## Copyright (C) 2018 Jens Ahrensfeld
## 
## This program is free software; you can redistribute it and/or modify it
## under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 3 of the License, or
## (at your option) any later version.
## 
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
## GNU General Public License for more details.
## 
## You should have received a copy of the GNU General Public License
## along with this program.  If not, see <http://www.gnu.org/licenses/>.

## -*- texinfo -*- 
## @deftypefn {Function File} {@var{retval} =} ppm_eval (@var{input1}, @var{input2})
##
## @seealso{}
## @end deftypefn

## Author: Jens Ahrensfeld <ahrensfeld@w2ess001vm>
## Created: 2018-10-17

function ppm_eval (kp, kn)

Tp = 200;	% 
Tp_s = 200 ;
hp = [ones(1, Tp_s)]; 

x = kp*[zeros(1, 10*Tp) ones(1, Tp) zeros(1, 20*Tp) ones(1, Tp) zeros(1, 10*Tp)];
x = x +  kn*randn(1, length(x));
n = 1:length(x);


y = filter(hp, 1, x)/Tp;


plot(n, x, n, y, '-r'); grid;

endfunction