fg_01_01.m

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

% fg_01_01  Illustration of sampled waveform.
x=[0,1,-1,2,5, 6,4,1,-2,-1];
y=resamp(x,1000);
%
sp_fig(1);
axis([0 10 -4 8]);
set(gca,'fontname','times','fontsize',18);
set(gca,'position',[.13 .15 .9-.13 .9-.15]);
set(gca,'xtick',[0:10]);
%
line(linspace(0,10,length(y)),y,'color','k');
line([0:9],x,'color','k','linestyle','none','marker','o');
grid on;
xlabel('Time (t)');
ylabel('Signal f(t)');
title('Sampled waveform; time step T=1s.');