Add a useful package (from Source forge) for octave

[CreaPhase.git] / octave_packages / signal-1.1.3 / gmonopuls.m

diff --git a/octave_packages/signal-1.1.3/gmonopuls.m b/octave_packages/signal-1.1.3/gmonopuls.m
new file mode 100644 (file)
index 0000000..304bb79
--- /dev/null
+++ b/octave_packages/signal-1.1.3/gmonopuls.m
@@ -0,0 +1,25 @@
+## Copyright (C) 2007 Sylvain Pelissier <sylvain.pelissier@gmail.com>
+##
+## 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{y}] =} gmonopuls(@var{t},@var{fc})
+## Return the gaussian monopulse.
+## @end deftypefn
+
+function [y] = gmonopuls(t, fc = 1e3)
+  if (nargin<1 || nargin > 2), print_usage; end
+  if fc < 0 , error("fc must be positive"); end
+  y = 2*sqrt(exp(1)) .* pi.*t.*fc.*exp(-2 .* (pi.*t.*fc).^2);
+endfunction