s11.m

数字信号处理的MATLAB仿真加实验指导

%a08.m
N=200;n=0:1:N-1;
xn=sin(5/99*pi*n);
subplot(3,1,1);stem(n,xn);
Xk=dft(xn,N);
magXk=abs(Xk);
k=(0:length(magXk)'-1)*N/length(magXk);
subplot(3,1,2);stem(k,magXk);
phaXk=angle(Xk)*180/pi;
subplot(3,1,3);stem(k,phaXk);