55/52
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Interval information |
(Shannon, [math]\displaystyle{ \sqrt{nd} }[/math])
55/52 is a 13-limit semitone measuring roughly 97.1 cents.
It arises in 13-limit just intonation as the difference between 13/11 and 5/4, the difference between 13/10 and 11/8 (and so it appears as a whole interval in jacobin chords), and the difference between 13/8 and 55/32.
It differs from the 18/17 semitone by 936/935 – an unnoticeable comma measuring about 1.85 cents.
This interval may act as a type of chroma when not equated with other intervals, due to separating two interval qualities.