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Systems and methods for gathering audience measurement data

  • US 9,100,132 B2
  • Filed: 11/03/2009
  • Issued: 08/04/2015
  • Est. Priority Date: 07/26/2002
  • Status: Active Grant
First Claim
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1. A method for adding information to audio, the method comprising:

  • accessing an audio signal segment in a processing device capable of reproducing the audio as sound, the audio signal segment including first audience measurement data embedded into the audio signal segment;

    embedding second audience measurement data in the audio signal segment in the processing device, the second audience measurement data being different from the first audience measurement data, and the first audience measurement data and second audience measurement data exist simultaneously existing in the audio signal segment simultaneously; and

    transmitting the audio signal segment for reproduction.

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