Individual differences in auditory discrimination of spectral shape and speech-identification performance among elderly listeners

The Journal of the Acoustical Society of America
Mini N ShrivastavDiane Kewley-Port

Abstract

Speech-understanding difficulties observed in elderly hearing-impaired listeners are predominantly errors in the recognition of consonants, particularly within consonants that share the same manner of articulation. Spectral shape is an important acoustic cue that serves to distinguish such consonants. The present study examined whether individual differences in speech understanding among elderly hearing-impaired listeners could be explained by individual differences in spectral-shape discrimination ability. This study included a group of 20 elderly hearing-impaired listeners, as well as a group of young normal-hearing adults for comparison purposes. All subjects were tested on speech-identification tasks, with natural and computer-synthesized speech stimuli, and on a series of spectral-shape discrimination tasks. As expected, the young normal-hearing adults performed better than the elderly listeners on many of the identification tasks and on all but two discrimination tasks. Regression analyses of the data from the elderly listeners revealed moderate predictive relationships between some of the spectral-shape discrimination thresholds and speech-identification performance. The results indicated that when all stimuli were at le...Continue Reading

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Citations

Jun 3, 2008·Brain : a Journal of Neurology·Gary RanceMartin B Delatycki
Oct 19, 2012·Ear and Hearing·Ting ZhangAniket Saoji
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May 22, 2021·Journal of Speech, Language, and Hearing Research : JSLHR·Pamela E SouzaFrederick Gallun

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