Abstract: In the coding and decoding of stereo audio spectral values both the intensity stereo process and prediction are used in order to achieve high data compression. If intensity stereo coding is active in one section of scale factor bands, the prediction for the right channel in that range is deactivated, whereby the results of the prediction are not used to form the coded stereo audio spectral values. To allow further adaptation of the prediction for the right channel, the predictor of the right channel is fed with stereo audio spectral values for the channel, which again are intensity stereo decoded.
Type:
Grant
Filed:
May 28, 1999
Date of Patent:
January 22, 2002
Assignees:
Fraunhofer-Gesellschaft zur Förderdung der Angewandten
Forschung E.V., AT&T Laboratories/Research, Lucent Technologies, Bell Laboratories
Inventors:
Uwe Gbur, Martin Dietz, Karlheinz Brandenburg, Heinz Gerhauser, Jürgen Herre, Schuyler Quackenbush