Detection of entropy in connection with audio signals
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United States of America Patent
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Dec 16, 2008
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N/A
app pub date -
Apr 21, 2000
filing date -
Apr 21, 2000
priority date (Note) -
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Abstract
An encoder calculates an entropy of at least a portion of a signal and encodes the signal with the calculated entropy. A decoder decodes the signal in order to recover the encoded entropy. The decoder may also determine an entropy of the signal and may compare the entropy that it determines to the decoded entropy. The decoder detects compression/decompression based upon results from the comparison, and/or the decoder prevents use of a device based upon results from the comparison.
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