exam12_10.m

《小波分析理论与Matlab7实现例程》一书里面各章节的源码

clc;
clear;
% 当前的延拓模式是补零
% 产生原始信号
x = randn(1,200);
% 计算x的shannon熵
e1 = wentropy(x,'shannon')
% 计算x的对数能量熵
e2 = wentropy(x,'log energy')
% 计算x的阈值熵，阈值取为0.2
e3 = wentropy(x,'threshold',0.2)
% 计算x的“sure”熵，阈值等于3
e4 = wentropy(x,'sure',3)
% 计算x的范数熵，范数指数为1.1
e5 = wentropy(x,'norm',1.1)