The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 27, 2007
Filed:
Apr. 01, 2004
Guy W. W. Mcnally, Los Altos, CA (US);
Christopher J. Zamara, Gilroy, CA (US);
Charmine S. Tung, Sunnyvale, CA (US);
Guy W. W. McNally, Los Altos, CA (US);
Christopher J. Zamara, Gilroy, CA (US);
Charmine S. Tung, Sunnyvale, CA (US);
Pinnacle Systems, Inc., Mountian View, CA (US);
Abstract
Methods and systems for detecting a fundamental beat frequency in a predetermined time interval of a music signal are disclosed. The frequency may be detected by processing a music signal with the discrete wavelet transform to obtain a set of coefficients. A subset of the coefficients may be processed to obtain a plurality of candidate beat frequencies contained in the corresponding portion of the music signal. Harmonic relationships between the candidate beat frequencies may be determined, and the fundamental beat frequency may then be determined based upon the determined harmonic relationships.