Comparison of Computed and Measured Acoustic Input Impedance of the Human Vocal Tract Models

0427719 - ÚT 2015 US eng A - Abstrakt
Radolf, Vojtěch - Horáček, Jaromír
Comparison of Computed and Measured Acoustic Input Impedance of the Human Vocal Tract Models.
9th ICVPB. Salt Lake City: National Center for Voice and Speech, University of Utah, 2014. s. 68-68.
[International Conference on Voice Physiology and Biomechanics /9./. 10.04.2014-12.04.2014, Salt Lake City]
Grant CEP: GA ČR GPP101/12/P579
Institucionální podpora: RVO:61388998
Klíčová slova: biomechanics of voice * human vocal tract * acoustic input impedance * phonation into tubes
Kód oboru RIV: BI - Akustika a kmity

Acoustic resonance and antiresonance frequencies of the human vocal tract models were detected by means of acoustic input impedance measured by the system BIAS 6. The vocal tract models were made of plexiglass based on MRI data for vowels /a:/, /i:/ and /u:/. The experimental results were compared with the results of numerical simulations. Computed resonance and antiresonance frequencies differed from the experimental results in the range from 3.8 % to 14.6 % . Experiments with the vocal tract model /u:/ prolonged with the glass resonance tube, used in vocal exercises, confirmed significant decrease of the first resonance frequency down to F1 = 99 Hz compared to the result of mathematical modeling F1 = 78 Hz. The differences between higher resonances computed and measured up to 2.8 kHz were in the range from 1.6 % to 8.9 %, maximum difference of measured and computed antiresonances was 4.2 %.
Trvalý link: http://hdl.handle.net/11104/0233461