H(z) 0.0798z(+0.6566x-) 1-053353)1-(0.620+03730z1-(06250-03731 b=conv(0,007981,0.656605%分子 a=conv(1,0.53351,1(0.625+0,3773i);%分母 a=conv(a,[1,(0.625-0.37731)); 分母 lane(b;a);%画零点极点图 h, w]= freqz (b, a); figure(2); plot(w/pi, abs(h); cm可以实现多项式相乘 20383020:38:30 5 b=conv([0, 0.0798], [1, 0.6566]); %分子 a=conv([1, -0.5335], [1, -(0.625+0.3773i)]); %分母 a=conv(a, [1, -(0.625-0.3773i)]); %分母 zplane(b,a); %画零点极点图 [h,w] = freqz(b,a); figure(2); plot(w/pi, abs(h)); conv( )可以实现多项式相乘 . 1 1 1 -1 -1 ( ) 0.0798 (1 0.6566 ) (1 0 5335 ) 1 (0.6250 0.3773 ) 1 (0.6250 0.3773 ) H z z z z i z i z − − − + = − − + − −        