| Prime factorization
|
7 (prime)
|
| Dual sharp fifth
|
11/7 (782.492c)
|
| Dual flat fifth
|
10/7 (617.487c)
|
7afdo (arithmetic frequency division of the octave), or 7odo (otonal division of the octave), divides the octave into seven parts of 1/7 each. It is a superset of 6afdo and a subset of 8afdo. As a scale it may be known as mode 7 of the harmonic series or the Over-7 scale. As 7 is a small odd number, 7afdo does not contain a perfect fifth or any reasonable approximation to one in its root position. This makes 7afdo relatively poor for its size at creating traditional tonal music unless rotated.
Intervals
Scala files