Patent ID: 7254455

Claim:
A method, comprising: determining a period of recurring events within a recorded signal, the period of recurring events providing a measurement of a tempo of the recorded signal, said determining comprising: establishing an anchor point in the recorded signal, the anchor point being indicative of a beginning point for a period of recurring events in the recorded signal; determining a length for the period of recurring events in the recorded signal by digitally comparing a first portion of the recorded signal starting from the established anchor point with at least one different portion of the recorded signal subsequent to the anchor point, said at least one different portion extrapolated from the first portion; and refining the length for the period of recurring events by digitally comparing a pattern included by the first portion with patterns included by said at least one different portion subsequent to the anchor point, each subsequent portion having the length of the first portion; associating the tempo with the recorded signal; and using the tempo to process the recorded signal with a second recorded signal.