APPARATUS AND METHOD FOR GENERATING A MULTI-CHANNEL OUTPUT SIGNAL

摘要

An apparatus for generating a multi-channel output signal performs a center channel cancellation to obtain improved base channels for reconstructing left-side output channels or right-side output channels. In particular, the apparatus includes a cancellation channel calculator (20) for calculating a cancellation channel using information related to the original center channel available at the decoder. The device furthermore includes a combiner (22) for combining a transmission channel with the cancellation channel. Finally, the apparatus includes a reconstructor (26) for generating the multi-channel output signal. Due to the center channel cancellation, the channel reconstructor (26) not only uses a different base channel for reconstructing the center channel but also uses base channels different from the transmission channels for reconstructing left and right output channels which have a reduced or even completely cancelled influence of the original center channel.