Journal article
Vocal Tract Area Functions from Magnetic Resonance Imaging
The Journal of the Acoustical Society of America, Vol.100(1), pp.537-554
07/01/1996
DOI: 10.1121/1.415960
PMID: 8675847
Abstract
There have been considerable research efforts in the area of vocal tract modeling but there is still a small body of information regarding direct 3-D measurements of the vocal tract shape. The purpose of this study was to acquire, using magnetic resonance imaging (MRI), an inventory of speaker-specific, three-dimensional, vocal tract air space shapes that correspond to a particular set of vowels & consonants. A set of 18 shapes was obtained for one male subject who vocalized while being scanned for 12 vowels, three nasals, & three plosives. The 3-D shapes were analyzed to find the cross-sectional areas evaluated within planes always chosen to be perpendicular to the centerline extending from the glottis to the mouth to produce an "area function." This paper provides a speaker-specific catalogue of area functions for 18 vocal tract shapes. Comparisons of formant locations extracted from the natural (recorded) speech of the imaged subject & from simulations using the newly acquired area functions show reasonable similarity but suggest that the imaged vocal tract shapes may be somewhat centralized. Additionally, comparisons of the area functions reported in this study are compared with those from four previous studies & demonstrate general similarities in shape but also obvious differences that can be attributed to differences in imaging techniques, image processing methods, & anatomical differences of the imaged subjects. Adapted from the source document
Details
- Title: Subtitle
- Vocal Tract Area Functions from Magnetic Resonance Imaging
- Creators
- Brad Story - University of IowaIngo Titze - University of IowaEric Hoffman - University of Iowa
- Resource Type
- Journal article
- Publication Details
- The Journal of the Acoustical Society of America, Vol.100(1), pp.537-554
- DOI
- 10.1121/1.415960
- PMID
- 8675847
- ISSN
- 0001-4966
- eISSN
- 1520-8524
- Language
- English
- Date published
- 07/01/1996
- Academic Unit
- School of Music; Roy J. Carver Department of Biomedical Engineering; Radiology; Communication Sciences and Disorders; Internal Medicine
- Record Identifier
- 9984318712502771
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