Processing of multi-channel signals

摘要

A method of generating a monaural signal (S) comprising a combination of at least two input audio channels (L, R) is disclosed. Corresponding frequency components from respective frequency spectrum representations for each audio channel (L(k), R(k)) are summed ( 46 ) to provide a set of summed frequency components (S(k)) for each sequential segment. For each frequency band (i) of each of sequential segment, a correction factor (m(i)) is calculated ( 45 ) as function of a sum of energy of the frequency components of the summed signal in the band formula (I) and a sum of components of the input audio channels in the band formula (II). Each summed frequency component is corrected ( 47 ) as a function of the correction factor (m(i)) for the frequency band of said component.