?Rs=30;?Rp=1;?T=0.0001;
wp=4000*pi;?ws=12000*pi;
[NWn]=buttord（wpwsRpRs‘s‘）;
[ba]=butter（NWn‘s‘）;
[bzaz]=bilinear（ba1/T）;
w=0:0.05*pi:pi;
[Hw]=freqz（bzazw）;
figure（2）;
subplot（221）plot（w/pi20*log10（abs（H）））;grid;axis（[01-10010]）;
xlabel（‘頻率（HZ）‘）;ylabel（‘振幅（dB）‘）;
title（‘雙線性變換法設計的低通濾波器‘）
subplot（222）plot（w/pi180/pi*unwrap（angle（H）））;grid;axis（[01-20010]）;
xlabel（‘頻率（HZ）‘）;ylabel（‘相位（rad/s）‘）;

?屬性????????????大小?????日期????時間???名稱
-----------?---------??----------?-----??----

?????文件????????509??2010-09-15?11:54??xinhao\dtwindows.m

?????文件????????507??2010-09-15?11:55??xinhao\dzwindows.m

?????文件??????22060??2010-09-14?22:28??xinhao\jiemian.fig

?????文件???????1680??2010-09-15?13:20??xinhao\xinhao.m

?????文件????????457??2010-09-14?20:54??xinhao\dbatewozi.m

?????文件????????417??2010-09-15?11:53??xinhao\dwindows.m

?????文件????????464??2010-09-14?20:54??xinhao\hbatewozi.m

?????文件??????11351??2010-09-14?22:28??xinhao\jiemian.m

?????文件????????478??2010-09-14?22:53??xinhao\dtbatewozi.m

?????文件????????485??2010-09-14?22:53??xinhao\dzbatewozi.m

?????文件????????423??2010-09-15?13:29??xinhao\hwindows.m

?????文件???????9255??2010-09-15?13:28??xinhao\xinhao1.m

?????文件???????4656??2010-09-08?09:14??xinhao\六種濾波器.txt

?????文件???????2626??2010-09-14?18:50??xinhao\新建?文本文檔?（2）.txt

?????文件?????441856??2010-09-19?12:40??xinhao\課程設計.doc

?????文件??????72704??2010-09-01?23:04??xinhao\08級《現代信號處理》課程設計任務書.doc

?????目錄??????????0??2010-09-15?13:30??xinhao

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???????????????569928????????????????????17