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Related Experiment Videos

Monaural envelope correlation perception in listeners with normal hearing and cochlear impairment

J W Hall1, J H Grose

  • 1University of North Carolina at Chapel Hill.

Journal of Speech and Hearing Research
|December 1, 1993
PubMed
Summary

Listeners with normal hearing and cochlear hearing loss were tested on monaural envelope correlation. Hearing loss did not significantly impact performance when spectral separation exceeded 250 Hz, especially with more bands.

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Area of Science:

  • Auditory Neuroscience
  • Psychoacoustics
  • Hearing Science

Background:

  • Monaural envelope correlation is crucial for auditory scene analysis.
  • Understanding its perception in hearing impairment is vital for audiological rehabilitation.

Purpose of the Study:

  • To investigate monaural envelope correlation perception in normal-hearing and cochlear-impaired listeners.
  • To assess the effects of spectral separation (delta f) and number of bands on performance.

Main Methods:

  • A three-interval forced-choice procedure was used.
  • Listeners identified intervals with correlated noise band envelopes.
  • Tested conditions included delta f (250, 500, 1000 Hz) and 2, 3, or 5 noise bands.

Main Results:

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  • Normal-hearing listeners performed better with smaller delta f.
  • Hearing loss had no significant effect when delta f > 250 Hz.
  • Performance improved with more bands for both groups at 500 Hz delta f.

Conclusions:

  • Cochlear hearing loss may not significantly impair monaural envelope correlation perception under certain spectral conditions.
  • Increased number of bands can benefit listeners with hearing impairment, especially at finer spectral resolutions.
  • Findings suggest potential for tailored auditory training or device strategies.