Matlab 绘制零极点图
画零极点b=[1 2 1]; a=[1 -0.5 -0.005 0.3];figure(1);zplane(b, a);画脉冲响应num=[0 1 2 1]; den=[1 -0.5 -0.005 0.3];h=impz(num, den);%脉冲响应figure(2);stem(h, '.');%画脉冲响应画频率响应[H, w]=freqz(num, den);%频率响应figure(3);plot(w/pi, abs(H));...
