Journal article
The effect on localization of frequency-specific gain reduction schemes when matched and mismatched across ears
International journal of audiology, Vol.54(6), pp.359-367
06/03/2015
DOI: 10.3109/14992027.2014.996822
PMID: 25649997
Abstract
Objective: To evaluate the impact of non-adaptive matched and mismatched gain reduction schemes on localization in spatially-separated noise. Design: Inspired by the function of commercial noise reduction algorithms, five frequency-specific gain reduction filter schemes were created, three for a modulated babble-noise and two for an unmodulated speech-shaped noise. Applying these schemes as both matched and mismatched conditions across ears, localization of five everyday sounds in noise was measured in a virtual environment using insert earphones. The performance in the reference scheme (no gain reduction in either ear) was measured as well. Study sample: Twenty-four adult bilateral hearing-aid users were enrolled in this study. Results: One of the two mismatched gain reduction schemes for the unmodulated noise had a small but negative impact on localization compared to the reference scheme. For that scheme more high-frequency reduction was noted than for the other schemes. Matching gain reduction across ears restored the deteriorated localization performance. No localization performance differences were observed in the modulated babble-noise regardless of whether the scheme was matched or mismatched across ears. Conclusions: The impact of noise-induced gain reduction on localization in noise was trivial in the study regardless of whether gain reduction schemes were matched or not across ears.
Details
- Title: Subtitle
- The effect on localization of frequency-specific gain reduction schemes when matched and mismatched across ears
- Creators
- Hua Ou - Department of Communication Sciences and Disorders, Illinois State UniversityRuth A Bentler - Department of Communication Sciences and Disorders, University of IowaShawn S Goodman - Department of Communication Sciences and Disorders, University of Iowa
- Resource Type
- Journal article
- Publication Details
- International journal of audiology, Vol.54(6), pp.359-367
- Publisher
- Taylor & Francis
- DOI
- 10.3109/14992027.2014.996822
- PMID
- 25649997
- ISSN
- 1499-2027
- eISSN
- 1708-8186
- Language
- English
- Date published
- 06/03/2015
- Academic Unit
- Communication Sciences and Disorders; Otolaryngology
- Record Identifier
- 9984002472302771
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