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Method and apparatus for identifying a digital audio dignal

  • US 20040210922A1
  • Filed: 04/12/2004
  • Published: 10/21/2004
  • Est. Priority Date: 01/08/2002
  • Status: Active Grant
First Claim
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1. Apparatus for identifying a digital audio signal, comprising:

  • an input which receives the digital audio signal; and

    structure configured to (i) identify a program-identifying code in the received digital audio signal, (ii) identify a program-identifying code in a decompressed or uncompressed received digital audio signal, (iii) identify a feature signature in the received digital audio signal, and (iv) identify a feature signature in the decompressed or uncompressed received digital audio signal.

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