Patent ID: 8331572
Filing Date: 2012-12-11
Classification: G10L,H04R,H04S

Abstract:
1. Decoding apparatus for decoding an encoded digital audio signal comprising at least a first and a second digital audio signal component, which have been encoded into a composite digital signal (X), wherein the composite digital signal is a wideband signal split into a plurality of composite digital subsignals, one for each of a plurality of frequency bands, the parameter signal also being split into a plurality of parameter sub signals, one for each of the plurality of frequency bands, and a parameter signal (P), the decoding apparatus comprising: an input unit ( a demultiplexer unit ( a decorrelator unit ( a matrixing unit ( the reproduction of the first digital audio signal component being a linear combination of the composite digital signal and the decorrelated version of the composite digital signal, using multiplier coefficients that are dependent of the parameter signal, the reproduction of the second digital audio signal component being a linear combination of the composite digital signal and the decorrelated version of the composite digital signal, using multiplier coefficients that are dependent of the parameter signal, wherein a sub signal of the first digital audio signal component being a linear combination of a corresponding composite digital sub signal and the decorrelated version of the corresponding composite digital sub signal, using multiplier coefficients that are dependent of a corresponding one of said parameter sub signals, and a sub signal of the second digital audio signal component being a linear combination of a corresponding composite digital sub signal and the decorrelated version of the corresponding composite digital sub signal, using multiplier coefficients that are dependent of a corresponding one of said parameter sub signals, and a transform unit (