Table 3: Summary of acoustic parameters of natural pulses from three different wood species.

Wood Acoustic parameters (mean ± standard deviation)
𝑇 (ms) 𝑁 Max MaxWA (n.u.) MinWA (n.u.)

Chestnut 2 0 . 4 7 ± 0 . 8 3 2 2 . 8 ± 0 . 8 0 . 0 7 4 ± 0 . 0 1 8 0 . 0 9 4 ± 0 . 0 1 8
Cherry 1 8 . 9 2 ± 0 . 7 2 2 0 . 0 ± 1 . 9 0 . 0 5 0 ± 0 . 0 2 0 0 . 0 5 2 ± 0 . 0 1 5
Maple 1 7 . 0 8 ± 0 . 4 6 3 5 . 8 ± 0 . 8 0 . 0 8 0 ± 0 . 0 4 0 0 . 1 0 2 ± 0 . 0 5 3

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