octave-lyh: scripts/signal/fftfilt.m annotate

annotate scripts/signal/fftfilt.m @ 17173:bb60b1bb47cf

view.m: Fix args undefined error when calling with two arguments

author	Max Brister <max@2bass.com>
date	Sat, 03 Aug 2013 17:23:44 -0600
parents	b9ffacf34c2d
children	d6499c14021c

rev	line source
14138 72c96de7a403 maint: update copyright notices for 2012 John W. Eaton <jwe@octave.org> parents: 13092 diff changeset	1 ## Copyright (C) 1994-2012 John W. Eaton
2313 5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	2 ##
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	3 ## This file is part of Octave.
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	4 ##
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	5 ## Octave is free software; you can redistribute it and/or modify it
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	6 ## under the terms of the GNU General Public License as published by
7016 93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6046 diff changeset	7 ## the Free Software Foundation; either version 3 of the License, or (at
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6046 diff changeset	8 ## your option) any later version.
2313 5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	9 ##
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	10 ## Octave is distributed in the hope that it will be useful, but
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	11 ## WITHOUT ANY WARRANTY; without even the implied warranty of
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	13 ## General Public License for more details.
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	14 ##
5ca126254d15 [project @ 1996-07-11 21:25:22 by jwe] jwe parents: 2312 diff changeset	15 ## You should have received a copy of the GNU General Public License
7016 93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6046 diff changeset	16 ## along with Octave; see the file COPYING. If not, see
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 6046 diff changeset	17 ## <http://www.gnu.org/licenses/>.
1026 9fc405c8c06c [project @ 1995-01-11 21:17:01 by jwe] jwe parents: 904 diff changeset	18
3367 0748b03c3510 [project @ 1999-11-20 14:52:38 by jwe] jwe parents: 2847 diff changeset	19 ## -- texinfo --
0748b03c3510 [project @ 1999-11-20 14:52:38 by jwe] jwe parents: 2847 diff changeset	20 ## @deftypefn {Function File} {} fftfilt (@var{b}, @var{x}, @var{n})
3426 f8dde1807dee [project @ 2000-01-13 08:40:00 by jwe] jwe parents: 3367 diff changeset	21 ##
3367 0748b03c3510 [project @ 1999-11-20 14:52:38 by jwe] jwe parents: 2847 diff changeset	22 ## With two arguments, @code{fftfilt} filters @var{x} with the FIR filter
0748b03c3510 [project @ 1999-11-20 14:52:38 by jwe] jwe parents: 2847 diff changeset	23 ## @var{b} using the FFT.
3426 f8dde1807dee [project @ 2000-01-13 08:40:00 by jwe] jwe parents: 3367 diff changeset	24 ##
3367 0748b03c3510 [project @ 1999-11-20 14:52:38 by jwe] jwe parents: 2847 diff changeset	25 ## Given the optional third argument, @var{n}, @code{fftfilt} uses the
17091 641c47e8bcae doc: expand on FFT size argument to fftfilt Mike Miller <mtmiller@ieee.org> parents: 16436 diff changeset	26 ## overlap-add method to filter @var{x} with @var{b} using an @var{n}-point
641c47e8bcae doc: expand on FFT size argument to fftfilt Mike Miller <mtmiller@ieee.org> parents: 16436 diff changeset	27 ## FFT. The FFT size must be an even power of 2 and must be greater than
641c47e8bcae doc: expand on FFT size argument to fftfilt Mike Miller <mtmiller@ieee.org> parents: 16436 diff changeset	28 ## or equal to the length of @var{b}. If the specified @var{n} does not
641c47e8bcae doc: expand on FFT size argument to fftfilt Mike Miller <mtmiller@ieee.org> parents: 16436 diff changeset	29 ## meet these criteria, it is automatically adjusted to the nearest value
641c47e8bcae doc: expand on FFT size argument to fftfilt Mike Miller <mtmiller@ieee.org> parents: 16436 diff changeset	30 ## that does.
3890 9652abf2c297 [project @ 2002-04-04 23:24:39 by jwe] jwe parents: 3457 diff changeset	31 ##
9652abf2c297 [project @ 2002-04-04 23:24:39 by jwe] jwe parents: 3457 diff changeset	32 ## If @var{x} is a matrix, filter each column of the matrix.
