www.pudn.com > returnzerocode.rar > Untitled5.m

global dt t f df N T 
 
   close all 
 
   k=input('取样点数＝2^k, k取10左右'); 
 
   if isempty(k), k=13; end 
 
   z=input('每个信号取样点数＝2^z,z