【文件属性】：
文件名称：matlab实验4.doc
文件大小：276KB
文件格式：DOC
更新时间：2023-01-16 19:34:02
MATLAB英文版 含代码
MATLAB实验四
Section:
Laboratory Exercise 4
LINEAR, TIME-INVARIANT DISCRETE-TIME SYSTEMS: FREQUENCY-DOMAIN REPRESENTATIONS
4.1 TRANSFER FUNCTION AND FREQUENCY RESPONSE
Project 4.1 Transfer Function Analysis
Answers:
Q4.1 The modified Program P3_1 to compute and plot the magnitude and phase spectra of a moving average filter of Eq. (2.13) for 0 2 is shown below:
w=0:pi/511:2*pi;
M=input('M= ');
num=ones(1,M)/M;
h=freqz(num,1,w);
subplot(2,1,1);
plot(w/pi,abs(h));grid;
title('H(e^{j\omega})幅度谱');
xlabel('\omega/\pi');ylabel('振幅');
subplot(2,1,2);
plot(w/pi,angle(h));grid;
title('相位谱 H(e^{j\omega})');
xlabel('\omega/\pi');ylabel('以弧度为单位的相位');