National Repository of Grey Literature 161 records found  beginprevious152 - 161  jump to record: Search took 0.00 seconds. 
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.
Resonance properties of human vocal folds-examination in vivo
Švec, J. G. ; Horáček, Jaromír ; Šram, F. ; Veselý, Jan
The paper investigates dynamic characteristics (resonance frequencies and resonance modes of vibration) of living vocal folds. Vibrations of the vocal folds, excited externally using a shaker, were observed by means of a rigid endoscope and visualized using the methods of videostroboscopy and videokymography.
Numerical analysis of aeroelastic behaviour ot the vocal folds
Horáček, Jaromír ; Švec, J. G.
The study contributes to a more profound understanding of the mechanism of human voice production. The contribution is a continuation of recent studies of the authors where an original mathematical model for vibration of the vocal folds in the airflow coming from the human subglottal tract was developed. The model of the vocal fold was designed as a dynamic system with two degrees of freedom vibrating in the wall of a channel conveying air. Unsteady 1D flow theory for the inviscid incompressible fluid was used for the airflow. Here we present the results of the numerical solution which yields the vibration characteristics (eigenfrequencies, mode shapes of vibration and damping) of the aeroelastic system including the instability thresholds.
Experimental study of the vocal-fold vibration in excised larynx: measurement set-up and techniques
Horáček, Jaromír ; Švec, J. G. ; Veselý, Jan ; Vilkman, E.
The study presents the experimental arrangements and methodology for measuring the dynamic and phonation characteristics of human vocal folds. The experiments were focused mainly on non-linear vibration effects when bifurcation appears during phonation by changing, for example, the tension of the vocal folds.
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.
Počítačová simulace lidského hlasu s využitím aeroelastického modelu hlasivek a MKP modelu vokálního traktu člověka
Horáček, Jaromír ; Šidlof, Petr ; Švec, J. G. ; Griffond-Boitier, F.
The developed finite element (FE) model of real male vocal tract that corresponds to the Czech vowel /a/ is used for numerical simulation of phonation. The FE model was designed from the magnetic resonance images (MRI) of the subject during phonation. The acoustic signals for the vowel /a/ are simulated using the transient analysis of the FE model in time domain. For excitation of the acoustic supraglottal spaces the intraglottal pressure generated by the aeroelastic model of vocal folds self-oscillations is used. The frequency and time response functions are calculated in front of the mouth.
Daňové aspekty malých výrobců vína v ČR a ve vybraných zemích EU
Švec, Jiří ; Svátková, Slavomíra (advisor)
Tato bakalářská práce pojednává o novém institutu v oblasti spotřebních daní - malém výrobci vína. Porovnává statut malého výrobce vína v České republice, jak je nastaven zákonem o spotřebních daních, v jiných členských státech Evropské unie a v základních právních předpisech Evropské unie - směrnice a nařízení. Práce dále obsahuje informace o všech plátcích spotřební daně z vína, které upravuje zákon o spotřebních daních platných v České republice.

National Repository of Grey Literature : 161 records found   beginprevious152 - 161  jump to record:
See also: similar author names
11 ŠVEC, Jakub
17 ŠVEC, Jiří
1 Švec, J. G.
11 Švec, Jakub
21 Švec, Jan
5 Švec, Jaroslav
17 Švec, Jiří
2 Švec, Josef
21 Švec, Ján
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