AUDIO SIGNAL DECODER, AUDIO SIGNAL ENCODER, ENCODED MULTI-CHANNEL AUDIO SIGNAL REPRESENTATION, METHODS AND COMPUTER PROGRAM

摘要

An audio signal decoder for providing a decoded multichannel audio signal representation on the basis of an encoded multi-channel audio signal representation comprises a time warp decoder configured to selectively use individual audio channel specific time warp contours or a joint multi-channel time warp contour for a reconstruction of a plurality of audio channels represented by the encoded multi-channel audio signal representation. An audio signal encoder for providing an encoded representation of a multichannel audio signal comprises an encoded audio representation provider configured to selectively provide an audio representation comprising a common time warp contour information, commonly associated with a plurality of audio channels of the multi-channel audio signal, or an encoded audio representation comprising individual time warp contour information, individually associated with the different audio channels of the plurality of audio channels, in dependence on an information describing a similarity or difference between time warp contours associated with the audio channels of the plurality of audio channels.