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

Yunfang Zheng, Janet Koehnke, Joan Besing, Jaclyn Spitzer

Research output: Contribution to journalArticle

9 Citations (Scopus)

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.

Original languageEnglish
Pages (from-to)569-572
Number of pages4
JournalEar and Hearing
Volume32
Issue number5
DOIs
StatePublished - 1 Sep 2011

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Sound Localization
Cochlear Implants
Noise
Hearing
Aptitude
Signal-To-Noise Ratio

Cite this

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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.",
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Effects of noise and reverberation on virtual sound localization for listeners with bilateral cochlear implants. / Zheng, Yunfang; Koehnke, Janet; Besing, Joan; Spitzer, Jaclyn.

In: Ear and Hearing, Vol. 32, No. 5, 01.09.2011, p. 569-572.

Research output: Contribution to journalArticle

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AU - Koehnke, Janet

AU - Besing, Joan

AU - Spitzer, Jaclyn

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AB - 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.

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