function?[ba]?=?afd_butt（WpWsRpAs）;
?if?Wp?<=?0
?????????error（‘Passband?edge?must?be?larger?than?0‘）
?end
?if?Ws?<=?Wp
?????????error（‘Stopband?edge?must?be?larger?than?Passband?edge‘）
?end
?if?（Rp?<=?0）?|?（As??????????error（‘PB?ripple?and/or?SB?attenuation?ust?be?larger?than?0‘）
?end
?N?=?ceil（（log10（（10^（Rp/10）-1）/（10^（As/10）-1）））/（2*log10（Wp/Ws）））;
?fprintf（‘\n***?Butterworth?Filter?Order?=?%2.0f?\n‘N）
?OmegaC?=?Wp/（（10^（Rp/10）-1）^（1/（2*N）））;
?[ba]=u_buttap（NOmegaC）;

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

?????文件????????139??2013-12-30?15:23??huatu.m

?????文件??????34937??2014-01-08?10:54??lvbohoupinpu.jpg

?????文件??????38737??2014-01-02?14:21??lvbohoutu.jpg

?????文件???????1117??2014-01-08?10:53??lvboqianhoutuxingduibi.m

?????文件????????186??2014-01-08?10:21??moniditong.m

?????文件????????259??2014-01-08?09:42??monigaotong.m

?????文件??????24880??2014-01-08?19:10??t.txt

?????文件??????68866??2014-01-08?19:10??t1.txt

?????文件????????524??2014-01-02?12:54??u_buttap.m

?????文件??????27832??2013-12-30?15:23??untitled1.jpg

?????文件??????27730??2013-12-30?15:23??untitled2.jpg

?????文件??????42938??2014-01-08?19:27??x（n）.png

?????文件??????19533??2014-01-08?19:26??x（n）頻譜.png

?????文件?????109622??2014-01-08?15:04??xindianxinhao_simulink.mdl

?????文件???????1260??2014-01-08?09:09??xitonghanshudexiangying.m

?????文件??????26387??2014-01-08?19:10??Xn.txt

?????文件??????87740??2014-01-08?19:10??Xn1.txt

?????文件??????42649??2014-01-08?19:28??y（n）.png

?????文件??????17499??2014-01-08?19:27??y（n）頻譜.png

?????文件??????30191??2014-01-02?16:19??沖擊響應.jpg

?????文件??????15978??2014-01-08?19:32??低通濾波器.jpg

?????文件??????47884??2014-01-08?19:18??仿真圖.jpg

?????文件??????32977??2014-01-02?16:21??幅度和相位響應.jpg

?????文件??????14809??2014-01-02?16:04??高通濾波器.jpg

?????文件?????743424??2014-01-08?20:12??設計報告.doc

?????文件??????15865??2014-01-02?16:21??系統1零點和極點.jpg

?????文件??????20158??2014-01-02?16:21??系統2零點和極點.jpg

?????文件??????10088??2014-01-08?19:22??1.fda

?????文件?????118864??2014-01-08?09:21??1.txt

?????文件???????2797??2014-01-08?19:22??2.fda

............此處省略16個文件信息