view m-toolbox/classes/@specwin/win_hft248d.m @ 6:2b57573b11c7
database-connection-manager
Add utils.mysql.execute
author |
Daniele Nicolodi <nicolodi@science.unitn.it> |
date |
Mon, 05 Dec 2011 16:20:06 +0100 (2011-12-05) |
parents |
f0afece42f48 |
children |
|
line source
% WIN_HFT248D returns HFT248D window, with N points.
% If mode == 'define', the window values will be empty and all the features
% If mode == 'build', the window values will be calculated
%
% M Hewitson 18-05-07
%
% $Id: win_hft248d.m,v 1.5 2011/05/25 07:30:08 mauro Exp $
%
function varargout = win_hft248d(w, mode, N)
switch lower(mode)
case 'build'
n_args = nargin;
if n_args < 3
N = w.len;
end
% Calculate the values of the window
z = [0:N-1]./N * 2 * pi;
varargout{1} = (1 - 1.985844164102 * cos(z) + ...
1.791176438506 * cos (2 * z) - 1.282075284005 * cos (3 * z) + ...
0.667777530266 * cos (4 * z) - 0.240160796576 * cos (5 * z) + ...
0.056656381764 * cos (6 * z) - 0.008134974479 * cos (7 * z) + ...
0.000624544650 * cos (8 * z) - 0.000019808998 * cos (9 * z) + ...
0.000000132974 * cos (10 * z));
case 'define'
% Make window struct
w.type = 'HFT248D';
w.alpha = 0;
w.psll = 248.4;
w.rov = 84.1;
w.nenbw = 5.6512;
w.w3db = 5.5567;
w.flatness = 0.0009;
w.len = N;
w.skip = 0;
varargout{1} = w;
end
% END