Patent ID: 8204235

Claim:
A center channel positioning apparatus, comprising: a sound signal outputting unit which outputs a left sound signal, a right sound signal, and a center channel sound signal, a sound signal processing unit which produces a left sound signal for center channel positioning, and a right sound signal for center channel positioning, based on the center channel sound signal, a left sound signal combining unit which combines the left sound signal with the left sound signal for center channel positioning to output a left combined sound signal to be supplied to a left speaker, and a right sound signal combining unit which combines the right sound signal with the right sound signal for center channel positioning to output a right combined sound signal to be supplied to a right speaker, wherein the sound signal processing unit changes a phase of at least one of the left sound signal for center channel positioning and the right sound signal for center channel positioning, based on a processing coefficient, and the processing coefficient is calculated based on the difference in level between both ears in the case where the left sound signal for center channel positioning and the right sound signal for center channel positioning are reproduced simultaneously, and the sum of power at both ears of the left sound signal for center channel positioning and the right sound signal for center channel positioning.