Patent ID: 7664271

Claim:
A method for processing sound signal comprising: an L side enhanced difference signal comprising a sum of signals, in which one of the signals is generated through subtracting an R side input signal being amplified by a predetermined amplifying rate from an L side input signal then removing the high frequency component from remainder, and the other signal is generated through adding said R side input signal being amplified by a predetermined amplifying rate to said L side input signal; an R side enhanced difference signal comprising a sum of signals, in which one of the signals is generated through subtracting said L side input signal being amplified by a predetermined amplifying rate from said R side input signal then removing the high frequency component from the remainder, and the other signal is generated through adding said L side input signal being amplified by a predetermined amplifying rate to said R side input signal; an L side output signal comprising a subtraction of signals, wherein said R side enhanced difference signal, being delayed to remove low and high ranges and amplified by a predetermined amplifying rate for a purpose of cross cancellation talk, is subtracted from said L side enhanced difference signal; and an R side output signal comprising a subtraction of signals, wherein said L side enhanced difference signal, being delayed to remove low and high ranges and amplified by a predetermined amplifying rate for a purpose of cross cancellation talk, is subtracted from said R side enhanced difference signal.