Patent ID: 6690799
Filing Date: 2004-02-10
Classification: H04S

Abstract:
A stereo signal processing apparatus, which removes vocal signals included in right and left input signals, comprising:right filter means for extracting a right low-frequency signal and a right high-frequency signal from a right input signal; left filter means for extracting a left low-frequency signal and a left high-frequency signal from a left input signal; subtraction means for performing subtraction between the right input signal and the left input signal so as to generate a vocal removal signal; right addition means for adding the right low-frequency signal and the right high-frequency signal from said right filter means to the vocal removal signal from said subtraction means so as to generate a right output signal; left addition means for adding the left low-frequency signal and the left high-frequency signal from said left filter means to the vocal removal signal from said subtraction means so as to generate a left output signal, wherein said right filter means and said left filter means comprise filters having different filter types.