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Table 1 Notations and variables in the two-mass model for the vocal folds

From: Classification of speech under stress based on modeling of the vocal folds and vocal tract

Notation/variable Description
m i The masses
x i The horizontal displacements measured from the rest (neutral) position x0
r i The equivalent viscous resistances
s i The force related to tissue elasticity
F i The force of airflow, which is determined by subglottal pressure
k i The stiffness coefficients
k c The coupling stiffness
η A coefficient of the nonlinear relations