N=5;wc=0.35;
[ba]=butter（Nwc）;
h=filter（bay）;
H=fft（h）;
magh=abs（H）;
sound（h）;
N2=5;wc2=0.75;
[b2a2]=butter（Nwc2‘high‘）;
z=filter（b2a2y）;
Z=fft（z）;
magz=abs（Z）;
sound（z）;

?屬性????????????大小?????日期????時(shí)間???名稱(chēng)
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?????文件?????855508??2010-04-22?12:47??波形分離\新建文件夾\Bird.mat

?????文件?????103280??2010-04-16?11:20??波形分離\新建文件夾\combine.mat

?????文件????????190??2010-04-21?22:47??波形分離\新建文件夾\main.m

?????文件?????123392??2010-04-16?11:20??波形分離\新建文件夾\SignalSystem_project.ppt

?????文件?????855508??2010-04-22?12:47??波形分離\新建文件夾\train.mat

?????文件??????30238??2010-04-21?22:48??波形分離\新建文件夾\火車(chē)聲.jpg

?????文件??????18432??2010-04-21?22:49??波形分離\新建文件夾\火車(chē)聲頻譜.jpg

?????文件??????25300??2010-04-21?22:47??波形分離\新建文件夾\鳥(niǎo)叫.jpg

?????文件??????20822??2010-04-21?22:49??波形分離\新建文件夾\鳥(niǎo)叫頻譜.jpg

?????目錄??????????0??2010-04-22?12:48??波形分離\新建文件夾

?????目錄??????????0??2010-04-22?12:43??波形分離

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??????????????2032670????????????????????11