Measurement of acoustic input impedance of the human vocal tract models

0399631 - ÚT 2014 RIV CZ eng C - Konferenční příspěvek (zahraniční konf.)
Radolf, Vojtěch - Dlask, P. - Otčenášek, Z.
Measurement of acoustic input impedance of the human vocal tract models.
Interaction and Feedbacks 2013. Prague: Institute of Thermomechanics ASCR, v. v. i., 2013 - (Zolotarev, I.), s. 51-58. ISBN 978-80-87012-49-9.
[Interaction and Feedbacks 2013 /20./. Prague (CZ), 26.11.2013-27.11.2013]
Grant CEP: GA ČR GPP101/12/P579
Institucionální podpora: RVO:61388998
Klíčová slova: biomechanics of voice * human vocal tract * acoustic impedance
Kód oboru RIV: BI - Akustika a kmity

Input acoustic impedance of the human vocal tract models made of plexiglass was measured using the measurement system BIAS 6. Three models A, I, U for vowels /a:/, /i:/ and /u:/ had simplified rectangular shape of the channel with constant height 20 mm. The fourth model A2D had elliptical channel shape. Resulted resonance frequencies were within the known ranges of formant frequencies of the vowels. The resonances of default configurations varied for different boundary positions in relation to measuring microphone in the range of 0.5 %, 3.9 %, 2.1%, 6.7 % for the models A2D, A, I and U, respectively. The resonances of direct and reversed models with the output closed differed in the range of 0.5 % and 1.8 % for A2D and A model, respectively. The measured and computed resonances differed in the range from 3.8 % for A2D to 14.6 % for the model I.
Trvalý link: http://hdl.handle.net/11104/0228684