Methods and apparatus for identifying a digital audio signal
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United States of America Patent
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Jun 22, 2010
Grant Date -
Oct 21, 2004
app pub date -
Oct 9, 2002
filing date -
Jan 8, 2002
priority date (Note) -
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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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