--- /dev/null
+## 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{w}] =} barthannwin(@var{L})
+## Compute the modified Bartlett-Hann window of lenght L.
+## @seealso{rectwin, bartlett}
+## @end deftypefn
+
+function [w] = barthannwin(L)
+ if (nargin < 1)
+ print_usage;
+ elseif (! isscalar(L) || L < 0)
+ error("L must be a positive integer");
+ endif
+ L = round(L);
+ N = L-1;
+ n = 0:N;
+
+ w = 0.62 -0.48.*abs(n./(L-1) - 0.5)+0.38*cos(2.*pi*(n./(L-1)-0.5));
+ w = w';
+endfunction