Method and device for characterising a signal and

专利名称：Method and device for characterising a

signal and for producing an indexed signal

发明人：Eric Allamanche,Jurgen Herre,Oliver

Hellmuth,Thorsten Kastner

申请号：US10484513申请日：20040809

公开号：US20040267522A1公开日：20041230

专利附图：

摘要：In a method for characterizing a signal representing an audio content a measureis determined for a tonality of the signal, whereupon a statement is made about the

audio content of the signal on the basis of the measure for the tonality of the signal. Themeasure for the tonality is derived from a quotient whose numerator is the mean of thesummed values of spectral components of the signal exponentiated with a first powerand whose denominator is the mean of the summed values of spectral componentsexponentiated with a second power, the first and second powers differing from eachother. The measure for the tonality of the signal for the content analysis is robust inrelation to a signal distortion, due e.g. to MP3 coding, and has a high correlation with thecontent of the analysed signal.

申请人：ALLAMANCHE ERIC,HERRE JURGEN,HELLMUTH OLIVER,KASTNER THORSTEN

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