www.pudn.com > leidaxitong.rar > a2d.asv

% 
% A/D转换 
% 
 
%A/D 
function [Y,ff1]=a2d(x,ff); 
 
N1=length(x); 
N=10;            %10位AD 
k=2; 
Vmax=5;          %电压5v 
ad1=Vmax/2.^N; 
ad2=round(x.*2^N/Vmax);  %取整 
ad=ad1.*ad2; 
for n=1:N1/k; 
Y(n)=ad(n*k);   %采样频率变为原来的一半， 
ff1(n)=ff(n*k)/k; 
end;