Change search
ReferencesLink to record
Permanent link

Direct link
Influence of vocal tract geometry simplifications on the numerical simulation of vowel sounds
KTH, School of Computer Science and Communication (CSC), Speech, Music and Hearing, TMH.ORCID iD: 0000-0002-8991-1016
Show others and affiliations
2016 (English)In: Journal of Acoustical Society of America, ISSN 0001-4966, E-ISSN 1520-8524, Vol. 140, no 3, 1707-1718 p.Article in journal (Refereed) Published
Abstract [en]

For many years, the vocal tract shape has been approximated by one-dimensional (1D) area functions to study the production of voice. More recently, 3D approaches allow one to deal with the complex 3D vocal tract, although area-based 3D geometries of circular cross-section are still in use. However, little is known about the influence of performing such a simplification, and some alternatives may exist between these two extreme options. To this aim, several vocal tract geometry simplifications for vowels [ɑ], [i], and [u] are investigated in this work. Six cases are considered, consisting of realistic, elliptical, and circular cross-sections interpolated through a bent or straight midline. For frequencies below 4–5 kHz, the influence of bending and cross-sectional shape has been found weak, while above these values simplified bent vocal tracts with realistic cross-sections are necessary to correctly emulate higher-order mode propagation. To perform this study, the finite element method (FEM) has been used. FEM results have also been compared to a 3D multimodal method and to a classical 1D frequency domain model.

Place, publisher, year, edition, pages
Acoustical Society of America (ASA), 2016. Vol. 140, no 3, 1707-1718 p.
National Category
Fluid Mechanics and Acoustics
URN: urn:nbn:se:kth:diva-192600DOI: 10.1121/1.4962488OAI: diva2:971286
Available from: 2016-09-15 Created: 2016-09-15 Last updated: 2016-09-19Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Search in DiVA

By author/editor
Dabbaghchian, SaeedEngwall, Olov
By organisation
Speech, Music and Hearing, TMH
In the same journal
Journal of Acoustical Society of America
Fluid Mechanics and Acoustics

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 16 hits
ReferencesLink to record
Permanent link

Direct link