STEREOPHONIC SIGNAL PROCESSING APPARATUS

摘要

To realize a stereophonic signal processing apparatus capable of reproducing also sounds of musical instruments in high fidelity, as effectively eliminating vocal signals. An apparatus of the invention is characterized by comprising right filter means (121 and 122) for extracting a right low-frequency signal and a right high-frequency signal from a right input signal, left filter means (lll and ll2) for extracting a left low-frequency signal and a left high-frequency signal from a left input signal, a subtraction means (131) for subtracting a right input signal and a left input signal and thereby generating a vocal elimination signal, a right addition means (123) for adding a right low-frequency signal and a right high-frequency signal from said right filter means to a vocal elimination signal from said subtraction means and thereby generating a right output signal, a left addition means (ll3) for adding a left low-frequency signal and a left high-frequency signal from said left filter means to a vocal elimination signal from said subtraction means and thereby generating a left output signal, and a control means (140) for changing characteristics of both of said right filter means and said left filter means according to at least one of a right input signal and a left input signal.