Patent ID: 7747448

Claim:
The method for recovering erroneous components of multi-channel signals, comprising: deriving in a decoder and storing, during error-free conditions for a predetermined channel signal which is a multichannel signal, parameters h k of a parametric model giving an estimate of a portion of the predetermined channel signal when applied to a deriving input signal, wherein the input signal is a linear combination of at least one other of the multi-channel signals than the predetermined channel signal; detecting in the decoder if at least a portion of the predetermined channel signal is erroneous; generating in the decoder, when a portion of the predetermined channel signal is erroneous, a replacement signal portion to the erroneous portion of the predetermined channel signal by applying the parametric model based on the stored parameters associated with a preceding error-free signal to a generating input signal; and wherein the parametric model comprises a filter configured to filter the input signal and wherein coefficients of the filter comprise the parameters that are defined during the error-free conditions.