Interesting note on pitch and playback speed

Saturday, December 31, 2011 at 10:52AM
Robert Dawson in frequency, music

Since the frequency ratio of a semitone is close to 106%, increasing or decreasing the playback speed of a recording by 6% will shift the pitch up or down one semitone, or "half-step".

Source

Article originally appeared on The Robbie D Show - Personal website of Robert Dawson (http://robbied.squarespace.com/).