| 摘要 |
PURPOSE:To remove the attenuation of a signal component and to prevent deterioration in S/N ratio by extracting a difference signal by demodulated signals of a left and a right signal, and adding or subtracting the difference signal to or from the left and right signals and obtaining a signal which has a crosstalk component removed. CONSTITUTION:A subtracting circuit 11 is provided to obtain the difference between signals L1 and R1 appearing at the output side of a switch circuit 3, and the difference signal D(L1-R1) obtained at the output side of the subtracting circuit 11 is passed through variable resistors 7 and 8 to obtain difference signals DL and RR to which some coefficient is added. Those signals are supplied to an adding circuit 12 and a subtracting circuit 13; the adding circuit 12 adds the signal L1 from the switch circuit 3 and the difference signal DL, and the subtracting circuit 13 obtains the difference between the signal R1 from the switch circuit 3 and the difference signal DR. Consequently, signals L4 and R4 shown by equations appear at output terminals 9 and 10 of the adding circuit 12 and subtracting circuit 13 as real and right signals L and R. Namely, the signals containing no crosstalk components are led out. |
