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Anthony C. Woodbury, Chair CLA 4.304, Mailcode B5100, Austin, TX 78712 • 512-471-1701

Colloquium Erick Gallun & Michelle Molis (Oregon Health and Science University)

Mon, April 14, 2014 • 3:00 PM - 4:30 PM • CLA 1.302D

Measuring and modeling spectral change sensitivity in listeners with impaired hearing

Speech is an inherently dynamic signal and listeners use changes in the acoustic signal as cues to phoneme identity. The loss of peripheral auditory sensitivity, precise temporal processing, and frequency selectivity associated with hearing impairment will disrupt the perception of spectral change resulting in reduced speech understanding. We are planning to assess the ability of a psychophysically-motivated metric of spectral change to model the perceptual auditory sensitivity of listeners with hearing impairment.  The model  incorporates the spectral and temporal consequences of hearing loss. Results will be presented from a spectral-ripple discrimination task used to evaluate listeners’ frequency-resolving power, and the application of task outcomes to model development will be discussed.

Michelle R. Molis

Assistant Research Professor, Dept. of Otolaryngology

Oregon Health & Science University

Research Investigator, National Center for Rehabilitative Auditory Research

Portland VA Medical Center

Frederick J. Gallun

Associate Professor, Dept. of Otolaryngology and Neuroscience Graduate Program

Oregon Health & Science University

Research Investigator, National Center for Rehabilitative Auditory Research

Portland VA Medical Center

 


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