octave-nkf: scripts/audio/wavwrite.m annotate

annotate scripts/audio/wavwrite.m @ 20039:eba80000fa0d rc-4-0-0-2

maint: Bump version number for 4.0.0-rc2.

author	John W. Eaton <jwe@octave.org>
date	Fri, 20 Mar 2015 16:19:38 -0400
parents	9fc020886ae9
children	7503499a252b

rev	line source
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	1 ## Copyright (C) 2015 Mike Miller
19731 4197fc428c7d maint: Update copyright notices for 2015. John W. Eaton <jwe@octave.org> parents: 19312 diff changeset	2 ## Copyright (C) 2005-2015 Michael Zeising
5565 2eeed655e801 [project @ 2005-12-06 20:38:20 by jwe] jwe parents: diff changeset	3 ##
2eeed655e801 [project @ 2005-12-06 20:38:20 by jwe] jwe parents: diff changeset	4 ## This file is part of Octave.
2eeed655e801 [project @ 2005-12-06 20:38:20 by jwe] jwe parents: diff changeset	5 ##
2eeed655e801 [project @ 2005-12-06 20:38:20 by jwe] jwe parents: diff changeset	6 ## Octave is free software; you can redistribute it and/or modify it
2eeed655e801 [project @ 2005-12-06 20:38:20 by jwe] jwe parents: diff changeset	7 ## 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: 7003 diff changeset	8 ## the Free Software Foundation; either version 3 of the License, or (at
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 7003 diff changeset	9 ## your option) any later version.
5565 2eeed655e801 [project @ 2005-12-06 20:38:20 by jwe] jwe parents: diff changeset	10 ##
2eeed655e801 [project @ 2005-12-06 20:38:20 by jwe] jwe parents: diff changeset	11 ## Octave is distributed in the hope that it will be useful, but
2eeed655e801 [project @ 2005-12-06 20:38:20 by jwe] jwe parents: diff changeset	12 ## WITHOUT ANY WARRANTY; without even the implied warranty of
2eeed655e801 [project @ 2005-12-06 20:38:20 by jwe] jwe parents: diff changeset	13 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
2eeed655e801 [project @ 2005-12-06 20:38:20 by jwe] jwe parents: diff changeset	14 ## General Public License for more details.
2eeed655e801 [project @ 2005-12-06 20:38:20 by jwe] jwe parents: diff changeset	15 ##
2eeed655e801 [project @ 2005-12-06 20:38:20 by jwe] jwe parents: diff changeset	16 ## 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: 7003 diff changeset	17 ## along with Octave; see the file COPYING. If not, see
93c65f2a5668 [project @ 2007-10-12 06:40:56 by jwe] jwe parents: 7003 diff changeset	18 ## <http://www.gnu.org/licenses/>.
5565 2eeed655e801 [project @ 2005-12-06 20:38:20 by jwe] jwe parents: diff changeset	19
2eeed655e801 [project @ 2005-12-06 20:38:20 by jwe] jwe parents: diff changeset	20 ## -- texinfo --
10793 be55736a0783 Grammarcheck the documentation from m-files. Rik <octave@nomad.inbox5.com> parents: 10549 diff changeset	21 ## @deftypefn {Function File} {} wavwrite (@var{y}, @var{filename})
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	22 ## @deftypefnx {Function File} {} wavwrite (@var{y}, @var{fs}, @var{filename})
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	23 ## @deftypefnx {Function File} {} wavwrite (@var{y}, @var{fs}, @var{nbits}, @var{filename})
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	24 ## Write the audio signal @var{y} to the RIFF/WAVE sound file @var{filename}.
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	25 ## If @var{y} is a matrix, the columns represent multiple audio channels.
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	26 ##
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	27 ## The optional argument @var{fs} specifies the sample rate of the audio signal
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	28 ## in Hz. The optional argument @var{nbits} specifies the number of bits per
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	29 ## sample to write to @var{filename}. The default sample rate is 8000 Hz and
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	30 ## the default bit depth is 16 bits per sample.