12546 39ca02387a32 Improve docstrings for a number of functions. Rik <octave@nomad.inbox5.com> parents: 11523 diff changeset	33 ## @seealso{filter, filter2}
3367 0748b03c3510 [project @ 1999-11-20 14:52:38 by jwe] jwe parents: 2847 diff changeset	34 ## @end deftypefn
2312 204cc7db6f4a [project @ 1996-07-11 21:20:36 by jwe] jwe parents: 2311 diff changeset	35
5428 2a16423e4aa0 [project @ 2005-08-23 18:38:27 by jwe] jwe parents: 5307 diff changeset	36 ## Author: Kurt Hornik <Kurt.Hornik@wu-wien.ac.at>
2312 204cc7db6f4a [project @ 1996-07-11 21:20:36 by jwe] jwe parents: 2311 diff changeset	37 ## Created: 3 September 1994
204cc7db6f4a [project @ 1996-07-11 21:20:36 by jwe] jwe parents: 2311 diff changeset	38 ## Adapted-By: jwe
787 c5d35bb139b6 [project @ 1994-10-11 00:34:13 by jwe] jwe parents: diff changeset	39
11469 c776f063fefe Overhaul m-script files to use common variable name between code and documentation. Rik <octave@nomad.inbox5.com> parents: 7017 diff changeset	40 function y = fftfilt (b, x, n)
787 c5d35bb139b6 [project @ 1994-10-11 00:34:13 by jwe] jwe parents: diff changeset	41
2325 b5568c31ee2c [project @ 1996-07-15 22:20:21 by jwe] jwe parents: 2313 diff changeset	42 ## If N is not specified explicitly, we do not use the overlap-add
2303 5cffc4b8de57 [project @ 1996-06-24 09:15:24 by jwe] jwe parents: 1887 diff changeset	43 ## method at all because loops are really slow. Otherwise, we only
5cffc4b8de57 [project @ 1996-06-24 09:15:24 by jwe] jwe parents: 1887 diff changeset	44 ## ensure that the number of points in the FFT is the smallest power
5cffc4b8de57 [project @ 1996-06-24 09:15:24 by jwe] jwe parents: 1887 diff changeset	45 ## of two larger than N and length(b). This could result in length
5cffc4b8de57 [project @ 1996-06-24 09:15:24 by jwe] jwe parents: 1887 diff changeset	46 ## one blocks, but if the user knows better ...
2325 b5568c31ee2c [project @ 1996-07-15 22:20:21 by jwe] jwe parents: 2313 diff changeset	47
787 c5d35bb139b6 [project @ 1994-10-11 00:34:13 by jwe] jwe parents: diff changeset	48 if (nargin < 2 \|\| nargin > 3)
6046 34f96dd5441b [project @ 2006-10-10 16:10:25 by jwe] jwe parents: 5428 diff changeset	49 print_usage ();
787 c5d35bb139b6 [project @ 1994-10-11 00:34:13 by jwe] jwe parents: diff changeset	50 endif
2325 b5568c31ee2c [project @ 1996-07-15 22:20:21 by jwe] jwe parents: 2313 diff changeset	51
3890 9652abf2c297 [project @ 2002-04-04 23:24:39 by jwe] jwe parents: 3457 diff changeset	52 transpose = (rows (x) == 1);
9652abf2c297 [project @ 2002-04-04 23:24:39 by jwe] jwe parents: 3457 diff changeset	53
9652abf2c297 [project @ 2002-04-04 23:24:39 by jwe] jwe parents: 3457 diff changeset	54 if (transpose)
9652abf2c297 [project @ 2002-04-04 23:24:39 by jwe] jwe parents: 3457 diff changeset	55 x = x.';
9652abf2c297 [project @ 2002-04-04 23:24:39 by jwe] jwe parents: 3457 diff changeset	56 endif
9652abf2c297 [project @ 2002-04-04 23:24:39 by jwe] jwe parents: 3457 diff changeset	57
787 c5d35bb139b6 [project @ 1994-10-11 00:34:13 by jwe] jwe parents: diff changeset	58 [r_x, c_x] = size (x);
c5d35bb139b6 [project @ 1994-10-11 00:34:13 by jwe] jwe parents: diff changeset	59 [r_b, c_b] = size (b);
c5d35bb139b6 [project @ 1994-10-11 00:34:13 by jwe] jwe parents: diff changeset	60
13092 186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	61 if (! isvector (b))
186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	62 error ("fftfilt: B must be a vector");
186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	63 endif
186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	64
