Methods and apparatus for identifying a digital audio signal

Telecommunications – Audience survey or program distribution use accounting

Reexamination Certificate

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C455S003060, C455S418000, C725S009000, C725S018000, C725S019000

Reexamination Certificate

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07742737

ABSTRACT:
Method and apparatus for identifying broadcast digital audio signals include structure and/or function whereby the digital audio signal is provided to processing structure which is configured to (i) identify a program-identifying code in the received digital audio signal, (ii) identify a program-identifying code in a decompressed received digital audio signal, (iii) identify a feature signature in the received digital audio signal, and (iv) identify a feature signature in the decompressed received digital audio signal. Preferably, such processing structure is disposed in a dwelling or a monitoring site in an audience measurement system, such as the Nielsen TV ratings system.

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