Method and device for characterizing a signal and method and device for producing an indexed signal
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United States of America Patent
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Jul 25, 2006
Grant Date -
Apr 22, 2004
app pub date -
Feb 26, 2002
filing date -
Feb 28, 2001
priority date (Note) -
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Abstract
In a method for characterizing a signal, which represents an audio content, a measure for a tonality of the signal is determined, whereupon a statement is made about the audio content of the signal based on the measure for the tonality of the signal. The measure for the tonality of the signal for the content analysis is robust against a signal distortion, such as by MP3 encoding, and has a high correlation to the content of the examined signal.
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