Mercurial > hg > octave-lyh
annotate scripts/signal/hamming.m @ 11188:4cb1522e4d0f
Use function handle as input to cellfun,
rather than quoted function name or anonymous function wrapper.
author | Rik <octave@nomad.inbox5.com> |
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date | Wed, 03 Nov 2010 17:20:56 -0700 |
parents | 1bf0ce0930be |
children | 1740012184f9 |
rev | line source |
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8920 | 1 ## Copyright (C) 1995, 1996, 1997, 1998, 2000, 2002, 2005, 2006, 2007, 2009 |
7017 | 2 ## Andreas Weingessel |
3426 | 3 ## |
3922 | 4 ## This file is part of Octave. |
5 ## | |
6 ## Octave is free software; you can redistribute it and/or modify it | |
7 ## under the terms of the GNU General Public License as published by | |
7016 | 8 ## the Free Software Foundation; either version 3 of the License, or (at |
9 ## your option) any later version. | |
3426 | 10 ## |
3922 | 11 ## Octave is distributed in the hope that it will be useful, but |
3191 | 12 ## WITHOUT ANY WARRANTY; without even the implied warranty of |
13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
3426 | 14 ## General Public License for more details. |
15 ## | |
3191 | 16 ## You should have received a copy of the GNU General Public License |
7016 | 17 ## along with Octave; see the file COPYING. If not, see |
18 ## <http://www.gnu.org/licenses/>. | |
3191 | 19 |
3449 | 20 ## -*- texinfo -*- |
21 ## @deftypefn {Function File} {} hamming (@var{m}) | |
22 ## Return the filter coefficients of a Hamming window of length @var{m}. | |
3191 | 23 ## |
9051
1bf0ce0930be
Grammar check TexInfo in all .m files
Rik <rdrider0-list@yahoo.com>
parents:
8920
diff
changeset
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24 ## For a definition of the Hamming window, see e.g., A. V. Oppenheim & |
8484
895d49a7e36a
[docs] "Discrete-Time Signal Processing" => @cite{Discrete-Time Signal Processing}
Brian Gough <bjg@gnu.org>
parents:
7017
diff
changeset
|
25 ## R. W. Schafer, @cite{Discrete-Time Signal Processing}. |
3449 | 26 ## @end deftypefn |
3191 | 27 |
3457 | 28 ## Author: AW <Andreas.Weingessel@ci.tuwien.ac.at> |
29 ## Description: Coefficients of the Hamming window | |
3191 | 30 |
31 function c = hamming (m) | |
3426 | 32 |
3191 | 33 if (nargin != 1) |
6046 | 34 print_usage (); |
3191 | 35 endif |
3426 | 36 |
4030 | 37 if (! (isscalar (m) && (m == round (m)) && (m > 0))) |
3457 | 38 error ("hamming: m has to be an integer > 0"); |
3191 | 39 endif |
3426 | 40 |
3191 | 41 if (m == 1) |
42 c = 1; | |
43 else | |
44 m = m - 1; | |
45 c = 0.54 - 0.46 * cos (2 * pi * (0:m)' / m); | |
46 endif | |
3426 | 47 |
3191 | 48 endfunction |