NDLI: Acoustic properties of vowel production in prelingually deafened Mandarin-speaking children with cochlear implants.

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Acoustic properties of vowel production in prelingually deafened Mandarin-speaking children with cochlear implants.

Content Provider	Europe PMC
Author	Yang, Jing Brown, Emily Fox, Robert A. Xu, Li
Copyright Year	2015
Abstract	The present study examined the acoustic features of vowel production in Mandarin-speaking children with cochlear implants (CIs). The subjects included 14 native Mandarin-speaking, prelingually deafened children with CIs (2.9–8.3 yr old) and 60 age-matched, normal-hearing (NH) children (3.1–9.0 years old). Each subject produced a list of monosyllables containing seven Mandarin vowels: [i, a, u, y, ɤ, ʅ, ɿ]. Midpoint F1 and F2 of each vowel token were extracted and normalized to eliminate the effects of different vocal tract sizes. Results showed that the CI children produced significantly longer vowels and less compact vowel categories than the NH children did. The CI children's acoustic vowel space was reduced due to a retracted production of the vowel [i]. The vowel space area showed a strong negative correlation with age at implantation (r = −0.80). The analysis of acoustic distance showed that the CI children produced corner vowels [a, u] similarly to the NH children, but other vowels (e.g., [ʅ, ɿ]) differently from the NH children, which suggests that CI children generally follow a similar developmental path of vowel acquisition as NH children. These findings highlight the importance of early implantation and have implications in clinical aural habilitation in young children with CIs.
Related Links	https://europepmc.org/backend/ptpmcrender.fcgi?accid=PMC4636503&blobtype=pdf
Page Count	9
ISSN	00014966
Volume Number	138
DOI	10.1121/1.4932165
PubMed Central reference number	PMC4636503
Issue Number	5
PubMed reference number	26627755
Journal	The Journal of the Acoustical Society of America [J Acoust Soc Am]
e-ISSN	15208524
Language	English
Publisher	Acoustical Society of America
Publisher Date	2015-11-01
Access Restriction	Open
Rights License	0001-4966/2015/138(5)/2791/9/$30.00 Copyright © 2015 Acoustical Society of America
Content Type	Text
Resource Type	Article
Subject	Acoustics and Ultrasonics Arts and Humanities

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