Patent · US Active

Apparatus and method for processing a multi-channel signal

US7340391B2 · kind B2 · utility

14Cited by

4References

12Claims

0Family size

Assignee

Fraunhofer-Gesellschaft zur förderung der angewandten Forschung e.V. · DE

Inventors

Juergen Herre · Erlangen, DE
Michael Schug · Erlangen, DE
Alexander Groeschel · Nuremberg, DE

Key dates

Filing date	Aug 14, 2006
Grant date	Mar 4, 2008
Priority date	—
Expiry date	Aug 14, 2026

Classification

Technology area (CPC G)Physics
CPC primaryG10L19/008
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

An apparatus for processing a multi-channel signal includes a means for determining a similarity between a first one of two channels and a second one of the two channels. Furthermore, a means for performing a prediction filtering of the spectral coefficients is provided, which is formed to perform a prediction filtering with only a single prediction filter for both channels in case of high similarity between the first and the second channel, and to perform a prediction filtering with two separate prediction filters in case of a dissimilarity between the first and the second channel. With this, an introduction of stereo artifacts and a deterioration of the coding gain in stereo coding techniques are avoided.

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