Concept for bridging the gap between parametric multi-channel audio coding and matrixed-surround multi-channel coding
a multi-channel audio coding and matrixed surround technology, applied in the field of multi-channel audio coding and transmission, can solve the problems of general loss of audio quality, high bit rate, and limited multi-channel reconstruction quality,
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[0056]FIG. 1 shows an inventive multi-channel encoder. The multi-channel encoder 100 is having a parameter generator 102 and an output interface 104.
[0057] A multi-channel audio signal 106 is input into the encoder 100, where a first portion 108 and a second portion 110 of the multi-channel signal 106 are processed. The parameter generator 102 receives the first portion 108 and the second portion 110 and derives spatial parameters describing spatial properties of the multi-channel signal 106.
[0058] The spatial parameters are transferred to the output interface 104 that derives a parametric representation 112 of the multi-channel signal 106 such that the parametric representation 112 includes first parametric data for a first portion 108 of the multi-channel signal and wherein for a second portion 110 of the multi-channel signal 106 second parametric data requiring less information than the first parametric data or no parametric data is included in the parametric representation 112...
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