Vocal folds and ventricular bands in interaction: comparison between 'in vivo' measurements and theoretical predictions

Abstract

Period‐doubling occurrences have been found during singing phonations such as Mongolian Kargyraa throat singing or Sardinian A Tenore Bassu singing. The combined vibrations of vocal folds and ventricular bands have been observed during the production of such low‐pitch bass‐type sounds. The present study aims at better understanding the physical interaction between the ventricular‐bands vibration and the vocal‐folds self‐sustained oscillations. In this paper, the vibratory properties of both vocal folds and ventricular bands interaction are analysed on a professional singer by means of acoustical, electroglottographic signals and synchronized glottal images obtained by high‐speed cinematography. Using the detected glottal and ventricular areas, the aerodynamic behavior of the laryngeal system is simulated using a simplified aerodynamic modelling previously validated in vitro on vocal‐folds and ventricular‐bands replica. An estimate of the subglottal pressure along with the ventricular aperture extract...