| Effects of on- and off-frequency maskers on speech recognition. | |
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MedLine Citation:
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PMID: 19354675 Owner: NLM Status: In-Data-Review |
Abstract/OtherAbstract:
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The present study investigated the relative influence of on- and off-frequency noise bands on speech recognition. The target speech stimuli consisted of 64 consonant-vowel consonants. The background noise was simplified speech spectrum-shaped noise or a sentence played backward. All stimuli were divided into 30 contiguous auditory filter width bands spanning 80 to 7563 Hz. Normal-hearing listeners were presented with 15 target speech bands having frequency locations determined randomly from trial to trial to simulate the quasi-random masking effect of noise on the distribution of speech cues across frequency. Results showed that high levels of noise had little impact on recognition when that noise resided only in the 15 off-target bands. Performance was similar when noise was present in all bands versus when present only in the 15 target bands, further indicating a modest effect of off-frequency noise on speech recognition. Performance with sine-wave vocoded speech bands was systematically lower than that obtained with the unprocessed speech bands, supporting the assumption that fine structure information plays a significant role in speech recognition in noise. |
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Authors:
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Frederic Apoux; Eric W Healy |
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Publication Detail:
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Type: Journal Article |
Journal Detail:
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Title: The Journal of the Acoustical Society of America Volume: 125 ISSN: 1520-8524 ISO Abbreviation: J. Acoust. Soc. Am. Publication Date: 2009 Apr |
Date Detail:
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Created Date: 2009-04-09 Completed Date: - Revised Date: - |
Medline Journal Info:
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Nlm Unique ID: 7503051 Medline TA: J Acoust Soc Am Country: United States |
Other Details:
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Languages: eng Pagination: 2526 Citation Subset: IM |
Affiliation:
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Dept. of Speech and Hearing Sci. The Ohio State Univ., 1070 Carmack Rd., Columbus, OH 43210, apoux.1@osu.edu. |
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From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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