>> n=-1:3;x=1:5;k=0:500;w=(pi/500)*k;X=x*(exp(-j*pi/500)).^(n'*k);magX=abs(X);angX=angle(X);subplot(2,1,1);plot(w/pi,magX);title('幅度响应');grid;ylabel('幅度');xlabel('以\pi为单位的频率');subplot(2,1,2);plot(w/pi,angX);title('相位响
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/12 04:18:37
![>> n=-1:3;x=1:5;k=0:500;w=(pi/500)*k;X=x*(exp(-j*pi/500)).^(n'*k);magX=abs(X);angX=angle(X);subplot(2,1,1);plot(w/pi,magX);title('幅度响应');grid;ylabel('幅度');xlabel('以\pi为单位的频率');subplot(2,1,2);plot(w/pi,angX);title('相位响](/uploads/image/z/3163789-37-9.jpg?t=%3E%3E+n%3D-1%3A3%3Bx%3D1%3A5%3Bk%3D0%3A500%3Bw%3D%28pi%2F500%29%2Ak%3BX%3Dx%2A%28exp%28-j%2Api%2F500%29%29.%5E%28n%27%2Ak%29%3BmagX%3Dabs%28X%29%3BangX%3Dangle%28X%29%3Bsubplot%282%2C1%2C1%29%3Bplot%28w%2Fpi%2CmagX%29%3Btitle%28%27%E5%B9%85%E5%BA%A6%E5%93%8D%E5%BA%94%27%29%3Bgrid%3Bylabel%28%27%E5%B9%85%E5%BA%A6%27%29%3Bxlabel%28%27%E4%BB%A5%5Cpi%E4%B8%BA%E5%8D%95%E4%BD%8D%E7%9A%84%E9%A2%91%E7%8E%87%27%29%3Bsubplot%282%2C1%2C2%29%3Bplot%28w%2Fpi%2CangX%29%3Btitle%28%27%E7%9B%B8%E4%BD%8D%E5%93%8D)
>> n=-1:3;x=1:5;k=0:500;w=(pi/500)*k;X=x*(exp(-j*pi/500)).^(n'*k);magX=abs(X);angX=angle(X);subplot(2,1,1);plot(w/pi,magX);title('幅度响应');grid;ylabel('幅度');xlabel('以\pi为单位的频率');subplot(2,1,2);plot(w/pi,angX);title('相位响
>> n=-1:3;x=1:5;
k=0:500;w=(pi/500)*k;
X=x*(exp(-j*pi/500)).^(n'*k);
magX=abs(X);angX=angle(X);
subplot(2,1,1);plot(w/pi,magX);title('幅度响应');grid;
ylabel('幅度');xlabel('以\pi为单位的频率');
subplot(2,1,2);plot(w/pi,angX);title('相位响应');grid;
ylabel('相位/\pi');xlabel('以\pi为单位的频率');
>> n=-1:3;x=1:5;k=0:500;w=(pi/500)*k;X=x*(exp(-j*pi/500)).^(n'*k);magX=abs(X);angX=angle(X);subplot(2,1,1);plot(w/pi,magX);title('幅度响应');grid;ylabel('幅度');xlabel('以\pi为单位的频率');subplot(2,1,2);plot(w/pi,angX);title('相位响
n=-1:3; %n=-1,0,1,2,3
x=1:5; %x=1,2,.,5
k=0:500; %k=0,1,.,500
w=(pi/500)*k; %w=pi/500*k,pi是3.1415926
X=x*(exp(-j*pi/500)).^(n'*k); %(.^)中点的意思是元素操作,^是次方, n' 是吧n置换 ,j是虚数
magX=abs(X); %abs(x)就是数学中的|X|
angX=angle(X); %angle(X)是找角度的
subplot(2,1,1) %图片排列想成矩阵,那么就有2行一列,这个图是第一个位置
plot(w./pi,magX); %画图(x轴,y轴)
title('幅度响应'); %标题
grid; %加格子
ylabel('幅度'); %y轴标题
xlabel('以\pi为单位的频率'); %x轴标题
subplot(2,1,2) %第二张图
plot(w/pi,angX)
title('相位响应');
grid;
ylabel('相位/\pi');
xlabel('以\pi为单位的频率');