Figure 11.

Comparison of signals of GUW in time and frequency domain. Top: Excitation signal (output of function generator). Middle: Signal acquired with the LDV with $S_0$ wave package at $t\approx 70\mathsf{\mu }\mathrm{s}$ and $A_0$ wave package at $t\approx 180\mathsf{\mu }\mathrm{s}$. Bottom: Signal of the MEMS vibrometer with electrical cross-talk at $t\approx 50\mathsf{\mu }\mathrm{s}$ and $A_0$ wave package at $t\approx 180\mathsf{\mu }\mathrm{s}$.