Phonetic identification by elderly normal and hearing-impaired listeners

Michael Dorman, K. Marton, M. T. Hannley

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    Abstract

    Young normal-hearing listeners, elderly normal-hearing listeners, and elderly hearing-impaired listeners were tested on a variety of phonetic identification tasks. Where identity was cued by stimulus duration, the elderly hearing-impaired listeners evidenced normal identification functions. On a task in which there were multiple cues to vowel identity, performance was also normal. On a /bdg/ identification task in which the starting frequency of the second formant was varied, performance was abnormal for both the elderly hearing-impaired listeners and the elderly normal-hearing listeners. We conclude that errors in phonetic identification among elderly hearing-impaired listeners with mild to moderate, sloping hearing impairment do not stem from abnormalities in processing stimulus duration. The results with the /bdg/ continuum suggest that one factor underlying errors may be an inability to base identification on dynamic spectral information when relatively static information, which is normally characteristic of a phonetic segment, is unavailable.

    Original languageEnglish (US)
    Pages (from-to)664-670
    Number of pages7
    JournalJournal of the Acoustical Society of America
    Volume77
    Issue number2
    Publication statusPublished - Feb 1985

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    ASJC Scopus subject areas

    • Acoustics and Ultrasonics

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