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J Rehabil Res Dev. 2005 Jul-Aug;42(4 Suppl 2):79-94.

Speech signals used to evaluate functional status of the auditory system.

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James H. Quillen Department of Veterans Affairs (VA) Medical Center, Mountain Home, TN 37684, USA.


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.

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