Active road noise control system

A method of reducing structure borne road noise audible in a vehicle cabin comprising;

• providing a vehicle having one or more wheels coupled to a vehicle body by a chassis, the chassis being coupled to the vehicle body by a coupling;
• securing one or more inertial actuators comprising a mass to the chassis and/or to a portion of the vehicle body adjacent to the or each coupling;
• actuating the mass of the inertial actuator with a transducer thereby applying a force to the chassis and/or vehicle body, thereby reducing or suppressing vibrations in the chassis and/or vehicle body.

A vehicle comprising a vehicle body having a cabin and one or more wheels in rolling contact with a surface, the one or more wheels being coupled to the vehicle body by one or more supports wherein at least one inertial actuator is mounted upon at least one or each of said one or more supports for suppression or cancellation of vibration in the supports from being transmitted into the vehicle body, thereby reducing audible road noise in the cabin.

An active road noise reduction system for a vehicle comprising a vehicle body having a cabin and one or more wheels in rolling contact with a surface, the one or more wheels being coupled to the vehicle body by a chassis, the system comprising at least one inertial actuator mounted upon the chassis for suppression or cancellation of vibrations or noise in the chassis resulting from said rolling contact before transmission into the vehicle body or cabin.

13-15. (canceled)