186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	65 if (ndims (x) != 2)
186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	66 error ("fftfilt: X must be a 1-D or 2-D array");
787 c5d35bb139b6 [project @ 1994-10-11 00:34:13 by jwe] jwe parents: diff changeset	67 endif
2325 b5568c31ee2c [project @ 1996-07-15 22:20:21 by jwe] jwe parents: 2313 diff changeset	68
3890 9652abf2c297 [project @ 2002-04-04 23:24:39 by jwe] jwe parents: 3457 diff changeset	69 l_b = r_b * c_b;
9652abf2c297 [project @ 2002-04-04 23:24:39 by jwe] jwe parents: 3457 diff changeset	70 b = reshape (b, l_b, 1);
2325 b5568c31ee2c [project @ 1996-07-15 22:20:21 by jwe] jwe parents: 2313 diff changeset	71
787 c5d35bb139b6 [project @ 1994-10-11 00:34:13 by jwe] jwe parents: diff changeset	72 if (nargin == 2)
2303 5cffc4b8de57 [project @ 1996-06-24 09:15:24 by jwe] jwe parents: 1887 diff changeset	73 ## Use FFT with the smallest power of 2 which is >= length (x) +
5cffc4b8de57 [project @ 1996-06-24 09:15:24 by jwe] jwe parents: 1887 diff changeset	74 ## length (b) - 1 as number of points ...
13092 186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	75 n = 2 ^ nextpow2 (r_x + l_b - 1);
11469 c776f063fefe Overhaul m-script files to use common variable name between code and documentation. Rik <octave@nomad.inbox5.com> parents: 7017 diff changeset	76 B = fft (b, n);
13092 186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	77 y = ifft (fft (x, n) .* B(:, ones (1, c_x)));
787 c5d35bb139b6 [project @ 1994-10-11 00:34:13 by jwe] jwe parents: diff changeset	78 else
2303 5cffc4b8de57 [project @ 1996-06-24 09:15:24 by jwe] jwe parents: 1887 diff changeset	79 ## Use overlap-add method ...
11469 c776f063fefe Overhaul m-script files to use common variable name between code and documentation. Rik <octave@nomad.inbox5.com> parents: 7017 diff changeset	80 if (! (isscalar (n)))
11472 1740012184f9 Use uppercase for variable names in error() strings to match Info documentation. Only m-files done. Rik <octave@nomad.inbox5.com> parents: 11469 diff changeset	81 error ("fftfilt: N has to be a scalar");
787 c5d35bb139b6 [project @ 1994-10-11 00:34:13 by jwe] jwe parents: diff changeset	82 endif
13092 186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	83 n = 2 ^ nextpow2 (max ([n, l_b]));
11469 c776f063fefe Overhaul m-script files to use common variable name between code and documentation. Rik <octave@nomad.inbox5.com> parents: 7017 diff changeset	84 L = n - l_b + 1;
c776f063fefe Overhaul m-script files to use common variable name between code and documentation. Rik <octave@nomad.inbox5.com> parents: 7017 diff changeset	85 B = fft (b, n);
13092 186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	86 B = B(:, ones (c_x,1));
3890 9652abf2c297 [project @ 2002-04-04 23:24:39 by jwe] jwe parents: 3457 diff changeset	87 R = ceil (r_x / L);
9652abf2c297 [project @ 2002-04-04 23:24:39 by jwe] jwe parents: 3457 diff changeset	88 y = zeros (r_x, c_x);
1026 9fc405c8c06c [project @ 1995-01-11 21:17:01 by jwe] jwe parents: 904 diff changeset	89 for r = 1:R;
3890 9652abf2c297 [project @ 2002-04-04 23:24:39 by jwe] jwe parents: 3457 diff changeset	90 lo = (r - 1) * L + 1;
9652abf2c297 [project @ 2002-04-04 23:24:39 by jwe] jwe parents: 3457 diff changeset	91 hi = min (r * L, r_x);
11469 c776f063fefe Overhaul m-script files to use common variable name between code and documentation. Rik <octave@nomad.inbox5.com> parents: 7017 diff changeset	92 tmp = zeros (n, c_x);
3890 9652abf2c297 [project @ 2002-04-04 23:24:39 by jwe] jwe parents: 3457 diff changeset	93 tmp(1:(hi-lo+1),:) = x(lo:hi,:);