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	31 ##
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	32 ## @seealso{audioread, audiowrite, wavread}
5565 2eeed655e801 [project @ 2005-12-06 20:38:20 by jwe] jwe parents: diff changeset	33 ## @end deftypefn
2eeed655e801 [project @ 2005-12-06 20:38:20 by jwe] jwe parents: diff changeset	34
6985 cf2f6090147a [project @ 2007-10-09 16:37:45 by jwe] jwe parents: 6304 diff changeset	35 function wavwrite (y, varargin)
5567 80e629357483 [project @ 2005-12-07 06:31:28 by jwe] jwe parents: 5565 diff changeset	36
80e629357483 [project @ 2005-12-07 06:31:28 by jwe] jwe parents: 5565 diff changeset	37 if (nargin < 2 \|\| nargin > 4)
6046 34f96dd5441b [project @ 2006-10-10 16:10:25 by jwe] jwe parents: 5642 diff changeset	38 print_usage ();
5565 2eeed655e801 [project @ 2005-12-06 20:38:20 by jwe] jwe parents: diff changeset	39 endif
5567 80e629357483 [project @ 2005-12-07 06:31:28 by jwe] jwe parents: 5565 diff changeset	40
6985 cf2f6090147a [project @ 2007-10-09 16:37:45 by jwe] jwe parents: 6304 diff changeset	41 ## Defaults.
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	42 fs = 8000;
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	43 nbits = 16;
6985 cf2f6090147a [project @ 2007-10-09 16:37:45 by jwe] jwe parents: 6304 diff changeset	44
12701 de3e90a420e3 Overhaul wavwrite, wavread and fix normalization problem (Bug #33420). Rik <octave@nomad.inbox5.com> parents: 11587 diff changeset	45 filename = varargin{end};
de3e90a420e3 Overhaul wavwrite, wavread and fix normalization problem (Bug #33420). Rik <octave@nomad.inbox5.com> parents: 11587 diff changeset	46 if (nargin > 2)
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	47 fs = varargin{1};
12701 de3e90a420e3 Overhaul wavwrite, wavread and fix normalization problem (Bug #33420). Rik <octave@nomad.inbox5.com> parents: 11587 diff changeset	48 if (nargin > 3)
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	49 nbits = varargin{2};
6985 cf2f6090147a [project @ 2007-10-09 16:37:45 by jwe] jwe parents: 6304 diff changeset	50 endif
cf2f6090147a [project @ 2007-10-09 16:37:45 by jwe] jwe parents: 6304 diff changeset	51 endif
cf2f6090147a [project @ 2007-10-09 16:37:45 by jwe] jwe parents: 6304 diff changeset	52
15529 9a7f73fc304f Fix wavwrite to accept a row vector input (bug #37540) Mike Miller <mtmiller@ieee.org> parents: 14138 diff changeset	53 ## calculate filesize
9a7f73fc304f Fix wavwrite to accept a row vector input (bug #37540) Mike Miller <mtmiller@ieee.org> parents: 14138 diff changeset	54 [n, channels] = size (y);
9a7f73fc304f Fix wavwrite to accept a row vector input (bug #37540) Mike Miller <mtmiller@ieee.org> parents: 14138 diff changeset	55
9a7f73fc304f Fix wavwrite to accept a row vector input (bug #37540) Mike Miller <mtmiller@ieee.org> parents: 14138 diff changeset	56 ## allow y to be a row vector
9a7f73fc304f Fix wavwrite to accept a row vector input (bug #37540) Mike Miller <mtmiller@ieee.org> parents: 14138 diff changeset	57 if (n == 1)
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	58 y = y(:);
15529 9a7f73fc304f Fix wavwrite to accept a row vector input (bug #37540) Mike Miller <mtmiller@ieee.org> parents: 14138 diff changeset	59 n = channels;
9a7f73fc304f Fix wavwrite to accept a row vector input (bug #37540) Mike Miller <mtmiller@ieee.org> parents: 14138 diff changeset	60 channels = 1;
9a7f73fc304f Fix wavwrite to accept a row vector input (bug #37540) Mike Miller <mtmiller@ieee.org> parents: 14138 diff changeset	61 endif
9a7f73fc304f Fix wavwrite to accept a row vector input (bug #37540) Mike Miller <mtmiller@ieee.org> parents: 14138 diff changeset	62
6304 78a3254741b2 [project @ 2007-02-14 21:22:59 by jwe] jwe parents: 6248 diff changeset	63 ## test arguments
15529 9a7f73fc304f Fix wavwrite to accept a row vector input (bug #37540) Mike Miller <mtmiller@ieee.org> parents: 14138 diff changeset	64 if (channels < 1)
6304 78a3254741b2 [project @ 2007-02-14 21:22:59 by jwe] jwe parents: 6248 diff changeset	65 error ("wavwrite: Y must have at least one column");
78a3254741b2 [project @ 2007-02-14 21:22:59 by jwe] jwe parents: 6248 diff changeset	66 endif
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	67
15529 9a7f73fc304f Fix wavwrite to accept a row vector input (bug #37540) Mike Miller <mtmiller@ieee.org> parents: 14138 diff changeset	68 if (channels > 0x7FFF)
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	69 error ("wavwrite: Y must have no more than 32767 columns");
5565 2eeed655e801 [project @ 2005-12-06 20:38:20 by jwe] jwe parents: diff changeset	70 endif
