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	Numerical simulation of pronunciation of vowels based on FE models of human supraglottal acoustic spaces Krampera, P. ; Horáček, Jaromír ; Dedouch, K. ; Vampola, T. Aproximate finite element models of acoustic spaces corresponding to the human vocal tract for English vowels /a/ and /i/, created according to the geometrical data published in the literature, are used for the numerical simulations. The pronunciation of the vowels /a/ and /i/ is simulated using transient analysis for the FE models. The pulse excitation of the vocal tract is realised by the time dependent displacement of a small circular plate moving at the position of the vocal folds. Detailed record
	Acoustic modal analysis of male vocal tract for Czech vowels Dedouch, K. ; Horáček, Jaromír ; Vampola, T. ; Švec, J. G. ; Kršek, P. ; Havlík, R. Acoustic frequency-modal characteristics of six finite element models of a male vocal tract are presented and analysed. The FE models correspond to the vocal tract geometries for the Czech vowels /a/, /e/, /i/, /o/, /u/ and /y/ were obtained using the magnetic resonance imaging technique. The computed results of the acoustaic modal analysis are in a reasonable agreement with the data on formants known form the Czech phonetic literature. Detailed record
	Finite element modeling of male vocal tract considering cleft palate Dedouch, K. ; Horáček, Jaromír ; Vampola, T. ; Černý, L. The FE models of vocal tract designed for vowel /a/ are analyzed considering the cleft palate. The first is designed using the published data, the second model corresponds to the reaal mate vocal tract designed by MRI data. Acoustic modal analysis is focused on investigation of the influence of the cleft palate on the formant frequencies. The results indicate, that after a small jump of the frequencies for a small cleft area the formant frequencies F1, F2 are influenced by the size of the cleft palate only very slightly. Detailed record
	Accoustic ananlysis of finite element models of supraglottal tract considering cleft palate Dedouch, K. ; Horáček, Jaromír ; Vampola, T. ; Vohradník, M. FE models of supraglottal tract for vowels /A/ and /I/ are analyzed considering the cleft palate. The modal analysis for the vowel /a/ indicate, that the formant frequencies F1 and F2 are influenced by the size of the cleft only slightly. The results Detailed record
	Design of finite element models of male vocal tract Dedouch, K. ; Horáček, Jaromír ; Vampola, T. ; Kršek, P. ; Švec, J. G. Two types FE models of vocal tract are presented. The geometry of supraglottal space, which corresponds to the English vowels was modelled fiest. However, the design of the model was very laborious thus a new procedure for direct transformation of the **ta from MRI to the finite element model was developed. Acoustic characteristics of the FE models are compared. Detailed record
	Interaction between human supraglottal space and flexible structural boundary Dedouch, K. ; Horáček, Jaromír ; Vampola, T. ; Vohradník, M. A finite element model of the male supraglottal vocal tract is investigated. Modal analysis is focused on the investigation of interaction of the supraglottal acoustic space with flexible part of the vocal tract represented by the bone of hard palate and cartilage in the larynx. Detailed record
	A note to the influence of absorptive areas on dynamic characteristics of cylindrical acoustic space Dedouch, K. ; Horáček, Jaromír ; Vampola, T. The subject of the paper is numerical FE modal analysis of cylindrical acoustic space. The absorptive areas are taken into account on the part of the boundary of the acoustic space. The influence of wall impedance on the natural frequencies, damping and modes of vibration of acoustic space is studied. Detailed record
	Modeling of the response of harmonically excited supraglottal Dedouch, K. ; Horáček, Jaromír ; Vampola, T. The goal of the paper is harmonic analysis of supraglottal acoustic space modelled by two FE models. The finite element models represent the male vocal tract in between the vocal folds and the lips. A small flexible plate vibrating in the plane of the vocal folds excites the first FE model. The second FE model is excited by the harmonic acoustic pressure applied in a small circular hole situated in the plane of vocal folds. The excited acoustic field in supraglottal space corresponding to the first FE model is identical with the acoustic modes relevant to the acoustic space with closed - open ends, i.e., to the first two formants. Detailed record
	Dynamic analysis of the human supraglottal space considering acoustic-structural interaction Dedouch, K. ; Horáček, Jaromír ; Veselý, Jan ; Vampola, T. ; Svec, J. G. A simplified finite element) model of the human vocal tract is presented and its fundamental vibroacoustic characteristics are analysed. Solid-fluid interaction and acoustic wall impedance are taken into account on some parts of the boundaries of the acoustic space. Detailed record
	Finite element model of supraglottal vocal track with consideration of wall impedance Dedouch, K. ; Horáček, Jaromír ; Vampola, T. Detailed record

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