Improved fold closure in mass-spring low-dimensional glottal models

This work presents a low-dimensional physical model of the glottis in which a 2-D fold displacement representation allows to represent both the vertical and longitudinal displacements of the folds. We use a one-mass mechanical model, coupled to aerodynamic driving forces, and we use a delay line representation to account for the propagation of the displacement on the body-cover. The waveform is characterized by means of a set of acoustic parameters (open quotient, speed quotient, return quotient, fundamental frequency F0, etc.) that are used in the literature as typical voice source quantification parameters. The paper provides comparisons between values of these parameters computed for the proposed model and for analytical models (LF) of the flow.