Is a
Patent attributes
Patent Jurisdiction
Patent Number
Patent Inventor Names
Venugopal Srinivasan0
Morris Lee0
Date of Patent
November 19, 2019
Patent Application Number
15667373
Date Filed
August 2, 2017
Patent Citations Received
Patent Primary Examiner
Patent abstract
Methods, apparatus, systems and articles of manufacture (e.g., physical storage media) to determine media device activation based on frequency response analysis are disclosed. Example methods disclosed herein include reusing first frequency values of audio sensed with a microphone to determine a first frequency response of the sensed audio, the first frequency values having been determined to perform watermark detection during a first monitoring time interval. Disclosed example methods also include comparing the first frequency response to a reference frequency response to determine whether the media device was active during the first monitoring time interval.
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