plotec.m

用dsp解压mp3程序的算法

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%    plotec.m - Plot en.dat and cn.dat for comparison
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

load -ascii en.dat;          % load en.dat into vector en
N = length(en); n = [0:N-1]; % time index
load -ascii cn.dat;          % load cn.dat into vector cn
plot(n,en,'r-',n,cn,'b--');  % plot both input and output
axis([0 N-1 -inf inf]);
ylabel('amplitude'); xlabel('time index');
title('Input and output waveforms');