Is a
Patent attributes
Patent Applicant
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Ravi K. Sharma6
Shankar Thagadur Shivappa6
Ajith Kamath6
Brett A. Bradley6
David A. Cushman6
Date of Patent
April 5, 2016
Patent Application Number
14054492
Date Filed
October 15, 2013
Patent Citations Received
Patent Primary Examiner
Patent abstract
Audio watermark encoding methods employ reversing polarity and pairwise embedding. A watermark signal is generated, mapped to pairs of embedding locations and inserted in the members of the pair with reverse polarity. The pairs of embedding locations correspond to adjacent regions or frames in time or frequency domains. A method for controlling an audio output device captures audio from the device, extracts its identity from a watermark, and modifies the operation of the device, e.g. varying watermark strength or audio loudness.
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