1. Vibro-Acoustics and Sound Quality Research Laboratory, College of Engineering and Applied Science, University of Cincinnati, 801 Engineering Research Center, 2901 Woodside Drive, P.O. Box 210018, Cincinnati, OH 45221-0018
2. Vibro-Acoustics and Sound Quality Research Laboratory, College of Engineering and Applied Science, University of Cincinnati, 801 Engineering Research Center, 2901 Woodside Drive, P.O. Box 210018, Cincinnati, OH 45221-0018 e-mail:
3. Powertrain NVH R&D Department, Research and Advanced Engineering Center, Ford Motor Company, Dearborn, MI 48124