Individual Sensitivity to Spectral and Temporal Cues in Listeners With Hearing Impairment Purpose The present study was designed to evaluate use of spectral and temporal cues under conditions in which both types of cues were available. Method Participants included adults with normal hearing and hearing loss. We focused on 3 categories of speech cues: static spectral (spectral shape), dynamic spectral ... Research Article
Research Article  |   April 01, 2015
Individual Sensitivity to Spectral and Temporal Cues in Listeners With Hearing Impairment
 
Author Affiliations & Notes
  • Pamela E. Souza
    Northwestern University, Evanston, IL
    Knowles Hearing Center, Northwestern University, Evanston, IL
  • Richard A. Wright
    University of Washington, Seattle
  • Michael C. Blackburn
    Northwestern University, Evanston, IL
  • Rachael Tatman
    University of Washington, Seattle
  • Frederick J. Gallun
    National Center for Rehabilitative Auditory Research, Portland VA Medical Center, OR
    Oregon Health & Science University, Portland
  • Disclosure: The authors have declared that no competing interests existed at the time of publication.
    Disclosure: The authors have declared that no competing interests existed at the time of publication.×
  • Correspondence to Pamela E. Souza: p-souza@northwestern.edu
  • Editor: Nancy Tye-Murray
    Editor: Nancy Tye-Murray×
  • Associate Editor: Karen Kirk
    Associate Editor: Karen Kirk×
Article Information
Hearing Disorders / Hearing / Research Articles
Research Article   |   April 01, 2015
Individual Sensitivity to Spectral and Temporal Cues in Listeners With Hearing Impairment
Journal of Speech, Language, and Hearing Research, April 2015, Vol. 58, 520-534. doi:10.1044/2015_JSLHR-H-14-0138
History: Received May 22, 2014 , Revised October 14, 2014 , Accepted December 18, 2014
 
Journal of Speech, Language, and Hearing Research, April 2015, Vol. 58, 520-534. doi:10.1044/2015_JSLHR-H-14-0138
History: Received May 22, 2014; Revised October 14, 2014; Accepted December 18, 2014
Web of Science® Times Cited: 3

Purpose The present study was designed to evaluate use of spectral and temporal cues under conditions in which both types of cues were available.

Method Participants included adults with normal hearing and hearing loss. We focused on 3 categories of speech cues: static spectral (spectral shape), dynamic spectral (formant change), and temporal (amplitude envelope). Spectral and/or temporal dimensions of synthetic speech were systematically manipulated along a continuum, and recognition was measured using the manipulated stimuli. Level was controlled to ensure cue audibility. Discriminant function analysis was used to determine to what degree spectral and temporal information contributed to the identification of each stimulus.

Results Listeners with normal hearing were influenced to a greater extent by spectral cues for all stimuli. Listeners with hearing impairment generally utilized spectral cues when the information was static (spectral shape) but used temporal cues when the information was dynamic (formant transition). The relative use of spectral and temporal dimensions varied among individuals, especially among listeners with hearing loss.

Conclusion Information about spectral and temporal cue use may aid in identifying listeners who rely to a greater extent on particular acoustic cues and applying that information toward therapeutic interventions.

Acknowledgments
This work was supported by National Institutes of Health Grant R01 DC60014.
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