Volumetric EBCT imaging of the vocal tract applied to male falsetto singing

Kenneth Tom, Ingo R. Titze, Eric A. Hoffman, Brad H. Story

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

As part of an analysis by synthesis approach to studying vocal intensity control in falsetto register, volumetric imaging of the vocal tract (the upper airway from the glottis to the lips) using electron beam computed tomography was performed on a classically trained singer, a countertenor, who uses a falsetto singing technique. Eight pitch and loudness conditions were imaged, a subset of which will be presented here. Each set of scans consisted of contiguous 3 mm axial `slices' encompassing the arch of the hard palate superiorly and the first tracheal ring inferiorly. Images were analyzed in three stages: image segmentation, 3D airway reconstruction and airway measurement. The vocal tract airway was segmented from surrounding tissue by assigning airway voxels a unique gray scale value. Reconstruction of the vocal tract in three dimensions was accomplished using shape based interpolation on the segmented images. Cross-sectional areas and vocal tract length were acquired from shape based interpolated data. Vocal tract area functions derived from these measurements were used to simulate the subject's phonations, which in turn allowed estimation of glottal and supraglottal contributions to vocal intensity.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsEric A. Hoffman
Pages132-142
Number of pages11
StatePublished - Jan 1 1996
Externally publishedYes
EventMedical Imaging 1996: Physiology and Function from Multidimensional Images - Newport Beach, CA, USA
Duration: Feb 11 1996Feb 13 1996

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume2709
ISSN (Print)0277-786X

Other

OtherMedical Imaging 1996: Physiology and Function from Multidimensional Images
CityNewport Beach, CA, USA
Period2/11/962/13/96

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

Cite this

Tom, K., Titze, I. R., Hoffman, E. A., & Story, B. H. (1996). Volumetric EBCT imaging of the vocal tract applied to male falsetto singing. In E. A. Hoffman (Ed.), Proceedings of SPIE - The International Society for Optical Engineering (pp. 132-142). (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 2709).