| 摘要 |
PROBLEM TO BE SOLVED: To realize natural reproduction of a stereoscopic sound field at all seats by installing speakers on doors of front and rear seats on the left and right, a center speaker on the upper surface of the center of a front dash board, a rear speaker on the left and right of a rear tray and a speaker for low-band reproduction on the center part in compartment and commonly reproducing two channel signals on the left and right by the door speakers at the front and rear seats. SOLUTION: A door speaker 7 for right front seat, a door speaker 8 for left front seat, a door speaker 9 for right rear seat and a door speaker 10 for left rear seat are installed to doors of the front and rear seats on the left and right respectively and the center speaker 11 is installed at the center part of the upper surface of the front dash board 15. A right rear speaker 12, a left rear speaker 13 are installed on the left and right of the rear tray and the speaker 14 for low-band reproduction is installed at its center part. When the two channel signals on the left and right as main signals are set to be reproduced by the door speakers 8, 10, 7, 9 installed on the doors of the left front and rear seats, the doors of the right front and rear seats, reproduced sound pressure level of the main signals becomes equivalent at both front and rear seats. |
