Data processing: speech signal processing – linguistics – language – Speech signal processing – Application
Reexamination Certificate
2004-10-21
2009-12-01
Chawan, Vijay B (Department: 2626)
Data processing: speech signal processing, linguistics, language
Speech signal processing
Application
C704S217000, C704S257000, C704S224000, C704S270000, C341S155000, C341S110000, C341S114000, C348S515000, C348S464000, C348S500000
Reexamination Certificate
active
07627477
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 (230) of fingerprint objects (231,232), each occurring at a particular location (242), is generated for each audio sample (210). Each location (242) is determined in dependence upon the content of the respective audio sample (210) and each fingerprint object (232) characterizes one or more local features (222) at or near the respective particular location (242). 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.
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Culbert Daniel
Li-Chun Wang Avery
Chawan Vijay B
Landmark Digital Services LLC
Woodcock & Washburn LLP
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