Patent · US Expired

Method and device for characterizing a signal and method and device for producing an indexed signal

US7081581B2 · kind B2 · utility

9Cited by

6References

15Claims

0Family size

Assignee

M2ANY GmbH · DE

Inventors

Eric A. Allamanche · Nuremberg, DE
Juergen Herre · Erlangen, DE
Oliver Hellmuth · Erlangen, DE
Bernhard Froeba · Steinbach, DE

Key dates

Filing date	Feb 26, 2002
Grant date	Jul 25, 2006
Priority date	—
Expiry date	Oct 17, 2022

Classification

Technology area (CPC G)Physics
CPC primaryG10H2250/601
WIPO fieldOther consumer goods
WIPO sectorOther fields

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.