Journal article
Effects of Release Time and Directionality on Unilateral and Bilateral Hearing Aid Fittings in Complex Sound Fields
Journal of the American Academy of Audiology, Vol.12(10), pp.534-544
11/01/2001
DOI: 10.1055/s-0042-1745644
PMID: 11791940
Abstract
Abstract
In studies to date, the effectiveness of the directional microphone has been investigated independently of the signal processing scheme used in the hearing aid. In addition, the number and placement of the background noise speakers can create an advantage for a particular polar pattern (i.e., cardioid, supercardioid, and hypercardioid) in any laboratory design. With these considerations in mind, the purpose of this investigation was twofold: (1) to determine the effect of different amplitude-compression release times on speech perception ability in noise, measured with directional microphone hearing aids, and (2) to determine the impact of environment (classroom vs anechoic chamber) on those measures. Ten subjects with mild to moderate sensorineural hearing loss participated. Using an eight-speaker complex sound field, speech perception was assessed in an anechoic chamber and a typical classroom environment. None of the release times resulted in superior performance in either the anechoic or classroom environment.
Abbreviations:
ANOVA = analysis of variance, BTE = behind the ear, HINT = Hearing in Noise Test, ITE = in the ear, KEMAR = Knowles Electronics Mannikin for Acoustic Research, RBCF = randomized blocks completely factorial, RT = reverberation time, SNR = signal-to-noise ratio, SPIN = Speech Perception in Noise (test), TR = release time
Details
- Title: Subtitle
- Effects of Release Time and Directionality on Unilateral and Bilateral Hearing Aid Fittings in Complex Sound Fields
- Creators
- Marni L. Novick - University of IowaRuth A. Bentler - University of IowaAndrew Dittberner - University of IowaGregory A. Flamme - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Journal of the American Academy of Audiology, Vol.12(10), pp.534-544
- Publisher
- Thieme Medical Publishers, Inc
- DOI
- 10.1055/s-0042-1745644
- PMID
- 11791940
- ISSN
- 1050-0545
- eISSN
- 2157-3107
- Language
- English
- Date published
- 11/01/2001
- Academic Unit
- Communication Sciences and Disorders
- Record Identifier
- 9984383901702771
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