OD
An OD, or otonal division, is a kind of arithmetic and monotonic tuning.
overtone mode, or over-n scale (equivalent to n-ODO)
n-ODp: n otonal divisions of interval p
An OD is a specific (rational) type of EFD.
| quantity | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 |
|---|---|---|---|---|---|---|---|---|---|
| frequency | 1/1 | 5/4 | 3/2 | 7/4 | 2/1 | 5/2 | 3/1 | 7/2 | 4/1 |
| pitch | 0.00 | 0.32 | 0.58 | 0.81 | 1.00 | 1.32 | 1.58 | 1.81 | 2.00 |
| length | 1/1 | 4/5 | 2/3 | 4/7 | 1/2 | 2/5 | 1/3 | 2/7 | 1/4 |