Search Results - "SVEC, Jan G"

Vocal tract changes caused by phonation into a tube: A case study using computer tomography and finite-element modeling by VAMPOLA, Tomáš, LAUKKANEN, Anne-Maria, HORACEK, Jaromír, SVEC, Jan G

“…Phonation into a glass tube is a voice training and therapy method that leads to beneficial effects in voice production. It has not been known, however, what…”
Get full text

Visualization of system dynamics using phasegrams by Herbst, Christian T., Herzel, Hanspeter, Švec, Jan G., Wyman, Megan T., Fitch, W. Tecumseh

“…A new tool for visualization and analysis of system dynamics is introduced: the phasegram. Its application is illustrated with both classical nonlinear systems…”
Get full text

Complex vibratory patterns in an elephant larynx by Herbst, Christian T, Svec, Jan G, Lohscheller, Jörg, Frey, Roland, Gumpenberger, Michaela, Stoeger, Angela S, Fitch, W Tecumseh

“…Elephants' low-frequency vocalizations are produced by flow-induced self-sustaining oscillations of laryngeal tissue. To date, little is known in detail about…”
Get full text

Electroglottographic wavegrams: A technique for visualizing vocal fold dynamics noninvasively by Herbst, Christian T., Fitch, W. Tecumseh S., Švec, Jan G.

“…A method for analyzing and displaying electroglottographic (EGG) signals (and their first derivative, DEGG) is introduced: the electroglottographic wavegram…”
Get full text

Tutorial and Guidelines on Measurement of Sound Pressure Level in Voice and Speech by Švec, Jan G, Granqvist, Svante

“…Purpose: Sound pressure level (SPL) measurement of voice and speech is often considered a trivial matter, but the measured levels are often reported…”
Get more information

Electroglottographic Study of Seven Semi-Occluded Exercises: LaxVox, Straw, Lip-Trill, Tongue-Trill, Humming, Hand-Over-Mouth, and Tongue-Trill Combined With Hand-Over-Mouth by Andrade, Pedro Amarante, Wood, Gary, Ratcliffe, Philippa, Epstein, Ruth, Pijper, Anne, Svec, Jan G

“…Summary Introduction Semi-occluded vocal tract exercises (SOVTE) are often used in voice clinics. SOVTE change the acoustic vocal tract impedance in relation…”
Get full text

Laryngeal and Acoustic Analysis of Chest and Head Registers Extended Across a Three-Octave Range: A Case Study by Lehoux, Sarah, Popeil, Lisa, Švec, Jan G.

“…Voice registers are assumed to be related to different laryngeal adjustments, but objective evidence has been insufficient. While chest register is usually…”
Get full text

Guidelines for Selecting Microphones for Human Voice Production Research by Svec, Jan G, Granqvist, Svante

“…Purpose: This tutorial addresses fundamental characteristics of microphones (frequency response, frequency range, dynamic range, and directionality), which are…”
Get more information

Simulated Laryngeal High-Speed Videos for the Study of Normal and Dysphonic Vocal Fold Vibration by Aichinger, Philipp, Kumar, S. Pravin, Lehoux, Hugo, Švec, Jan G

“…Purpose: Laryngeal high-speed videoendoscopy (LHSV) has been recognized as a highly valuable modality for the scientific investigations of vocal fold (VF)…”
Get more information

Domestic cat larynges can produce purring frequencies without neural input by Herbst, Christian T., Prigge, Tamara, Garcia, Maxime, Hampala, Vit, Hofer, Riccardo, Weissengruber, Gerald E., Svec, Jan G., Fitch, W. Tecumseh

“…Most mammals produce vocal sounds according to the myoelastic-aerodynamic (MEAD) principle, through self-sustaining oscillation of laryngeal tissues.1,2 In…”
Get full text

Comparison of acceleration and impact stress as possible loading factors in phonation: a computer modeling study by Horácek, Jaromír, Laukkanen, Anne-Maria, Sidlof, Petr, Murphy, Peter, Svec, Jan G

“…Impact stress (the impact force divided by the contact area of the vocal folds) has been suspected to be the main traumatizing mechanism in voice production,…”
Get more information

Subglottal pressure oscillations in anechoic and resonant conditions and their influence on excised larynx phonations by Lehoux, Sarah, Hampala, Vít, Švec, Jan G.

