Method of generating a footprint for an audio signal
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United States of America Patent
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Oct 1, 2013
Grant Date -
Mar 12, 2009
app pub date -
Jan 16, 2006
filing date -
Jan 21, 2005
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Abstract
Method of generating a footprint for a useful signal, wherein the useful signal represents the evolution of a spectrum comprising useful signal frequencies, for example audio frequencies, over time, which allows automatic detection of identical or similar useful signals in a cost-efficient way and where the footprint is robust against modifications of the useful signal not perceptible to human users, wherein at least one data set comprising a part of the useful signal is processed by an analyzer according to a predetermined analyzing instruction, where the analyzer outputs as a result of the processing a footprint data vector depending on and identifying the processed data set.
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