Patent Number: 8,878,041

Title: Detecting beat information using a diverse set of correlations

Abstract: A beat analysis module is described for determining beat information associated with an audio item. The beat analysis module uses an Expectation-Maximization (EM) approach to determine an average beat period, where correlation is performed over diverse representations of the audio item. The beat analysis module can determine the beat information in a relative short period of time. As such, the beat analysis module can perform its analysis together with another application task (such as a game application task) without disrupting the real time performance of that application task. In one application, a user may select his or her own audio items to be used in conjunction with the application task.

Inventors: Attias; Hagai T. (San Francisco, CA), Kirovski; Darko (Kirkland, WA)

Assignee: Microsoft Corporation

International Classification: G04B 13/00 (20060101)

Expiration Date: 2019-11-04 0:00:00