| 摘要 |
PROBLEM TO BE SOLVED: To correct a sound image position resulting from asymmetric arrangement of left right speakers by providing a control circuit providing a correction time (delay time) to one of stereo channels and a temperature sensor and allowing the control circuit to include ambient temperature data by a temperature sensor for the calculation of correction time. SOLUTION: A temperature sensor 11 sensing a temperature in a vehicle room 1 is connected to a control circuit 8 and a means providing a function of ambient temperature is provided to correction time data based on a difference from distance between left, right speakers 3a, 3b and a listening position. That is, the temperature sensor 11 sends temperature data to the control circuit 8 and when there is any distance difference between the left and right speakers 3a, 3b, the distance difference data are given to the control circuit 8 from an input device 9, correction time data are calculated based on a prescribed relation, the correction time data are displayed on a display device 10 and fed to a voice signal processing circuit 6 so as to provide a prescribed delay to one channel of the voice processing circuit 6 thereby bringing the sound image to the middle of the listening position. |
