A musical ratio of 9:4.
See Also
12.07 - Keelys Thirds Sixths and Ninths
7.18 - Ninth
Interval
major
Major Scale
Major Second
Major Seventh
Major Sixth
Major Third
ninths
Part 14 - Keelys Mysterious Thirds Sixths and Ninths
Ponds Original Notes on the Scale of Infinite Ninths
Table 14.06 - All phrases occuring in HyperVibes containing the term ninths