APPARATUS FOR REDUCING OF CAR'S WINDOW NOISE

摘要

PURPOSE: A noise reduction device for a vehicle window is provided to minimize noises while keeping the original function of the vehicle window by using transparent piezoelectric material and panel. CONSTITUTION: A noise reduction device for a vehicle window comprises a smart panel(10), a shunt circuit(20), a vehicle control unit, and a high voltage amplifier. The smart panel to which a piezoelectric material(11) is attached is mounted on a window(3) of a vehicle. The shunt circuit is electrically connected to the piezoelectric material of the panel in order to piezoelectrically dampen noise energy entering the smart panel. The vehicle control unit transfers a control signal with the opposite phase to the noise energy according to the speed of the vehicle. The high voltage amplifier transmits the control signal delivered from the vehicle control unit to the piezoelectric material of the smart panel.