clc;clear;
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%1原始圖像的產生
f1=50;?????????%??頻率1
f2=100;????????%??頻率2
fs=2*（f1+f2）;??%??采樣頻率
Ts=1/fs;???????%??采樣間隔
N=120;?????????%??采樣點數
n=1:N;
y=sin（2*pi*f1*n*Ts）+sin（2*pi*f2*n*Ts）;??%??正弦波混合
figure;
plot（y）;
title（‘Original?Signal‘）
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%?2.小波濾波器產生?
h=wfilters（‘db10‘‘l‘）;??%??低通
g=wfilters（‘db10‘‘h‘）;??%??高通

figure（2）;
subplot（211）;
plot（h）;
title（‘low_?pass?decompose?filter‘）;
subplot（212）;
plot（g）;
title（‘high_?pass?decompose?filter‘）;

h=[hzeros（1N-length（h））];??%??補零（圓周卷積，且增大分辨率變于觀察）
g=[gzeros（1N-length（g））];??%??補零（圓周卷積，且增大分辨率變于觀察）
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%