Effects of masking noise on vowel and sibilant contrasts in normal-hearing speakers and postlingually deafened cochlear implant users.

Effects of masking noise on vowel and sibilant contrasts in normal-hearing speakers and postlingually deafened cochlear implant users. Research Abstract Details 

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Effects of masking noise on vowel and sibilant contrasts in normal-hearing speakers and postlingually deafened cochlear implant users. Abstract Text:

Joseph S Perkell,Margaret Denny,Harlan Lane,Frank Guenther,Melanie L Matthies,Mark Tiede,Jennell Vick,Majid Zandipour,Ellen Burton,

The role of auditory feedback in speech production was investigated by examining speakers' phonemic contrasts produced under increases in the noise to signal ratio (N/S). Seven cochlear implant users and seven normal-hearing controls pronounced utterances containing the vowels /i/, /u/, /e/ and /ae/ and the sibilants /s/ and /I/ while hearing their speech mixed with noise at seven equally spaced levels between their thresholds of detection and discomfort. Speakers' average vowel duration and SPL generally rose with increasing N/S. Average vowel contrast was initially flat or rising; at higher N/S levels, it fell. A contrast increase is interpreted as reflecting speakers' attempts to maintain clarity under degraded acoustic transmission conditions. As N/S increased, speakers could detect the extent of their phonemic contrasts less effectively, and the competing influence of economy of effort led to contrast decrements. The sibilant contrast was more vulnerable to noise; it decreased over the entire range of increasing N/S for controls and was variable for implant users. The results are interpreted as reflecting the combined influences of a clarity constraint, economy of effort and the effect of masking on achieving auditory phonemic goals-with implant users less able to increase contrasts in noise than controls.

Effects of masking noise on vowel and sibilant contrasts in normal-hearing speakers and postlingually deafened cochlear implant users. Publishing Authors By Initials

JS Perkell,M Denny,H Lane,F Guenther,ML Matthies,M Tiede,J Vick,M Zandipour,E Burton,

For similar psychological phenomena and processes: mental processes: perception: auditory perception: speech perception research abstracts see: psychological phenomena and processes: mental processes: perception: auditory perception: speech perception research

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Effects of masking noise on vowel and sibilant contrasts in normal-hearing speakers and postlingually deafened cochlear implant users. Journal Published:

PUBLICATION TYPE: Research Support, N.I.H., Extr

Journal: The Journal of the Acoustical Society of America

VOLUME: 121

Page Numbers: 505-18

Journal Abbreviation: J. Acoust. Soc. Am.

ISSN: 0001-4966

DAY: 3

MONTH: Jan

YEAR: 2007

Effects of masking noise on vowel and sibilant contrasts in normal-hearing speakers and postlingually deafened cochlear implant users. Information

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LANGUAGE: eng

NlmUniqueID: 7503051

Effects of masking noise on vowel and sibilant contrasts in normal-hearing speakers and postlingually deafened cochlear implant users. Keywords Mesh Terms:

KEYWORDS: Speech Perception

MESH TERMS: therapy

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Grant and Affiliation Information for Effects of masking noise on vowel and sibilant contrasts in normal-hearing speakers and postlingually deafened cochlear implant users.

AFFILIATION: Speech Communication Group, Research Laboratory of Electronics, and Department of Brain and Cognitive Sciences, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, USA. perkell@speech.mit.edu

Country: United States

AGENCY: United States NIDCD

GRANT: R01DC003007

ACRONYM: DC

MEDLINETA: J Acoust Soc Am

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