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Problem 379. Chromatic Tuner

Created by @bmtran

Given a frequency, return the number of cents difference between the given frequency and its nearest semitone (in 12-tone equal temperament with A440) as well as the semitone it is closest to (in scientific pitch notation, using # for sharp and using natural pitches whenever possible) with A440 referring to A4. Refer to the wikipedia articles below for more information.

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9 correct solutions 16 incorrect solutions
Last solution submitted on Mar 12, 2013

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