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:
Dec. 01, 2009
Filed:
Oct. 21, 2004
Avery Li-chun Wang, Palo Alto, CA (US);
Daniel Culbert, Sunnyvale, CA (US);
Avery Li-Chun Wang, Palo Alto, CA (US);
Daniel Culbert, Sunnyvale, CA (US);
Landmark Digital Services, LLC, Nashville, TN (US);
Abstract
The present invention provides an innovative technique for rapidly and accurately determining whether two audio samples match, as well as being immune to various kinds of transformations, such as playback speed variation. The relationship between the two audio samples is characterized by first matching certain fingerprint objects derived from the respective samples. A set () of fingerprint objects (), each occurring at a particular location (), is generated for each audio sample (). Each location () is determined in dependence upon the content of the respective audio sample () and each fingerprint object () characterizes one or more local features () at or near the respective particular location (). A relative value is next determined for each pair of matched fingerprint objects. A histogram of the relative values is then generated. If a statistically significant peak is found, the two audio samples can be characterized as substantially matching.