25/18
Jump to navigation
Jump to search
Ratio
25/18
Factorization
2-1 × 3-2 × 52
Monzo
[-1 -2 2⟩
Size in cents
568.7174¢
Names
classic(al) augmented fourth,
diptolemaic augmented fourth
Color name
yy4, yoyo 4th
FJS name
[math]\text{A4}^{5,5}[/math]
Special properties
reduced
Tenney height (log2 nd)
8.81378
Weil height (log2 max(n, d))
9.28771
Wilson height (sopfr(nd))
18
Harmonic entropy
(Shannon, [math]\sqrt{nd}[/math])
~4.21062 bits
[sound info]
open this interval in xen-calc
| Interval information |
diptolemaic augmented fourth
(Shannon, [math]\sqrt{nd}[/math])
[sound info]
25/18, the classic(al) augmented fourth or diptolemaic augmented fourth, is a 5-limit tritone. It is the interval between 6/5 and 5/3 or 9/5 and 5/2 respectively. It is 325/324 (5.3 cents) sharp of 18/13