals
| Steps | Cents | Approximate ratios |
|---|---|---|
| 0 | 0 | 1/1 |
| 1 | 112.3 | 15/14 |
| 2 | 224.6 | 17/15, 25/22 |
| 3 | 336.9 | 17/14, 23/19 |
| 4 | 449.2 | 13/10, 22/17 |
| 5 | 561.5 | 18/13, 25/18 |
| 6 | 673.8 | 25/17 |
| 7 | 786.1 | 11/7 |
| 8 | 898.4 | |
| 9 | 1010.6 | 9/5, 25/14 |
| 10 | 1122.9 | 21/11, 25/13 |
| 11 | 1235.2 | |
| 12 | 1347.5 | 13/6 |
| 13 | 1459.8 | 7/3 |
| 14 | 1572.1 | |
| 15 | 1684.4 | |
| 16 | 1796.7 | 17/6 |
| 17 | 1909 | 3/1 |
| 18 | 2021.3 | |
| 19 | 2133.6 | |
| 20 | 2245.9 | 11/3 |
| 21 | 2358.2 | |
| 22 | 2470.5 | 25/6 |
| 23 | 2582.8 | |
| 24 | 2695.1 | |
| 25 | 2807.4 | |
| 26 | 2919.6 | 27/5 |
| 27 | 3031.9 | |
| 28 | 3144.2 | |
| 29 | 3256.5 | |
| 30 | 3368.8 | 7/1 |