Patent ID: 7343281

Claim:
A method of generating a monaural signal comprising a combination of at least two input audio signals, said method comprising the steps of: dividing said at least two input audio signals into a plurality of sequential segments; summing, for each of the sequential segments of said audio signals, corresponding frequency components from respective frequency spectrum representations for each audio signal to form a set of summed frequency components for each sequential segment; calculating, for each of the sequential segments, a correction factor for each of a plurality of frequency bands (i) as function of the energy of the frequency components of the summed frequency components in said band ( ∑ k ∈ i ⁢  S ⁡ ( k )  2 ) and the energy of said frequency components of the input audio signals in said band ( ∑ k ∈ i ⁢ {  L ⁡ ( k )  2 +  R ⁡ ( k )  2 } ) ; correcting each summed frequency component as a function of the correction factor (m(i)) for the frequency band of said component; and outputting said corrected summed frequency components as said monaural signal.