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Nonlinear Dynamic Analysis of Vowels in Cleft Palate Children with or without Hypernasality
Joint Authors
Nakano, Hiroyuki
Mishima, Katsuaki
Matsumura, Tatsushi
Ueyama, Yoshiya
Iida, Seiji
Moritani, Norifumi
Source
International Journal of Otolaryngology
Issue
Vol. 2012, Issue 2012 (31 Dec. 2012), pp.1-4, 4 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2011-12-06
Country of Publication
Egypt
No. of Pages
4
Main Subjects
Abstract EN
Objectives.
To clarify the difference between Lyapunov exponents (LEs) for cleft palate (CP) patients with hypernasality versus without hypernasality and to investigate the relationship between their LEs and nasalance scores (NSs).
Material and Methods.
Six CP patients with severe hypernasality (mean age 9.2 years) and six CP patients without hypernasality (mean age 8.0 years) were enrolled.
Five Japanese vowels were recorded at 44.1 KHz, and the NSs were measured simultaneously.
The mean first LE (mLE1) from all one-second intervals was computed.
Results.
The mLE1 for /o/ in patients with hypernasality was significantly higher than that in patients without hypernasality.
The correlation coefficients between the mLE1 and NS for all vowels were not statistically different.
Conclusion.
The voice signal of /o/ for the patients with hypernasality was more instable than in those without hypernasality.
The chaotic phenomenon was independent of nasal resonance in CP voice.
American Psychological Association (APA)
Mishima, Katsuaki& Nakano, Hiroyuki& Matsumura, Tatsushi& Moritani, Norifumi& Iida, Seiji& Ueyama, Yoshiya. 2011. Nonlinear Dynamic Analysis of Vowels in Cleft Palate Children with or without Hypernasality. International Journal of Otolaryngology،Vol. 2012, no. 2012, pp.1-4.
https://search.emarefa.net/detail/BIM-494867
Modern Language Association (MLA)
Mishima, Katsuaki…[et al.]. Nonlinear Dynamic Analysis of Vowels in Cleft Palate Children with or without Hypernasality. International Journal of Otolaryngology No. 2012 (2012), pp.1-4.
https://search.emarefa.net/detail/BIM-494867
American Medical Association (AMA)
Mishima, Katsuaki& Nakano, Hiroyuki& Matsumura, Tatsushi& Moritani, Norifumi& Iida, Seiji& Ueyama, Yoshiya. Nonlinear Dynamic Analysis of Vowels in Cleft Palate Children with or without Hypernasality. International Journal of Otolaryngology. 2011. Vol. 2012, no. 2012, pp.1-4.
https://search.emarefa.net/detail/BIM-494867
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-494867