Spectral Biomimetic Technique for Wood Classification Inspired by Human Echolocation

Table 1

Summary of acoustic parameters of synthetic pulses from three different wood species.

Wood	Acoustic parameters (mean ± standard deviation)
	T(ms)	NMax	MaxWA (n.u.)	MinWA (n.u.)
Chestnut	16.72±0.30	39.0±1.7	0.070±0.000	0.110±0.000
Cherry	17.13±0.26	39.2±0.5	0.070±0.000	0.110±0.000
Maple	17.08±0.46	35.8±0.8	0.060±0.005	0.100±0.000

𝑇: time duration; 𝑁Max: number of maxima; MaxWA: maximum wave amplitude (normalized units); MinWA: minimum wave amplitude (normalized units).