A COMPARISON OF TWO TECHNIQUES THAT MEASURE VOCAL TRACT SHAPE

This study compares vocal tract shapes of four vowels for a single speaker estimated via analysis of magnetic resonance images and acoustic reflectometer measurements. The first and second resonances of the vocal tract shapes from the two different methods are compared to the first and second formants obtained from an acoustic analysis of the speech signal. It is demonstrated that speech production is compromised by the mouthpiece used for the acoustic reflectometer, and as such this tool is not useful for studying articulatory phonetics.

[1]  Jack J. Jiang,et al.  Age-related changes in human vocal tract configurations and the effects on speakers' vowel formant frequencies: A pilot study , 1999 .

[2]  P. W. Nye,et al.  Analysis of vocal tract shape and dimensions using magnetic resonance imaging: vowels. , 1991, The Journal of the Acoustical Society of America.

[3]  Jonathan Harrington,et al.  An acoustic comparison between New Zealand and Australian English vowels , 1998 .

[4]  C Ytterbergh,et al.  From sagittal distance to area. A study of transverse, vocal tract cross-sectional area. , 1987, Phonetica.

[5]  J. Fredberg,et al.  Airway area by acoustic reflections measured at the mouth. , 1980, Journal of applied physiology: respiratory, environmental and exercise physiology.

[6]  Jonathan Harrington,et al.  The Acoustic Theory of Speech Production , 1999 .

[7]  M. Sondhi,et al.  Determination of vocal-tract shape from impulse response at the lips. , 1971, The Journal of the Acoustical Society of America.

[8]  Shirley Dex,et al.  JR 旅客販売総合システム（マルス）における運用及び管理について , 1991 .

[9]  Gunnar Fant,et al.  Acoustic Theory Of Speech Production , 1960 .

[10]  Julien Epps,et al.  A novel instrument to measure acoustic resonances of the vocal tract during phonation , 1997 .

[11]  Steve An Xue,et al.  Changes in the human vocal tract due to aging and the acoustic correlates of speech production: a pilot study. , 2003, Journal of speech, language, and hearing research : JSLHR.

[12]  Johan Sundberg,et al.  From Sagittal Distance to Area , 1987 .

[13]  John E. Markel,et al.  Linear Prediction of Speech , 1976, Communication and Cybernetics.