0
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
1 % WIN_SFT3F returns SFT3F window, with N points.
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
2 % If mode == 'define', the window values will be empty and all the features
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
3 % If mode == 'build', the window values will be calculated
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
4 %
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
5 % M Hewitson 18-05-07
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
6 %
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
7 % $Id: win_sft3f.m,v 1.5 2011/05/25 07:30:09 mauro Exp $
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
8 %
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
9
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
10 function varargout = win_sft3f(w, mode, N)
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
11
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
12 switch lower(mode)
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
13
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
14 case 'build'
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
15 n_args = nargin;
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
16 if n_args < 3
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
17 N = w.len;
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
18 end
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
19 % Calculate the values of the window
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
20 z = [0:N-1]./N * 2 * pi;
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
21 varargout{1} = 0.26526 - 0.5 * cos (z) + 0.23474 * cos (2 * z);
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
22
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
23 case 'define'
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
24 % Make window struct
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
25 w.type = 'SFT3F';
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
26 w.alpha = 0;
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
27 w.psll = 31.7;
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
28 w.rov = 66.7;
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
29 w.nenbw = 3.1681;
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
30 w.w3db = 3.1502;
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
31 w.flatness = 0.0082;
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
32 w.len = N;
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
33 w.skip = 0;
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
34
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
35 varargout{1} = w;
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
36 end
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
37
|
Daniele Nicolodi <nicolodi@science.unitn.it>
parents:
diff
changeset
|
38 % END
|