Speech perception ability and psychophysical tuning curves in hearing-impaired listeners

P. G. Stelmachowicz, Walt Jesteadt, Michael P Gorga, J. Mott

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Abstract

Performance-intensity functions for monosyllabic words were obtained as a function of signal-to-noise ratio for broadband and low-pass filtered noise. Subjects were 11 normal-hearing listeners and 13 hearing-impaired listeners with flat, moderate sensorineural hearing losses and good speech-discrimination ability (at least 86%) in quiet. In the broadband-noise condition, only small differences in speech perception were noted between the two groups. In low-pass noise, however, large differences in performance were observed. These findings were correlated with various aspects of psychophysical tuning curves (PTCs) obtained from the same individuals. Results of a multivariate analysis suggest that performance in broadband noise is correlated with filter bandwidth (Q10), while performance in low-pass noise is correlated with changes on the low-frequency side of the PTC.

Original languageEnglish (US)
Pages (from-to)620-627
Number of pages8
JournalJournal of the Acoustical Society of America
Volume77
Issue number2
DOIs
Publication statusPublished - Feb 1985

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ASJC Scopus subject areas

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

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