--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/m-toolbox/classes/@specwin/win_sft5f.m	Wed Nov 23 19:22:13 2011 +0100
@@ -0,0 +1,39 @@
+% WIN_SFT5F returns SFT5F 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_sft5f.m,v 1.5 2011/05/25 07:30:09 mauro Exp $
+%
+
+function varargout = win_sft5f(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} = 0.1881 - 0.36923 * cos (z) + ...
+                     0.28702 * cos (2 * z) - 0.13077 * cos (3 * z) + 0.02488 * cos (4 * z);
+      
+    case 'define'
+      % Make window struct
+      w.type         = 'SFT5F';
+      w.alpha        = 0;
+      w.psll         = 57.3;
+      w.rov          = 78.5;
+      w.nenbw        = 4.3412;
+      w.w3db         = 4.2910;
+      w.flatness     = -0.0025;
+      w.len          = N;
+      w.skip         = 0;
+      
+      varargout{1}   = w;
+  end
+  
+  % END