Malcolm J. Crocker, PhD, is Distinguished University Professor in the Mechanical Engineering Department of Auburn University, where he teaches and conducts research, sponsored by industry and government, in acoustics, noise, and vibration control. Dr. Crocker served for twenty years as the Editor of the "Noise Control Engineering Journal" and is currently Editor of the "International Journal of Acoustics and Vibration," His contributions have been recognized with many honors including three honorary doctorates.