| 摘要 |
PURPOSE:To clearly constitute and control a sound field, in addition to control by a conventional digital signal processor by an angle displacement of a loudspeaker, and also, to reduce a burden on a digital signal processor, and to improve the quality of a sound. CONSTITUTION:When a mode of a certain sound field is set, a loudspeaker box 5 in a loudspeaker unit 10 arranged in the front center in a car cabin is driven in accordance therewith, and an elevation angle of loudspeakers 3, 4 is subjected to angle displacement. When the loudspeakers 3, 4 are subjected to angle displacement to the upper part in the car cabin, a sound passes temporarily through a reflection by the inside surface of the car cabin, and in the case it turns in the roughly horizontal direction, it directly reaches a listening position. |
