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Interval information
Ratio 9/1
Factorization 32
Monzo [0 2
Size in cents 3803.91¢
Name 9th harmonic
Color name c3w2, tricowa 2nd
FJS name [math]\text{M23}[/math]
Special properties harmonic
Tenney height (log2 nd) 3.16993
Weil height (log2 max(n, d)) 6.33985
Wilson height (sopfr (nd)) 6
Harmonic entropy
(Shannon, [math]\sqrt{nd}[/math])
~2.65687 bits

[sound info]
open this interval in xen-calc

9/1, the 9th harmonic, is the harmonic past 8/1 and before 10/1. It is three octaves above 9/8. In harmony, it can be approached as a stack of two 3/1's, making chords like 1-3-9.