Figure 1.
Comparison of wavelet decomposition tree and wavelet packet decomposition tree. (a) Wavelet decomposition tree at level 2; (b) Wavelet packet decomposition tree at level 2.
Official websites use .gov
A
.gov website belongs to an official
government organization in the United States.
Secure .gov websites use HTTPS
A lock (
) or https:// means you've safely
connected to the .gov website. Share sensitive
information only on official, secure websites.