The nonary comma is a medium 7-limit comma which is the difference between 27/25 raised by eight octaves and ten 7/4s, as 28(27/25)/(7/4)10 = 7247757312/7061881225. Tempering it out leads to the nonary family of temperaments.
| Ratio
|
7247757312/7061881225
|
| Factorization
|
228 × 33 × 5-2 × 7-10
|
| Monzo
|
[28 3 -2 -10⟩
|
| Size in cents
|
44.97851¢
|
| Name
|
nonary comma
|
| FJS name
|
[math]\displaystyle{ \text{dd}{-4}_{5,5,7,7,7,7,7,7,7,7,7,7} }[/math]
|
| Special properties
|
reduced
|
| Tenney norm (log2 nd)
|
65.4723
|
| Weil norm (log2 max(n, d))
|
65.5098
|
| Wilson norm (sopfr(nd))
|
145
|
| Comma size
|
medium
|
| Open this interval in xen-calc
|