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Investigating the salient characteristics of clear speech that contribute to improved speech perception

McNeilly, Katherine (2017) Investigating the salient characteristics of clear speech that contribute to improved speech perception. Undergraduate Thesis, University of Pittsburgh. (Unpublished)

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Clear speech is one strategy used to promote successful communication strategy with people who have hearing loss. It occurs naturally and is more intelligible than speech used in conversational settings. However, the aspect of clear speech that makes it more intelligible than conversational speech is unknown. The aim of this study is to investigate the importance of clear speech formant contours. By hybridizing a conversational speech carrier sentence with a clear speech formant contour at a vowel-nasal transition in a target word, it will be determined whether clear speech formant contours impact the way normally hearing listeners understand an otherwise conversational speech sentence.
A total of 30 normally hearing subjects between the ages of 18 and 32 participated in this study. Participants listened to 30 clear, conversational, and manipulated sentences presented in Sine Wave Speech and were asked to identify the last word in the sentences out of four multiple choice answers. Participants responses were scored for number correct out of 10 for each of the 3 conditions. The results indicated no difference in identification between the conditions. Formant contour as an isolated cue as presented in this study does not appear to differentiate clear and conversational speech.


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Item Type: University of Pittsburgh ETD
Status: Unpublished
CreatorsEmailPitt UsernameORCID
McNeilly, Katherinekem175@pitt.edukem1750000-0001-7629-6002
ETD Committee:
TitleMemberEmail AddressPitt UsernameORCID
Committee ChairPalmer,
Committee MemberPratt,
Committee MemberBrown,
Committee MemberHeller,
Date: 25 April 2017
Date Type: Publication
Defense Date: 14 April 2017
Approval Date: 25 April 2017
Submission Date: 18 April 2017
Access Restriction: No restriction; Release the ETD for access worldwide immediately.
Number of Pages: 66
Institution: University of Pittsburgh
Schools and Programs: School of Health and Rehabilitation Sciences > Communication Science and Disorders
David C. Frederick Honors College
Degree: BPhil - Bachelor of Philosophy
Thesis Type: Undergraduate Thesis
Refereed: Yes
Uncontrolled Keywords: Clear Speech, Conversational Speech
Date Deposited: 25 Apr 2017 18:56
Last Modified: 26 Apr 2017 05:15


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