plotxy.m

用dsp解压mp3程序的算法

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%    plotxy.m - plot both xn.dat and yn.dat
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

load -ascii xn.dat;
load -ascii yn.dat;
N = length(xn); n=[0:N-1];
plot(n,xn,'r-',n,yn,'b--');
axis([0 N-1 -inf inf]);
xlabel('time index n');
ylabel('amplitude');
title('Noisy and enhanced sinewaves');