Fig. 3.

(Colour online) a Geometry of the considered problem, where the bottom edge ($z=0$) vibrates at a (4, 1) mode; b 3D acoustic pressure magnitudes ($\left|p_1\right|$, Pa); c out-of-plane $\left|p_1\right|$ [arrow in (b)]; and d in-plane $\left|p_1\right|$ on $r=0.56$ mm at the bottom edge. $r=\sqrt{x^2+y^2}$ and $\mathit{\theta }=arctan\left(y/x\right)$. The dashed line and the equation in (c) show the exponential fitting of the modelled acoustic pressure magnitudes