Patent ID: 6324294
Filing Date: 2001-11-27
Classification: B60R,H04R

Abstract:
A vehicle having a passenger compartment comprising:a vehicle headlining having selected values of certain physical parameters which enable the vehicle headlining to sustain and propagate input vibrational energy in a predetermined frequency range including at least low frequencies by the vehicle headlining when resonating having at least one site at which the number of vibrationally active resonance anti-nodes is relatively high; andat least one vibration exciter attached directly to the vehicle headlining at at least one of said sites, the exciter being capable of vibrating the vehicle headlining in the predetermined frequency range to couple to and excite at least the low-frequency resonant bending wave modes in the vehicle headlining and cause the vehicle headlining to resonate at low frequencies forming an acoustic radiator providing a bass acoustic output when resonating.