64/33

Interval information

Ratio	64/33
Factorization	26 × 3-1 × 11-1
Monzo	[6 -1 0 0 -1⟩
Size in cents	1146.727¢
Names	undecimal infraoctave, Alpharabian infraoctave, octave-reduced 33rd subharmonic
Color name	1u8, lu octave
FJS name	[math]\displaystyle{ \text{P8}_{11} }[/math]
Special properties	reduced, reduced subharmonic
Tenney height (log2 nd)	11.0444
Weil height (log2 max(n, d))	12
Wilson height (sopfr(nd))	26
Harmonic entropy (Shannon, [math]\displaystyle{ \sqrt{nd} }[/math])	~4.3419 bits
[sound info]
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64/33, the undecimal infraoctave, the Alpharabian infraoctave or the octave-reduced 33rd subharmonic, is an interval which differs by a keenanisma (385/384) from the septimal semidiminished octave (35/18).

See also

• 33/32 – its octave complement
• Gallery of just intervals