fg_07_06.m

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

% fg_07_06          Normal distribution of A-D output.
%
x=0:4095;
mu=2000; sigma=600; x1=2000; x2=2500;
p=exp(-(x-mu).^2/(2*sigma^2))/(sigma*sqrt(2*pi));
sp_fig(1,9,4);
set(gca,'position',[.1200 .200 .800 .600]);
set(gca,'fontsize',16);
line(x,p,'color','b'); grid;
x=[x1:x2;x1:x2];
y=[zeros(1,x2-x1+1);p(x1:x2)];
line(x,y,'color','r');
xlabel('x'); ylabel('p(x)');
erf1=sum(p(x1+1:x2-1))+.5*(p(x1)+p(x2))
erf2=.5*erf((x2-mu)/(sigma*sqrt(2)))
Pr=erfx(2000,600,500)