Patent · US Active

Apparatus and method for robust classification of audio signals, and method for establishing and operating an audio-signal database, as well as computer program

US7580832B2 · kind B2 · utility

52Cited by

23References

32Claims

0Family size

Assignee

M2ANY GmbH · DE

Inventors

Eric A. Allamanche · Nuremberg, DE
Juergen Herre · Erlangen, DE
Oliver Hellmuth · Erlangen, DE
Thorsten Kastner · Kronach, DE
Markus K. Cremer · Orinda, US

Key dates

Filing date	Aug 31, 2004
Grant date	Aug 25, 2009
Priority date	—
Expiry date	Mar 8, 2027

Classification

Technology area (CPC G)Physics
CPC primaryG10L25/48
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

An apparatus for producing a fingerprint signal from an audio signal includes a means for calculating energy values for frequency bands of segments of the audio signal which are successive in time, so as to obtain, from the audio signal, a sequence of vectors of energy values, a means for scaling the energy values to obtain a sequence of scaled vectors, and a means for temporal filtering of the sequence of scaled vectors to obtain a filtered sequence which represents the fingerprint, or from which the fingerprint may be derived. Thus, a fingerprint is produced which is robust against disturbances due to problems associated with coding or with transmission channels, and which is especially suited for mobile radio applications.

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