9652abf2c297 [project @ 2002-04-04 23:24:39 by jwe] jwe parents: 3457 diff changeset	94 tmp = ifft (fft (tmp) .* B);
11469 c776f063fefe Overhaul m-script files to use common variable name between code and documentation. Rik <octave@nomad.inbox5.com> parents: 7017 diff changeset	95 hi = min (lo+n-1, r_x);
3890 9652abf2c297 [project @ 2002-04-04 23:24:39 by jwe] jwe parents: 3457 diff changeset	96 y(lo:hi,:) = y(lo:hi,:) + tmp(1:(hi-lo+1),:);
2325 b5568c31ee2c [project @ 1996-07-15 22:20:21 by jwe] jwe parents: 2313 diff changeset	97 endfor
787 c5d35bb139b6 [project @ 1994-10-11 00:34:13 by jwe] jwe parents: diff changeset	98 endif
2325 b5568c31ee2c [project @ 1996-07-15 22:20:21 by jwe] jwe parents: 2313 diff changeset	99
13092 186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	100 y = y(1:r_x, :);
16429 586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	101
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	102 ## Final cleanups:
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	103
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	104 ## - If both b and x are real, y should be real.
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	105 ## - If b is real and x is imaginary, y should be imaginary.
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	106 ## - If b is imaginary and x is real, y should be imaginary.
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	107 ## - If both b and x are imaginary, y should be real.
16436 39847dcd2568 * fftfilt.m: simplify computation of xisreal and xisimag Jordi Gutiérrez Hermoso <jordigh@octave.org> parents: 16429 diff changeset	108 xisreal = all (imag (x) == 0);
39847dcd2568 * fftfilt.m: simplify computation of xisreal and xisimag Jordi Gutiérrez Hermoso <jordigh@octave.org> parents: 16429 diff changeset	109 xisimag = all (real (x) == 0);
39847dcd2568 * fftfilt.m: simplify computation of xisreal and xisimag Jordi Gutiérrez Hermoso <jordigh@octave.org> parents: 16429 diff changeset	110
16429 586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	111 if (all (imag (b) == 0))
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	112 y (:,xisreal) = real (y (:,xisreal));
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	113 y (:,xisimag) = complex (real (y (:,xisimag)) * 0, imag (y (:,xisimag)));
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	114 elseif (all (real (b) == 0))
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	115 y (:,xisreal) = complex (real (y (:,xisreal)) * 0, imag (y (:,xisreal)));
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	116 y (:,xisimag) = real (y (:,xisimag));
3890 9652abf2c297 [project @ 2002-04-04 23:24:39 by jwe] jwe parents: 3457 diff changeset	117 endif
787 c5d35bb139b6 [project @ 1994-10-11 00:34:13 by jwe] jwe parents: diff changeset	118
16429 586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	119 ## - If both x and b are integer in both real and imaginary
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	120 ## components, y should be integer.
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	121 if (! any (b - fix (b)))
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	122 idx = find (! any (x - fix (x)));
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	123 y (:, idx) = round (y (:, idx));
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	124 endif
1026 9fc405c8c06c [project @ 1995-01-11 21:17:01 by jwe] jwe parents: 904 diff changeset	125
16429 586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	126 ## Transpose after cleanup, otherwise rounding fails.
