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	Experimental investigation of acoustic characteristics of 3D human vocal tract model with nasal cavities Radolf, Vojtěch ; Horáček, Jaromír ; Košina, Jan ; Vampola, T. The following experiments were carried out to be later used in the verification of a complex\nmathematical model of human voice production. Acoustic resonance characteristics of a 3D human voca tract model without and with nasal and paranasal cavities were measured in two different ways: The excitation was realized by (1) self-oscillating vocal folds replica and (2) by sine-tone sweeps from an earphone placed instead of the vocal folds. The resulting resonance and antiresonance frequencies were found to be comparable for both excitation signals. Detailed record
	Numerical investigation of acoustic characteristics of 3D human vocal tract model with nasal cavities Vampola, T. ; Štorkán, J. ; Horáček, Jaromír ; Radolf, Vojtěch Acoustic resonance characteristics of 3D human vocal tract model without and with nasal and\nparanasal cavities were computed. Nasal cavities (NC) form the side branches of the human vocal tract and exhibit antiresonance and resonance properties which influence the produced voice quality. Developed FE models of acoustic spaces of nasal and vocal tract for vowel /a:/ are used to study the influence of (NC) on phonation. Acoustics frequency-modal characteristics are studied by modal analysis and numerical simulation of acoustic signals in time domain is performed by transient analysis of the FE models. Detailed record
	Phonation characteristics of self-oscillating vocal folds replica with and without the model of the human vocal tract Horáček, Jaromír ; Bula, Vítězslav ; Košina, Jan ; Radolf, Vojtěch The experimental study presents in vitro measurements of phonation characteristics performed on the developed 1:1 scaled replica of human vocal folds. The aerodynamic, vibration and acoustic characteristics measured with and without the model of the human vocal tract for vowel [u:] are compared. Detailed record

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