Volume 42 Number 4, July/August 2005, Supplement 2
Pages 79 — 94
Abstract - Speech signals used to evaluate functional status of the auditory
Richard H. Wilson, PhD;1* Rachel McArdle, PhD2
1James H. Quillen Department of Veterans Affairs (VA) Medical Center, Mountain Home, TN; 1Departments of Surgery and Communicative Disorders, East Tennessee State University, Johnson City, TN; 2VA Medical Center, Bay Pines, FL; 2Department of Communication Sciences and Disorders, University of South Florida, Tampa, FL
Abstract — This review presents a brief history of the evolution of speech audiometry from the 1800s to present day. The two-component aspect of hearing loss (audibility and distortion), which was formalized into a framework in past literature, is presented in the context of speech recognition. The differences between speech recognition in quiet and in background noise are discussed as they relate to listeners with normal hearing and listeners with hearing loss. A discussion of the use of sentence materials versus word materials for clinical use is included as is a discussion of the effects of presentation level on recognition performance in quiet and noise. Finally, the effects of age and hearing loss on speech recognition are considered.
Key words: aging, audibility, distortion, hearing aid, hearing loss, multitalker babble, signal-to-noise ratio, speech in noise, speech perception, speech recognition.