function?[ba]=afd_butt（OmegapOmegarApAr）;
if?Omegap<=0
????error（‘通帶邊緣必須大于0‘）
end
if?（Omegar<=Omegap）
????error（‘阻帶邊緣必須大于通帶邊緣必須‘）
end
N=ceil（（log10（（10^（0.1*Ar）-1）/（10^（0.1*Ap）-1）））/（2*log10（Omegar/Omegap）））;
fprintf（‘\n***巴特沃斯模擬低通濾波器階數(shù)=%2.0f\n‘N）;
OmegaC=Omegap/（（10^（0.1*Ap）-1）^（1/（2*N）））;
[ba]=u_buttap（NOmegaC）;

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----

?????文件????????367??2006-12-17?14:08??FIR濾波器設(shè)計(jì)\afd_butt.m

?????文件??????43854??2008-11-02?22:47??FIR濾波器設(shè)計(jì)\bp.err

?????文件???????3107??2008-11-02?22:42??FIR濾波器設(shè)計(jì)\bp.fda

?????文件??????40539??2008-10-29?21:53??FIR濾波器設(shè)計(jì)\bp.mdl

?????文件???????2442??2008-10-29?20:37??FIR濾波器設(shè)計(jì)\bs.m

?????文件????????538??2006-12-17?14:23??FIR濾波器設(shè)計(jì)\dir2cas.m

?????文件????????813??2006-12-15?23:50??FIR濾波器設(shè)計(jì)\FIR2.asv

?????文件??????70723??2006-12-16?00:06??FIR濾波器設(shè)計(jì)\FIR2.fig

?????文件????????841??2008-10-29?10:15??FIR濾波器設(shè)計(jì)\FIR2.m

?????文件????????420??2006-12-17?14:34??FIR濾波器設(shè)計(jì)\FIR.asv

?????文件??????70724??2006-12-16?00:05??FIR濾波器設(shè)計(jì)\FIR.fig

?????文件????????420??2006-12-17?14:34??FIR濾波器設(shè)計(jì)\FIR.m

?????文件???????1957??2008-10-29?11:31??FIR濾波器設(shè)計(jì)\FIR_1029.asv

?????文件???????2083??2008-10-29?21:01??FIR濾波器設(shè)計(jì)\FIR_BP.m

?????文件???????2072??2008-10-29?20:53??FIR濾波器設(shè)計(jì)\FIR_DZP.asv

?????文件???????2072??2008-10-29?20:55??FIR濾波器設(shè)計(jì)\FIR_DZP.m

?????文件???????2123??2008-11-02?22:45??FIR濾波器設(shè)計(jì)\FIR_HP.asv

?????文件???????2123??2008-10-29?20:52??FIR濾波器設(shè)計(jì)\FIR_HP.m

?????文件???????1957??2008-10-29?11:31??FIR濾波器設(shè)計(jì)\FIR_LP.m

?????文件????????154??2006-12-17?14:18??FIR濾波器設(shè)計(jì)\freqs_m.m

?????文件????????415??2008-10-29?11:31??FIR濾波器設(shè)計(jì)\freqz_m.asv

?????文件????????415??2008-10-29?11:31??FIR濾波器設(shè)計(jì)\freqz_m.m

?????文件????????305??2008-10-29?20:55??FIR濾波器設(shè)計(jì)\ideal_bp.m

?????文件????????314??2008-10-29?19:41??FIR濾波器設(shè)計(jì)\ideal_bs.m

?????文件????????261??2008-10-29?20:45??FIR濾波器設(shè)計(jì)\ideal_hp.m

?????文件????????240??2008-10-29?11:31??FIR濾波器設(shè)計(jì)\ideal_lp.asv

?????文件????????240??2008-10-29?11:31??FIR濾波器設(shè)計(jì)\ideal_lp.m

?????文件???????2987??2006-12-17?13:54??FIR濾波器設(shè)計(jì)\IIR1.asv

?????文件??????30937??2006-12-16?01:06??FIR濾波器設(shè)計(jì)\IIR1.fig

?????文件???????2983??2006-12-17?14:03??FIR濾波器設(shè)計(jì)\IIR1.m

............此處省略16個(gè)文件信息