Petr Krupa

Vocal tract and glottal function during and after vocal exercising with resonance tube and straw.

J. Švec, J. Horáček, A. Laukkanen, 2013, Journal of voice : official journal of the Voice Foundation.

The effect of phonation into a straw on the vocal tract adjustments and formant frequencies. A preliminary MRI study on a single subject completed with acoustic results

Jaromír Horácek, Jan G. Svec, Anne-Maria Laukkanen, 2012, Biomed. Signal Process. Control..