Passenger compartment noise attenuation apparatus for use in a m

Details Passenger compartment noise attenuation apparatus for use in a m Passenger compartment noise attenuation apparatus for use in a m

1995-07-05

1998-09-22

Kuntz, Curtis A.

Electrical audio signal processing systems and devices

Vehicle

381 714, 381 712, 381152, 2961461, 2961462, H04B 100, H03B 2900, A61F 1106

Patent

active

058126848

ABSTRACT:
An noise attenuation system disposed on a movable side glass (14) of a motor vehicle for reducing the noise within the passenger compartment. In the preferred embodiment, a piezoceramic sensor (46) and piezoceramic actuators (42, 44) are disposed on a side glass (14) below the beltline (24) of a door (10) on a motor vehicle. The actuators (42, 44) are controllably vibrated in reverse phase to a signal generated by the sensor (46) to cancel or reduce vibrations of the side glass (14). The noise transmitted into the passenger compartment by the side glass (14) is thereby significantly reduced.

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Dynamic Characteristics of Automotive Front Door Side Glass, Thesis, 1994, Michigan Technological University, pp. 189-190.

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