Advances in Acoustics and Vibration

Research Article

Spectral Biomimetic Technique for Wood Classification Inspired by Human Echolocation

Table 5

Summary of acoustic parameters of natural and synthetic reference palatal clicks without echoes.
Click Acoustic parameters
𝑇 𝑁 Max MWA mWA 𝐹 1 𝐹 2 𝐹 3 RT 𝐼 (dB)
Natural 2 0 1 6 0 . 6 0 . 5 5 0 4 7 0 8 0 0 1 7 3
Synthetic 2 0 1 6 0 . 8 0 . 9 5 0 4 0 0 8 0 0 0 . 9 3 1 0 0
𝑇 : time duration; 𝑁 Max, MWA: maximum wave amplitude (normalized units); mWA: minimum wave amplitude (normalized units); 𝐹 1, 𝐹 2, 𝐹 3: frequency bands (Hz); RT: rise time (ms); 𝐼 : intensity (dB). Both pulses are considered ideal, so no errors are shown.