11587 c792872f8942 all script files: untabify and strip trailing whitespace John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	71
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	72 if (! (isscalar (fs) && (fs > 0)))
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	73 error ("wavwrite: sample rate FS must be a positive number");
5565 2eeed655e801 [project @ 2005-12-06 20:38:20 by jwe] jwe parents: diff changeset	74 endif
11587 c792872f8942 all script files: untabify and strip trailing whitespace John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	75
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	76 if (! isscalar (nbits) \|\| isempty (find (nbits == [8, 16, 24, 32])))
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	77 error ("wavwrite: bit depth NBITS must be 8, 16, 24, or 32");
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	78 endif
11587 c792872f8942 all script files: untabify and strip trailing whitespace John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	79
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	80 audiowrite (filename, y, fs, "BitsPerSample", nbits);
11587 c792872f8942 all script files: untabify and strip trailing whitespace John W. Eaton <jwe@octave.org> parents: 11523 diff changeset	81
5565 2eeed655e801 [project @ 2005-12-06 20:38:20 by jwe] jwe parents: diff changeset	82 endfunction
6304 78a3254741b2 [project @ 2007-02-14 21:22:59 by jwe] jwe parents: 6248 diff changeset	83
12701 de3e90a420e3 Overhaul wavwrite, wavread and fix normalization problem (Bug #33420). Rik <octave@nomad.inbox5.com> parents: 11587 diff changeset	84
13764 e9c23efe6fff wavwrite.m: Use temporary filename in %!tests rather than hardcoded one. Rik <octave@nomad.inbox5.com> parents: 12701 diff changeset	85 %!shared fname
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	86 %! fname = [tempname() ".wav"];
13764 e9c23efe6fff wavwrite.m: Use temporary filename in %!tests rather than hardcoded one. Rik <octave@nomad.inbox5.com> parents: 12701 diff changeset	87
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	88 %!testif HAVE_SNDFILE
17193 af2051e363ea Fix return arguments for wavread (...,"size"), bug #39639. Rik <rik@octave.org> parents: 16974 diff changeset	89 %! A = [-1:0.1:1; -1:0.1:1]';
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	90 %! unwind_protect
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	91 %! wavwrite (A, fname);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	92 %! [B, samples_per_sec, bits_per_sample] = wavread (fname);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	93 %! assert (B, A, 2^-14);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	94 %! assert (samples_per_sec, 8000);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	95 %! assert (bits_per_sample, 16);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	96 %! unwind_protect_cleanup
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	97 %! unlink (fname);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	98 %! end_unwind_protect
16974 221e71d2aef0 Unlink tmp files in %!tests before doing asserts so that file is always removed. Rik <rik@octave.org> parents: 15529 diff changeset	99
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	100 %!testif HAVE_SNDFILE
17193 af2051e363ea Fix return arguments for wavread (...,"size"), bug #39639. Rik <rik@octave.org> parents: 16974 diff changeset	101 %! A = [-1:0.1:1; -1:0.1:1]';
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	102 %! unwind_protect
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	103 %! wavwrite (A, 4000, fname);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	104 %! [B, samples_per_sec, bits_per_sample] = wavread (fname);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	105 %! assert (B, A, 2^-14);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	106 %! assert (samples_per_sec, 4000);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	107 %! assert (bits_per_sample, 16);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	108 %! unwind_protect_cleanup
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	109 %! unlink (fname);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	110 %! end_unwind_protect
16974 221e71d2aef0 Unlink tmp files in %!tests before doing asserts so that file is always removed. Rik <rik@octave.org> parents: 15529 diff changeset	111
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	112 %!testif HAVE_SNDFILE
17193 af2051e363ea Fix return arguments for wavread (...,"size"), bug #39639. Rik <rik@octave.org> parents: 16974 diff changeset	113 %! A = [-1:0.1:1; -1:0.1:1]';
