Requests for reprints may be sent to him at this address. Ruben D. Kelly is a professor in the Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, NM 87131.Edward A. Shirkey is an assistant professor in the Department of Communicative Disorders, University of New Mexico, Albuquerque, NM 87131. Requests for reprints may be sent to him at this address. Ruben D. Kelly is a professor in the Department of Electrical and Computer Engineering, University of New Mexico, Albuquerque, NM 87131.× Copyright © 1987 American Speech-Language-Hearing Association Article Information