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Systems and methods for gathering research data

  • US 9,378,728 B2
  • Filed: 04/25/2014
  • Issued: 06/28/2016
  • Est. Priority Date: 09/27/2002
  • Status: Expired due to Term
First Claim
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1. A method to monitor presentation of media, the method comprising:

  • determining, with a processor, first frequency-domain data from time-domain audio data corresponding to the media, the first frequency-domain data including first frequency band values associated with respective first frequency bands;

    combining, with the processor, respective ones of the first frequency band values associated with contiguous groups of the first frequency bands to determine second frequency-domain data including second frequency band values associated with respective second frequency bands;

    processing, with the processor, the first frequency-domain data to obtain a code included in an audio portion of the media; and

    processing, with the processor, the second frequency-domain data to obtain a signature representative of the audio portion of the media.

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