AUDIO DECODER, AUDIO.

摘要

An audio decoder for providing at least four bandwidth-extended channel signals on the basis of an encoded representation is configured to provide a first downmix signal and a second downmix signal on the basis of a jointly encoded representation of the first downmix signal and the second downmix signal using a multi-channel decoding. The audio decoder is configured to provide at least a first (third) audio channel signal and a second (fourth) audio channel signal on the basis of the first (second) downmix signal using a multi-channel decoding. The audio decoder is configured to perform a multi-channel bandwidth extension on the basis of the first (second) audio channel signal and the third (fourth) audio channel signal, to obtain a first (second) bandwidth-extended channel signal and a third (fourth) bandwidth-extended channel signal. An audio encoder uses a related concept.