Frequency selectivity and consonant recognition were determined for normal‐hearing and hearing‐impaired listeners using techniques that facilitate comparisons of performance among listeners whose absolute thresholds vary in magnitude and configuration. First, for each of six subjects with cochlear hearing loss, masked thresholds in notched noise and narrow‐band‐noise maskers were obtained and compared to results for three normal‐hearing listeners whose thresholds were precisely matched to the impaired listeners’ by masking with spectrally shaped broadband noise. Second, for hearing‐impaired listeners and their masked normal‐hearing controls, measurements of consonant recognition were obtained at several speech‐presentation levels selected on the basis of articulation‐index predictions to assure equal speech‐spectrum audibility across listeners. The results suggest that frequency selectivity is poorer for hearing‐impaired listeners than for masked normal‐hearing listeners, even when thresholds among subjects are equated, but the deviation from normal frequency selectivity is smaller than estimated from comparisons with normal‐hearing listeners in quiet. Critical ratios for hearing‐impaired listeners are equivalent to normal. Although frequency selectivity is reduced, there is no consistent difference in consonant recognition between hearing‐impaired subjects and masked normal‐hearing subjects, when performance is assessed under conditions that assure equal speech‐spectrum audibility across subjects.
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April 1992
April 01 1992
Comparison of frequency selectivity and consonant recognition among hearing‐impaired and masked normal‐hearing listeners
Judy R. Dubno;
Judy R. Dubno
Medical University of South Carolina, Department of Otolaryngology and Communicative Sciences, Charleston, South Carolina 29425
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Amy B. Schaefer
Amy B. Schaefer
UCLA School of Medicine, Division of Head and Neck Surgery, Los Angeles, California 90024
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J. Acoust. Soc. Am. 91, 2110–2121 (1992)
Article history
Received:
February 15 1991
Accepted:
January 08 1992
Citation
Judy R. Dubno, Amy B. Schaefer; Comparison of frequency selectivity and consonant recognition among hearing‐impaired and masked normal‐hearing listeners. J. Acoust. Soc. Am. 1 April 1992; 91 (4): 2110–2121. https://doi.org/10.1121/1.403697
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