The prominent tempo of an audio data is determined by detecting a plurality of beat rates of the audio data. One or more audio data characteristics are used to filter through the beat rates to determine the prominent tempo. Systems, methods, and apparatuses to determine the prominent tempo are discussed...http://www.google.de/patents/US8071869?utm_source=gb-gplus-sharePatent US8071869 - Apparatus and method for determining a prominent tempo of an audio work
