| 摘要 |
PROBLEM TO BE SOLVED: To provide a sound signal processing circuit capable of eliminating deficiency in the case there is correlation between a front channel signal and a surround channel signal. SOLUTION: This sound signal processing circuit 6 for mixing left and right surround channel signals LS and RS with front left and right channel signals L and R, respectively, which should be outputted from speakers arranged at left and right sides in front of a listener, is provided with first phase shifting circuits 11L and 11R for respectively giving phase shift at a reference angle to the front left and right channel signals L and R, a second phase shifting circuit 12 for giving phase shift to the left surround channel signal LS so as to relatively have a phase difference of a first deviation angle of about +75 deg. with respect to a reference angle, and a third phase shifting circuit 13 for giving phase shift to the right surround channel signal RS so as to relatively have a phase difference of a second deviation angle of about -75 deg. with respect to the reference angle. |
