| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a satisfactory sound reproduction device by controlling sound waves generated from a center speaker and eliminating phase interference between the center speaker and right and left speakers in the sound reproduction device which provides satisfactory music reproduction by controlling phases of the sound waves generated from the right and left speakers. <P>SOLUTION: At least one channel of prestages of power amplifiers 3, 6, 10 is constituted of at least one n-th order phase shifters 5, 8, at least one channel of the remaining channels is constituted of the n-th order phase shifter 8 and an adder 13, and a circuit for adding a music signal source 1 to the phase shifter 8 and outputting the added result is provided. <P>COPYRIGHT: (C)2007,JPO&INPIT |
