Document Detail


Speech production modifications produced by competing talkers, babble, and stationary noise.
MedLine Citation:
PMID:  19045809     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Noise has an effect on speech production. Stationary noise and babble have been used in the past but the effect of a competing talker, which might be expected to cause different types of disruption, has rarely been investigated. The current study examined the acoustic and phonetic consequences of N-talker noise on sentence production for a range of values of N from 1 (competing talker) to infinity (speech-shaped noise). The effect of noise on speech production increased with both the number of background talkers (N) and noise level, both of which act to increase the energetic masking effect of the noise. In a background of stationary noise, noise-induced speech was always more intelligible than speech produced in quiet, and the gain in intelligibility increased with N and noise level, suggesting that talkers modify their productions to ameliorate energetic masking at the ears of the listener. When presented in a competing talker background, speech induced by a competing talker was more intelligible than speech produced in quiet, but the scale of the effect was compatible with the energetic masking effect of the competing talker. No evidence was found of modifications to speech production which exploited the temporal structure of a competing talker.
Authors:
Youyi Lu; Martin Cooke
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  The Journal of the Acoustical Society of America     Volume:  124     ISSN:  1520-8524     ISO Abbreviation:  J. Acoust. Soc. Am.     Publication Date:  2008 Nov 
Date Detail:
Created Date:  2008-12-02     Completed Date:  2009-05-14     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7503051     Medline TA:  J Acoust Soc Am     Country:  United States    
Other Details:
Languages:  eng     Pagination:  3261-75     Citation Subset:  IM    
Affiliation:
Department of Computer Science, University of Sheffield, Regent Court, 211 Portobello Street, Sheffield S1 4DP, United Kingdom. y.lu@dcs.shef.ac.uk
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MeSH Terms
Descriptor/Qualifier:
Acoustics
Ear / physiology*
Hearing / physiology*
Humans
Noise*
Perceptual Masking*
Phonetics
Speech*
Speech Intelligibility*

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