Morphological Variation in the Adult Hard Palate and Posterior Pharyngeal Wall

Autor/inn/en	Lammert, Adam; Proctor, Michael; Narayanan, Shrikanth
Titel	Morphological Variation in the Adult Hard Palate and Posterior Pharyngeal Wall
Quelle	In: Journal of Speech, Language, and Hearing Research, 56 (2013) 2, S.521-530 (10 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	1092-4388
DOI	10.1044/1092-4388(2012/12-0059)
Schlagwörter	Adults; Anatomy; Human Body; Individual Differences; Evaluation Methods; Statistical Analysis; Acoustics; Articulation (Speech) + Suchen Sie Ihr Suchwort? Anatomie; Menschlicher Körper; Individueller Unterschied; Statistische Analyse; Akustik
Abstract	Purpose: Adult human vocal tracts display considerable morphological variation across individuals, but the nature and extent of this variation has not been extensively studied for many vocal tract structures. There exists a need to analyze morphological variation and, even more basically, to develop a methodology for morphological analysis of the vocal tract. Such analysis will facilitate fundamental characterization of the speech production system, with broad implications from modeling to explaining interspeaker variability. Method: A data-driven methodology to automatically analyze the extent and variety of morphological variation is proposed and applied to a diverse subject pool of 36 adults. Analysis is focused on two key aspects of vocal tract structure: the midsagittal shape of the hard palate and the posterior pharyngeal wall. Result: Palatal morphology varies widely in its degree of concavity but also in anteriority and sharpness. Pharyngeal wall morphology, by contrast, varies mostly in terms of concavity alone. The distribution of morphological characteristics is complex, and analysis suggests that certain variations may be categorical in nature. Conclusion: Major modes of morphological variation are identified, including their relative magnitude, distribution, and categorical nature. Implications of these findings for speech articulation strategies and speech acoustics are discussed. (Contains 9 figures.) (As Provided).
Anmerkungen	American Speech-Language-Hearing Association (ASHA). 10801 Rockville Pike, Rockville, MD 20852. Tel: 800-638-8255; Fax: 301-571-0457; e-mail: subscribe@asha.org; Web site: http://jslhr.asha.org
Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10