Shaking Table Tests for Seismic Response of Oblique Overlapped Tunnel

Table 4

Frequency bands of wavelet packet decomposition.

Frequency band number	Frequency range (Hz)
1^st	0.1–6.26
2^nd	6.26–12.51
3^rd	12.51–18.76
4^th	18.76–25.01
5^th	25.01–31.26
6^th	31.26–37.51
7^th	37.51–43.76
8^th	43.76–50