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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