A trim panel, e.g., a roof lining for a vehicle passenger compartment, characterized in that the trim panel comprises an integral acoustic radiator and a vibration exciter mounted on the radiator to launch bending waves into the radiator to cause it to resonate to produce an acoustic output. The acoustic...http://www.google.fr/patents/US6377695?utm_source=gb-gplus-shareBrevet US6377695 - Trim panel comprising an integral acoustic system
