Figure 3.

Schematic representation of the cross-section of the 3DM of the vocal folds. The stiffness of anchor springs, longitudinal springs and vertical springs are indicated with $k_{r,s}^a$, $k_{r,s}^l$, $k_{r,s}^v$ with s=1,…,5 from inferior to superior. The subscript r means the lateral right side of the vocal fold (i=1,…,5). Likewise, the stiffness of different springs on the lateral left side are symbolized as $k_{l,s}^a$, $k_{l,s}^l$, $k_{l,s}^v$, with index i=6,…,10. The thickness of the mass element located in plane s is labeled as h_s. The position of the mass element m_i,s is denoted with 3D-components x_i,s, y_i,s, z_i,s. The damping r_i,s for each mass element is not shown so as to keep clarity of the drawing.