User:MisterShafXen/15ed9
| ← 13ed9 | 15ed9 | 17ed9 → |
15 equal divisions of the 9th harmonic (abbreviated 15ed9) is a nonoctave tuning system that divides the interval of 9/1 into 15 equal parts of about 254 ¢ each. Each step represents a frequency ratio of 91/15, or the 15th root of 9.