Encoding and decoding of information in audio signals
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United States of America Patent
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Mar 22, 2005
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N/A
app pub date -
Mar 22, 2007
filing date -
May 25, 1999
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Abstract
Systems and methods are provided for decoding a message symbol in an audio signal. This message symbol is represented by first and second code symbols displaced in time. Values representing the code signals are accumulated and the accumulated values are examined to detect the message symbol.
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