Motor car has active acoustic transducer which is positioned at cross beam of supporting structure connected to two longitudinal beams, where cavity of cross beam is matched with cavities of longitudinal beams to form resonant space

摘要

The motor car (1) has three speaker systems (3,5,7) which are provided with an active acoustic transducer (9) which is acoustically coupled to a resonant space which is formed in a cavity within a supporting structure of the motor car. The acoustic transducer is positioned at a cross beam (11) of the supporting structure. The supporting structure is connected to two longitudinal beams (13,15). A cavity of the cross beam is matched with the cavities of the longitudinal beams to form the resonant space.