CPC G10L 19/008 (2013.01) [G10L 19/20 (2013.01); H04S 3/02 (2013.01); H04S 5/00 (2013.01); H04S 2400/03 (2013.01); H04S 2400/11 (2013.01); H04S 2420/03 (2013.01); H04S 2420/07 (2013.01)] | 7 Claims |
7. An apparatus for decoding an audio scene represented by N audio signals, the apparatus comprising:
a receiver for receiving a bit stream comprising L auxiliary signals, M downmix signals and matrix elements of a reconstruction matrix, wherein the matrix elements are transmitted as side information in the bit stream, wherein the M downmix signals are arranged in a first portion of the bit stream using a first format and the matrix elements are arranged in a second field of the bit stream using a second format;
a first processor for generating the reconstruction matrix using the matrix elements; and
a second processor for reconstructing the N audio signals from the M downmix signals and the L auxiliary signals using the reconstruction matrix, wherein approximations of the N audio signals are obtained as linear combinations of the M downmix signals with the matrix elements of the reconstruction matrix as coefficients in the linear combinations, wherein M is less than N, and M is equal or greater than one.
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