“…Excised larynges serve as natural models for studying behavior of the voice source. Acoustic resonances inside the air-supplying tubes below the larynx (i.e.,…”
Get full text

Vocal Tract and Glottal Function During and After Vocal Exercising With Resonance Tube and Straw by Guzman, Marco, Laukkanen, Anne-Maria, Krupa, Petr, Horáček, Jaromir, Švec, Jan G, Geneid, Ahmed

“…Summary Objective The present study aimed to investigate the vocal tract and glottal function during and after phonation into a tube and a stirring straw…”
Get full text

Integrative Insights into the Myoelastic-Aerodynamic Theory and Acoustics of Phonation. Scientific Tribute to Donald G. Miller by Švec, Jan G., Schutte, Harm K., Chen, C. Julian, Titze, Ingo R.

“…In this tribute article to D.G. Miller, we review some historical and recent contributions to understanding the myoelastic-aerodynamic (MEAD) theory of…”
Get full text

Image analysis of videokymographic data by Novozamsky, Adam, Sedlar, Jiri, Zita, Ales, Sroubek, Filip, Flussef, Jan, Svec, Jan G., Vydrova, Jitka, Zitova, Barbara

“…Videokymography (VKG) is a high-speed medical imaging technique used in laryngology and phoniatrics for examination of vocal fold vibrations, it offers…”
Get full text

Validation of the Czech Version of the Voice Handicap Index by Krtickova, Jana, Svec, Jan G., Haviger, Jiri, Phadke, Ketaki Vasant, Drsata, Jakub, Skoloudik, Lukas, Homolac, Michal, Svejdova, Anna, Mejzlik, Jan, Hodacova, Lenka, Chrobok, Viktor

“…The present study aims to evaluate the reliability and construct validity of the Czech version of the Voice Handicap Index (VHI-CZ) and determine the cut-off…”
Get full text

Toward a consensus on symbolic notation of harmonics, resonances, and formants in vocalization by Titze, Ingo R, Baken, Ronald J, Bozeman, Kenneth W, Granqvist, Svante, Henrich, Nathalie, Herbst, Christian T, Howard, David M, Hunter, Eric J, Kaelin, Dean, Kent, Raymond D, Kreiman, Jody, Kob, Malte, Löfqvist, Anders, McCoy, Scott, Miller, Donald G, Noé, Hubert, Scherer, Ronald C, Smith, John R, Story, Brad H, Švec, Jan G, Ternström, Sten, Wolfe, Joe

Get full text

Influence of nasal cavities on voice quality: Computer simulations and experiments by Vampola, Tomáš, Horáček, Jaromír, Radolf, Vojtěch, Švec, Jan G., Laukkanen, Anne-Maria

“…Nasal cavities are known to introduce antiresonances (dips) in the sound spectrum reducing the acoustic power of the voice. In this study, a three-dimensional…”
Get full text

Influence of Noise Resulting From the Location and Conditions of Classrooms and Schools in Upper Egypt on Teachers' Voices by Phadke, Ketaki Vasant, Abo-Hasseba, Ahmed, Švec, Jan G., Geneid, Ahmed

“…Teachers are professional voice users, always at high risk of developing voice disorders due to high vocal demand and unfavorable environmental conditions…”
Get full text

Glottal Adduction and Subglottal Pressure in Singing by Herbst, Christian T, Hess, Markus, Müller, Frank, Švec, Jan G, Sundberg, Johan

“…Summary Previous research suggests that independent variation of vocal loudness and glottal configuration (type and degree of vocal fold adduction) does not…”
Get full text