Benefit From Directional Microphone Hearing Aids: Objective and Subjective Evaluations

Clinical and Experimental Otorhinolaryngology
Hee-Sung ParkSung Hwa Hong

Abstract

The aims of this study were to find and compare the effect of directional (DIR) processing of two different hearing aids via both subjective and objective methods, to determine the association between the results of the subjective and objective evaluations, and to find out individual predictive factors influencing the DIR benefit. Twenty-six hearing aid users fitted unilaterally with each two different experimental hearing aid performed modified Korean Hearing in Noise Test (K-HINT) in three DIR conditions; omnidirectional (OMNI) mode, OMNI plus noise reduction feature, fixed DIR mode. In order to determine benefits from DIR benefit within a hearing aid and compare performance of the DIR processing between hearing aids, a subjective questionnaire was administrated on speech quality (SQ) and discomfort in noise (DN) domain. Correlation analysis of factors influencing DIR benefit was accomplished. Benefits from switching OMNI mode to DIR mode within both hearing aids in K-HINT were about 2.8 (standard deviation, 3.5) and 2.1 dB SNR (signal to ratio; SD, 2.5), but significant difference in K-HINT results between OMNI and OMNI plus noise reduction algorithm was not shown. The subjective evaluation resulted in the better SQ and DN s...Continue Reading

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Citations

Feb 22, 2018·American Journal of Audiology·Adriana GoyetteJason Galster
Dec 23, 2020·American Journal of Audiology·Joseph PinklHannah J Stewart

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Software Mentioned

SPSS
HINT
PASW

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