MATLAB实验题!!用凯塞窗设计一个数字带通滤波器，设计指标为：?

pi'.35*pi;
wc1=(ws1+wp1)/2;
Rp=1.*w_han
[dbclear;hold on;ws2=0;
ideal_lp(wc2;close;n=[0,1);ylabel('ws1=0;
h=(hd2-hd1):1;pi;),db),N),grd;Rs=60;
wp1=0,N);wp2=0;
w_han=(kaiser(N;
hd1=ideal_lp(wc1,mag;db'
plot(w/.65*pi;xlabel('2,5;,N).2*pi.8*pi;);w/wc2=(ws2+wp2)/
hd2=ideal_lp(wc2;
ideal_lp(wc1,N),w]=freqz_m(h.658))',pha:N-1];
N=49;clc

matlab自带的fdatool吧。，就是在命令行打fdatool。。简单说来