Effects of Noise Suppression on Intelligibility: Experts' Opinions and Naive Normal-Hearing Listeners' Performance

Autor/inn/en	Hilkhuysen, Gaston L. M.; Gaubitch, Nikolay; Huckvale, Mark
Titel	Effects of Noise Suppression on Intelligibility: Experts' Opinions and Naive Normal-Hearing Listeners' Performance
Quelle	In: Journal of Speech, Language, and Hearing Research, 56 (2013) 2, S.404-415 (12 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1092-4388
DOI	10.1044/1092-4388(2012/11-0286)
Schlagwörter	Acoustics; Listening Comprehension; Expertise; Auditory Stimuli; Speech; Auditory Perception; Opinions; Foreign Countries; United Kingdom (London) + Suchen Sie Ihr Suchwort? Akustik; Hörverständnis; Expert appraisal; Auditive Stimulation; Speaking; Sprechen; Auditive Wahrnehmung; Akustische Wahrnehmung; Lehrmeinung; Ausland
Abstract	Purpose: In this study, the authors investigated how well experts can adjust the settings of a commercial noise-reduction system to optimize the intelligibility for naive normal-hearing listeners. Method: In Experiment 1, 5 experts adjusted parameters for a noise-reduction system while aiming to optimize intelligibility. The stimuli consisted of speech presented in car cabin noise or babble at 5 different signal-to-noise ratios SNRs). In Experiment 2, the effects of processing with these settings were measured with 10 listeners undertaking an intelligibility test. In Experiment 3, the intelligibility of a broad range of settings was investigated with another 10 listeners to determine whether the experts' chosen settings could have been improved. Results: Low Cronbach's alphas indicated that parameter settings varied considerably within and across experts. For very low SNRs, mean proposed settings differed from those for higher SNRs. The different settings had no significant effects on intelligibility for naive normal hearing listeners. At high SNRs, the settings proposed by experts were found to deteriorate intelligibility. Superior intelligibility for naive normal-hearing listeners was achievable from settings other than the ones proposed by the experts. Conclusion: While attempting to enhance noisy speech, experts may propose settings that deteriorate intelligibility for naive normal-hearing listeners. (Contains 4 tables and 4 figures.) (As Provided).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10