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	127 if (transpose)
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	128 y = y.';
787 c5d35bb139b6 [project @ 1994-10-11 00:34:13 by jwe] jwe parents: diff changeset	129 endif
c5d35bb139b6 [project @ 1994-10-11 00:34:13 by jwe] jwe parents: diff changeset	130
c5d35bb139b6 [project @ 1994-10-11 00:34:13 by jwe] jwe parents: diff changeset	131 endfunction
13092 186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	132
186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	133
186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	134 %!shared b, x, r
16429 586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	135
13092 186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	136 %!test
14363 f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	137 %! b = [1 1];
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	138 %! x = [1, zeros(1,9)];
16429 586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	139 %! assert (fftfilt (b, x ), [1 1 0 0 0 0 0 0 0 0] );
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	140 %! assert (fftfilt (b, x.'), [1 1 0 0 0 0 0 0 0 0].');
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	141 %! assert (fftfilt (b.',x ), [1 1 0 0 0 0 0 0 0 0] );
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	142 %! assert (fftfilt (b.',x.'), [1 1 0 0 0 0 0 0 0 0].');
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	143 %! assert (fftfilt (b, [x.' x.']), [1 1 0 0 0 0 0 0 0 0].'*[1 1]);
17146 b9ffacf34c2d fftfilt.m: Increase %!test tolerance to 2eps (bug #39647) Rik <rik@octave.org>* parents: 17091 diff changeset	144 %! assert (fftfilt (b, [x.'+2eps x.']) == [1 1 0 0 0 0 0 0 0 0].'[1 1], [false(10, 1) true(10, 1)]);
13092 186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	145
186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	146 %!test
14363 f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	147 %! r = sqrt (1/2) * (1+i);
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	148 %! b = b*r;
16429 586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	149 %! assert (fftfilt (b, x ), r*[1 1 0 0 0 0 0 0 0 0] , eps );
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	150 %! assert (fftfilt (b, rx), rr[1 1 0 0 0 0 0 0 0 0], 2eps);
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	151 %! assert (fftfilt (b, x.'), r*[1 1 0 0 0 0 0 0 0 0].', eps );
13092 186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	152
186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	153 %!test
16429 586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	154 %! b = [1 1];
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	155 %! x = zeros (10,3); x(1,1)=-1; x(1,2)=1;
14363 f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	156 %! y0 = zeros (10,3); y0(1:2,1)=-1; y0(1:2,2)=1;
16429 586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	157 %! y = fftfilt (b, x);
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	158 %! assert (y0, y);
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	159 %! y = fftfilt (b*i, x);
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	160 %! assert (y0*i, y);
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	161 %! y = fftfilt (b, x*i);
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	162 %! assert (y0*i, y);
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	163 %! y = fftfilt (bi, xi);
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	164 %! assert (-y0, y);
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	165 %! x = rand (10, 1);
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	166 %! y = fftfilt (b, [x x*i]);
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	167 %! assert (true, isreal (y(:,1)));
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	168 %! assert (false, any (real (y(:,2))));
13092 186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	169
186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	170 %!test
14363 f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	171 %! b = rand (10, 1);
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	172 %! x = rand (10, 1);
f3d52523cde1 Use Octave coding conventions in all m-file %!test blocks Rik <octave@nomad.inbox5.com> parents: 14138 diff changeset	173 %! y0 = filter (b, 1, x);
16429 586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	174 %! y = fftfilt (b, x);
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	175 %! assert (y0, y, 16*eps);
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	176 %! y0 = filter (bi, 1, xi);
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	177 %! y = fftfilt (bi, xi);
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	178 %! assert (y0, y, 16*eps);
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	179
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	180 %!test
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	181 %! b = rand (10, 1) + i*rand (10, 1);
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	182 %! x = rand (10, 1) + i*rand (10, 1);
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	183 %! y0 = filter (b, 1, x);
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	184 %! y = fftfilt (b, x);
586972e3ea7a Correct errors in the fftfilt rounding (bug #37297), add more robust tests. Daniel J Sebald <daniel.sebald@ieee.org> parents: 14363 diff changeset	185 %! assert (y0, y, 55*eps);
13092 186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	186
186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	187 %% Test input validation
186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	188 %!error fftfilt (1)
186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	189 %!error fftfilt (1, 2, 3, 4)
186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	190 %!error fftfilt (ones (2), 1)
186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	191 %!error fftfilt (2, ones (3,3,3))
186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	192 %!error fftfilt (2, 1, ones (2))
186c3b80ba54 codesprint: Tests for fftfilt() Rik <octave@nomad.inbox5.com> parents: 12546 diff changeset	193

Mercurial > hg > octave-lyh

annotate scripts/signal/fftfilt.m @ 17173:bb60b1bb47cf