| 摘要 |
PROBLEM TO BE SOLVED: To provide a technique capable of improving the quality of sound to be reproduced from right and left speakers.SOLUTION: A middle/high-frequency component is taken out from a Lch signal by a HPF 11 and the signal is output to a switch 51. A middle/high-frequency component is taken out from a Rch signal by a HPF 12 and the signal is output to a switch 52. The Lch signal and the Rch signal are added by an addition part 20, separated after low-frequency components are taken out by a LPF 13, and respectively output to a switch 53 and a switch 54. A changeover part 50 changes over connection points of the switch 51 to the switch 54 in accordance with the posture of a display device 100 detected by a posture detection part 30 and allows a speaker 70d positioned on a left side to output a signal s1, a speaker 70b positioned on a right side to output a signal s2, a speaker 70a positioned on an upper side to output a signal s3, and a speaker 70c positioned on a lower side to output a signal s4 to the screen of the display device 100. |
