fg_05_05c.m

英文书《Digital Signal Processing with Examples in MATLAB》附带的MATLAB实例

% fg_05_05c  Down-sampled waveform.
N=50; T=.1;
n=(0:N-1);
x=sin(2*pi*n/(N/2)).*exp(-4*n/N);
sp_fig(1);
set(gcf,'position',[400,40,300,200]);
axis([0 N*T -.25 .7]);
set(gca,'visible','off');
line(n*T,x,'linestyle','none','marker','*','color','k');
ht=text(N*T/3,.4,'T=0.1 \mus');
set(ht,'fontname','times','fontsize',32);