Jeffrey J. DiGiovanni, Ph.D., CCC-A is Assistant Professor of Audiology and Coordinator of Professional Programs (Au.D. and M.A. SLP) at Ohio University. His doctorate (audiology) and masters degrees (communication disorders) were completed at the University of Minnesota and he has a bachelor¿s degree in electrical engineering from the University of Massachusetts. He teaches courses in balance disorders, hearing aids, and hearing science. His research interests include hearing aid signal processing and psychophysics.DiGiovanni, Jeffrey J. is the author of 'Hearing Aid Handbook', published 2008 under ISBN 9781418051983 and ISBN 1418051985.