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Saturday, February 9 • 9:00am - 9:20am
Learning to Localize with Advanced Hearing Protectors and TCAPS ‚ Importance and Practicality of Learning Curves

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Previous research showed that one can reach a similar level of open ear azimuthal localization performance given sufficient training with certain TCAPS.  The objective of this research was to compare the rate of learning under different hearing conditions, including over-the-ear (OTE) and in-the-ear (ITE) devices, and the open ear.  The localization training/test system was modified from the DRILCOM system.  Three hearing conditions, open-ear, Etymotic ER125-GSE (ITE), and Peltor ComTac III (OTE), were presented in counterbalanced order.  Each single session of 20 minutes consisted of paired combinations of training and testing trials, and comprised a "Learning Unit (LU)."  Naive, normal-hearing subjects completed 12 LUs for each hearing condition.  The results showed that subjects training with the ITE device learned at a statistically similar pace (slope) as with the open ear, and their absolute accuracy was within 7% of the open ear after full training, improving from 40% correct starting with the 1st LU to 78% correct after 12 LUs. However, learning rate was significantly worse than open ear with the OTE device, starting with 24% accuracy and ending at 37% accuracy after 12 LUs. Essentially, the OTE device never approached open ear performance, even after extensive training.

avatar for Kichol Lee

Kichol Lee

Virginia Tech
Dr. Lee is a research assistant professor of Industrial and Systems Engineering at Virginia Tech. He received a Ph.D. in Human Factors Engineering at Virginia Tech in 2011. As a manager of Auditory Systems Lab at Virginia Tech, he conducts various projects related to product design... Read More →
avatar for John G. Casali, Ph.D., C.P.E.

John G. Casali, Ph.D., C.P.E.

Virginia Tech & HEAR LLC
Dr. Casali is the Grado Chaired Professor of Industrial and Systems Engineering at Virginia Tech, and a Board-Certified Professional Ergonomist (CPE). He founded the Auditory Systems Laboratory in 1983, a versatile auditory/acoustics research facility at Virginia Tech that he directs... Read More →

Saturday February 9, 2019 9:00am - 9:20am PST
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