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%???exa120504.m;????例12.5.4?說明一維小波包的剪切、分割和組合?????
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clear;

load?noisdopp;
x=noisdopp;

%?用db1小波包分解信號x到第3層
%?采用shannon熵的標準
wpTree=wpdec（x3‘db1‘‘shannon‘）;
plot（wpTree）;