Mercurial > hg > octave-nkf
annotate scripts/signal/bartlett.m @ 12107:1fc9fd052f0c release-3-2-x
fix typo in expm
| author | Jaroslav Hajek <highegg@gmail.com> |
|---|---|
| date | Wed, 25 Nov 2009 12:05:03 +0100 |
| parents | 1bf0ce0930be |
| children | 1740012184f9 |
| rev | line source |
|---|---|
| 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} {} bartlett (@var{m}) | |
| 22 ## Return the filter coefficients of a Bartlett (triangular) window of | |
| 23 ## length @var{m}. | |
| 3191 | 24 ## |
|
9051
1bf0ce0930be
Grammar check TexInfo in all .m files
Rik <rdrider0-list@yahoo.com>
parents:
8920
diff
changeset
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25 ## For a definition of the Bartlett 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
|
26 ## R. W. Schafer, @cite{Discrete-Time Signal Processing}. |
| 3449 | 27 ## @end deftypefn |
| 3191 | 28 |
| 3457 | 29 ## Author: AW <Andreas.Weingessel@ci.tuwien.ac.at> |
| 30 ## Description: Coefficients of the Bartlett (triangular) window | |
| 3191 | 31 |
| 32 function c = bartlett (m) | |
| 3426 | 33 |
| 3191 | 34 if (nargin != 1) |
| 6046 | 35 print_usage (); |
| 3191 | 36 endif |
| 3426 | 37 |
| 4030 | 38 if (! (isscalar (m) && (m == round (m)) && (m > 0))) |
| 3457 | 39 error ("bartlett: m has to be an integer > 0"); |
| 3191 | 40 endif |
| 3426 | 41 |
| 3191 | 42 if (m == 1) |
| 43 c = 1; | |
| 44 else | |
| 45 m = m - 1; | |
| 46 n = fix (m / 2); | |
| 4172 | 47 c = [2*(0:n)/m, 2-2*(n+1:m)/m]'; |
| 3191 | 48 endif |
| 49 | |
| 50 endfunction |