5afdo
5ado is the arithmetic equal division of the octave into four parts of 1/5 each. As 5 is an odd number, this ADO does not contain a perfect fifth or any reasonable approximation to it.
Intervals
| # | Cents | Ratio | Interval name |
|---|---|---|---|
| 0 | 0 | 1/1 | perfect unison |
| 1 | 315.6 | 6/5 | just minor third |
| 2 | 582.5 | 7/5 | narrow tritone |
| 3 | 813.7 | 8/5 | just minor sixth |
| 4 | 1017.6 | 9/5 | just minor seventh |
| 5 | 1200.0 | 2/1 | perfect octave |