378361.fig.005a
(a)   Synthetic echo waveform of a chestnut veneer from a distance of 20 cm
378361.fig.005b
(b) Synthetic echo waveform of a cherry veneer from a distance of 20 cm
378361.fig.005c
(c) Synthetic echo waveform of a maple veneer from a distance of 20 cm
Figure 5: Waveforms of echoes from synthetic pulses from different wood veneers.