% 當(dāng)前的延拓模式是補(bǔ)零
% 產(chǎn)生原始信號
x = randn(1,200);
% 計算x的shannon熵
e1 = wentropy(x,'shannon')
% 計算x的對數(shù)能量熵
e2 = wentropy(x,'log energy')
% 計算x的閾值熵，閾值取為0.2
e3 = wentropy(x,'threshold',0.2)
% 計算x的“sure”熵，閾值等于3
e4 = wentropy(x,'sure',3)
% 計算x的范數(shù)熵，范數(shù)指數(shù)為1.1
e5 = wentropy(x,'norm',1.1)