A computer-implemented method for calculating a set of filter coefficients for application to a reconstructed audio signal, a method for processing a reconstructed audio signal, and a method for processing a reconstructed composite signal is disclosed. The method for calculating a set of filter coefficients comprises: (a) performing a transform of a set of initial time domain values from a time domain into a frequency domain to produce a set of initial frequency domain values; (b) performing one or more frequency domain calculations using the initial frequency domain values to produce a set of processed frequency domain values; (c) performing a transform of the processed frequency domain values from the frequency domain into the time domain to produce a set of processed time domain values; and (d) producing a filtered audio signal by filtering at least a portion of the reconstructed audio signal in a time domain using the set of filter coefficients. Performing one or more frequency domain calculations using the initial frequency domain values to produce a set of processed frequency domain values comprises clipping frequency domain values in the frequency domain.
