1 ## Copyright (C) 2009 Muthiah Annamalai <muthiah.annamalai@uta.edu>
3 ## This program is free software; you can redistribute it and/or modify it under
4 ## the terms of the GNU General Public License as published by the Free Software
5 ## Foundation; either version 3 of the License, or (at your option) any later
8 ## This program is distributed in the hope that it will be useful, but WITHOUT
9 ## ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 ## FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
13 ## You should have received a copy of the GNU General Public License along with
14 ## this program; if not, see <http://www.gnu.org/licenses/>.
18 ## xt = sampled2continuous( xn , T, t )
20 ## Calculate the x(t) reconstructed
21 ## from samples x[n] sampled at a rate 1/T samples
24 ## t is all the instants of time when you need x(t)
25 ## from x[n]; this time is relative to x[0] and not
28 ## This function can be used to calculate sampling rate
29 ## effects on aliasing, actual signal reconstruction
30 ## from discrete samples.
32 function xt = sampled2continuous( xn , T, t )
38 xn = reshape( xn, N, 1 );
39 [TT,tt]= meshgrid(T*(0:N-1)',t);
40 S = sinc((tt -TT)./T);