Visualisation of hypopharyngeal cavities and vocal-tract acoustic modelling

Computer Methods in Biomechanics and Biomedical Engineering
Kiyoshi HondaJianwu Dang

Abstract

The hypopharyngeal cavities consist of the laryngeal cavity and bilateral piriform fossa, constituting the bottom part of the vocal tract near the larynx. Visualisation of these cavities with magnetic resonance imaging (MRI) techniques reveals that during speech, the laryngeal cavity takes the form of a long-neck flask and the piriform fossa takes the form of a goblet of varying shapes: the former diminishes greatly in whispering and the latter disappears during deep inhalation. These cavities have been shown to exert significant acoustic effects at higher frequency spectra. In this study, acoustic experiments were conducted for male and female mechanical vocal tracts with the results that acoustic effects of those cavities determine the frequency spectra above 2 kHz, giving rise to peaks and zeros. An acoustic model of vowel production was proposed with three components: voice source, hypopharyngeal cavities and vocal tract proper, which provides effective means in controlling voice quality and expressing individual vocal characteristics.

References

Apr 1, 1974·The Journal of the Acoustical Society of America·J Sundberg
Jan 1, 1970·Folia phoniatrica·J Sundberg
Jan 1, 1997·The Journal of the Acoustical Society of America·J Dang, K Honda
Oct 31, 2006·The Journal of the Acoustical Society of America·Hironori TakemotoKiyoshi Honda
Oct 31, 2006·The Journal of the Acoustical Society of America·Tatsuya KitamuraKiyoshi Honda

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Citations

Jun 14, 2012·Biomechanics and Modeling in Mechanobiology·Yikun K WangOliver Röhrle
Feb 6, 2013·Journal of Voice : Official Journal of the Voice Foundation·Louisa TraserMatthias Echternach
Feb 15, 2013·Journal of Voice : Official Journal of the Voice Foundation·Sandra M Rua VenturaJoão Manuel R S Tavares
Apr 2, 2014·Journal of Speech, Language, and Hearing Research : JSLHR·Scott R Moisik, John H Esling
Sep 13, 2017·Journal of Speech, Language, and Hearing Research : JSLHR·Louisa TraserMatthias Echternach
Feb 28, 2017·Journal of Speech, Language, and Hearing Research : JSLHR·Scott Reid Moisik, Bryan Gick
Jun 3, 2018·The Journal of the Acoustical Society of America·Brad H StoryReid B Durtschi
Sep 3, 2017·The Journal of the Acoustical Society of America·Isao T Tokuda, Ryo Shimamura
Mar 3, 2019·The Journal of the Acoustical Society of America·Ju ZhangTatsuya Kitamura

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