function?y=downspl（x）
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%?函數(shù)?Y=DOWMSPL（X）?對(duì)輸入序列進(jìn)行下抽樣，輸出序列?Y。
%?下抽樣是對(duì)輸入序列取其偶數(shù)位，舍棄奇數(shù)位。例如?x=[x1x2x3x4x5]，則?y=[x2x4].
%
%?Copyright?by?Zou?Yuhua?（?chenyusiyuan?）?Version:?1.0?Date:?2007-11-10
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
?
?
N=length（x）;?????????%?讀取輸入序列長(zhǎng)度
M=floor（N/2）;????????%?輸出序列的長(zhǎng)度是輸入序列長(zhǎng)度的一半（帶小數(shù)時(shí)取整數(shù)部分）
i=1:M;
y（i）=x（2*i）;

?屬性????????????大小?????日期????時(shí)間???名稱
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?????文件??????11274??2013-04-20?11:45??小波分解\camer.jpg

?????文件????????495??2013-04-20?11:18??小波分解\downspl.m

?????文件????????970??2013-04-20?11:17??小波分解\mydwt.m

?????文件???????1808??2013-04-20?11:17??小波分解\mydwt2.m

?????文件???????1769??2013-04-22?11:05??小波分解\mywavedec2.asv

?????文件???????1769??2013-04-22?11:07??小波分解\mywavedec2.m

?????文件???????1057??2013-04-24?17:49??小波分解\plotcoef.asv

?????文件???????1145??2013-04-25?16:08??小波分解\plotcoef.m

?????文件???????1072??2013-04-20?11:15??小波分解\plotcoef2one.m

?????文件????????890??2013-04-20?11:16??小波分解\sizcoef.m

?????文件???????8391??2013-04-18?17:42??小波分解\基準(zhǔn)-偵察.jpg

?????文件??????13004??2013-04-18?17:42??小波分解\實(shí)時(shí)-偵察.jpg

?????目錄??????????0??2013-04-25?09:21??小波分解

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