Project Details


The overall goal of this research is to apply basic knowledge of
binaural hearing to the solution of clinical problems. Specifically,
the two goals of this work are: (1) to evaluate the binaural
performance of individuals with various degrees and
configurations of hearing loss fitted with different hearing aid
configurations, and (2) to determine the extent to which
psychoacoustic detection measurements (masking-level
differences and contralateral masking) are capable of predicting
speech intelligibility and localization ability with these hearing
aid configurations.

Hearing-aid evaluations will entail measuring word-intelligibility
thresholds and source localization in quiet and in noise in both
anechoic and reverberant environments. Both the acoustic sound
fields and the hearing aids will be simulated by applying measured
transfer functions (for the sound fields) and filters specified by
most-comfortable-level adjustments (for the hearing aids). One
configuration will be designed to optimize the use of binaural
cues. Psychoacoustic detection tests will assess the ability to use
binaural cues under the same hearing-aid configurations. The
results of these detection tests will be used in a theoretical model
to predict binaural and directional advantages in speech

The outcome of this work will help to clarify understanding of the
potential benefit of binaural hearing aids. Further, by
establishing relations between aided binaural performance and
simple detection measures, we will be laying the foundation for a
clinical test that can be used to predict binaural performance
with different hearing aids.
Effective start/end date1/07/9030/06/91


  • National Institute on Deafness and Other Communication Disorders


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