公开(公告)号：EP1697930A1

公开(公告)日：2006-09-06

申请号：EP05715611.9

申请日：2005-02-28

申请人： Fraunhofer-Gesellschaft Zur Förderung der angewand ten Forschung e.v.

发明人： HERRE, Jürgen ,  SCHUG, Michael ,  GROESCHL, Alexander

IPC分类号： G10L19/00 ,  G10L19/02

CPC分类号： G10L19/03 ,  G10L19/008

摘要： The invention relates to a device for processing a multi-channel signal comprising a unit (12) for determining a similarity between the first of two channels and the second of two channels. The device is also equipped with a unit (16) for carrying out a predictive filtering of the spectral coefficients, said unit being configured to carry out a predictive filtering by means of a single predictive filter (16a) for both channels, if the first and second channels are very similar and to carry out a predictive filtering by means of two separate predictive filters (16b), if the first and the second channels are dissimilar. This prevents the introduction of stereo artefacts and a degradation of the coding gain in stereo coding techniques.