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The perception of apparent auditory source width in hearing-impaired adults

Whitmer, William M.; Seeber, Bernhard U.; Akeroyd, Michael A.

Authors

Bernhard U. Seeber



Abstract

In a previous study [Whitmer, Seeber and Akeroyd, J. Acoust. Soc. Am. 132, 369-379 (2012)], it was demonstrated that older hearing-impaired (HI) listeners produced visual sketches of headphone-presented noises that were insensitive to changes in interaural coherence. The current study further explores this insensitivity by comparing (a) binaural temporal fine-structure (TFS) resolution and (b) sound localization precision to (c) auditory source width judgments. Thirty-five participants aged 26-81 years with normal to moderately impaired hearing (a) discriminated interaurally phase-shifted tones from diotic tones presented over headphones, (b) located 500-ms speech-spectrum filtered click trains presented over loudspeakers between ±30° in quiet, and (c) sketched the perceived width of low-pass, high-pass, and speech-spectrum noise stimuli presented over loudspeakers from 0° and simultaneously from ±45° at attenuations of 0-20 dB to generate partially coherent stimuli. The results showed a decreasing sensitivity to width with age and impairment which was related to binaural TFS threshold: the worse one's threshold-which was correlated with age-the less the perceived width increased with decreasing interaural coherence. These results suggest that senescent changes to the auditory system do not necessarily lead to perceptions of broader, more diffuse sound images based on interaural coherence.

Journal Article Type Article
Publication Date Jun 1, 2014
Journal The Journal of the Acoustical Society of America
Electronic ISSN 1520-8524
Publisher Nature Publishing Group
Peer Reviewed Peer Reviewed
Volume 135
Issue 6
APA6 Citation Whitmer, W. M., Seeber, B. U., & Akeroyd, M. A. (2014). The perception of apparent auditory source width in hearing-impaired adults. Nature Energy, 135(6), https://doi.org/10.1121/1.4875575
DOI https://doi.org/10.1121/1.4875575
Publisher URL https://asa.scitation.org/doi/10.1121/1.4875575
Copyright Statement Copyright information regarding this work can be found at the following address: http://eprints.nottingh.../end_user_agreement.pdf
Additional Information © 2014 Acoustical Society of America

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Copyright Statement
Copyright information regarding this work can be found at the following address: http://eprints.nottingham.ac.uk/end_user_agreement.pdf





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