alexa Effects of noise and reverberation on virtual sound localization for listeners with bilateral cochlear implants.

Journal of Phonetics & Audiology

Author(s): Zheng Y, Koehnke J, Besing J, Spitzer J

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Abstract OBJECTIVE: This study investigated the effects of both noise and reverberation on the ability of listeners with bilateral cochlear implants (BCIs) to localize and the feasibility of using a virtual localization test to evaluate BCI users. DESIGN: Seven adults with normal hearing (NH) and two adults with BCIs participated. All subjects completed the virtual localization test in quiet and at 0, -4, -8 dB signal-to-noise ratio in simulated anechoic and reverberant environments. BCI users were also tested at +4 dB signal-to-noise ratio. The noise source was at 0°. A three-word phrase was presented at 70 dB SPL from nine simulated locations in the frontal horizontal plane (±90°). RESULTS: Results revealed significantly poorer localization accuracy for BCI users than NH listeners in all conditions. Significant reverberation effects were observed for BCI users but not listeners with NH. CONCLUSION: Noise and reverberation have a significant effect on BCI users, and their localization ability can be evaluated using these virtual tests. This article was published in Ear Hear and referenced in Journal of Phonetics & Audiology

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