The effect on localization of frequency-specific gain reduction schemes when matched and mismatched across ears
| Autor: | Shawn S. Goodman, Ruth A. Bentler, Hua Ou |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
Male
Hearing aid Linguistics and Language medicine.medical_specialty Matching (statistics) Computer science medicine.medical_treatment Noise reduction Audiology Language and Linguistics Hearing Loss Bilateral Reduction (complexity) Speech and Hearing Hearing Aids medicine Humans Correction of Hearing Impairment Sound Localization Aged Aged 80 and over Filter (signal processing) Middle Aged Noise Acoustic Stimulation Speech Perception Female Algorithms |
| Zdroj: | International Journal of Audiology. 54:359-367 |
| ISSN: | 1708-8186 1499-2027 |
| Popis: | To evaluate the impact of non-adaptive matched and mismatched gain reduction schemes on localization in spatially-separated noise.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.Twenty-four adult bilateral hearing-aid users were enrolled in this study.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.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. |
| Databáze: | OpenAIRE |
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