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Estimation of vocal tract shape for VCV syllables for a speech training aid

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Title Estimation of vocal tract shape for VCV syllables for a speech training aid
 
Creator SHAH, MS
PANDEY, PC
 
Subject vocal tract shape estimation
speech training aids for hearing impaired children
place of stop closure
 
Description Display of vocal tract shape can be used in speech training aids for the hearing impaired children, as it provides a visual feedback of the articulatory efforts. Estimation of vocal tract shape, based on LPC and other analysis techniques, works satisfactorily for vowels but generally fails during stop closures. Indication of correct place of articulation is very important, particularly for non-labial consonants. In order to study the dynamics of the vocal tract shape estimation during transitions at vowel-consonant boundaries, we have used "areagram", a spectrogram-like two-dimensional (2D) display of estimated vocal tract cross-sectional area as a function of time and position along the tract length. Area estimation is based on reflection coefficients obtained from LPC analysis of speech. Based on estimated area during the transition segments preceding and following the stop closure, bivariate polynomial surfaces are obtained and these are used for estimation of the vocal tract shape during stop closure by performing 2D interpolation. The place of closure for various stop consonants could be estimated satisfactorily from the conic surface approximation.
 
Publisher IEEE
 
Date 2011-10-24T19:15:55Z
2011-12-15T09:11:43Z
2011-10-24T19:15:55Z
2011-12-15T09:11:43Z
2005
 
Type Proceedings Paper
 
Identifier 2005 27th Annual International Conference of the IEEE Engineering in Medicine and Biology Society, Vols 1-7,6642-6645
0-7803-8740-6
1094-687X
http://dx.doi.org/10.1109/IEMBS.2005.1616025
http://dspace.library.iitb.ac.in/xmlui/handle/10054/15502
http://hdl.handle.net/100/2244
 
Source 27th Annual International Conference of the IEEE-Engineering-in-Medicine-and-Biology-Society,Shanghai, PEOPLES R CHINA,AUG 31-SEP 03, 2005
 
Language English