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	114 %! unwind_protect
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	115 %! wavwrite (A, 4000, 8, fname);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	116 %! [B, samples_per_sec, bits_per_sample] = wavread (fname);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	117 %! assert (B, A, 2^-6);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	118 %! assert (samples_per_sec, 4000);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	119 %! assert (bits_per_sample, 8);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	120 %! unwind_protect_cleanup
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	121 %! unlink (fname);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	122 %! end_unwind_protect
16974 221e71d2aef0 Unlink tmp files in %!tests before doing asserts so that file is always removed. Rik <rik@octave.org> parents: 15529 diff changeset	123
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	124 %!testif HAVE_SNDFILE
15529 9a7f73fc304f Fix wavwrite to accept a row vector input (bug #37540) Mike Miller <mtmiller@ieee.org> parents: 14138 diff changeset	125 %! A = [-2:2]';
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	126 %! unwind_protect
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	127 %! wavwrite (A, fname);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	128 %! B = wavread (fname);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	129 %! B *= 32768;
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	130 %! assert (B, [-32767 -32767 0 32767 32767]');
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	131 %! unwind_protect_cleanup
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	132 %! unlink (fname);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	133 %! end_unwind_protect
16974 221e71d2aef0 Unlink tmp files in %!tests before doing asserts so that file is always removed. Rik <rik@octave.org> parents: 15529 diff changeset	134
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	135 %!testif HAVE_SNDFILE
15529 9a7f73fc304f Fix wavwrite to accept a row vector input (bug #37540) Mike Miller <mtmiller@ieee.org> parents: 14138 diff changeset	136 %! A = [-1:0.1:1];
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	137 %! unwind_protect
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	138 %! wavwrite (A, fname);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	139 %! [B, samples_per_sec, bits_per_sample] = wavread (fname);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	140 %! assert (B, A', 2^-14);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	141 %! assert (samples_per_sec, 8000);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	142 %! assert (bits_per_sample, 16);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	143 %! unwind_protect_cleanup
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	144 %! unlink (fname);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	145 %! end_unwind_protect
12701 de3e90a420e3 Overhaul wavwrite, wavread and fix normalization problem (Bug #33420). Rik <octave@nomad.inbox5.com> parents: 11587 diff changeset	146
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	147 %!testif HAVE_SNDFILE
17193 af2051e363ea Fix return arguments for wavread (...,"size"), bug #39639. Rik <rik@octave.org> parents: 16974 diff changeset	148 %! A = [-1:0.1:1; -1:0.1:1]';
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	149 %! unwind_protect
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	150 %! wavwrite (A, fname);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	151 %! B = wavread (fname, 15);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	152 %! assert (B, A(1:15,:), 2^-14);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	153 %! wavwrite (A, fname);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	154 %! B = wavread (fname, [10, 20]);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	155 %! assert (B, A(10:20,:), 2^-14);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	156 %! unwind_protect_cleanup
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	157 %! unlink (fname);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	158 %! end_unwind_protect
17193 af2051e363ea Fix return arguments for wavread (...,"size"), bug #39639. Rik <rik@octave.org> parents: 16974 diff changeset	159
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	160 %!testif HAVE_SNDFILE
17193 af2051e363ea Fix return arguments for wavread (...,"size"), bug #39639. Rik <rik@octave.org> parents: 16974 diff changeset	161 %! A = [-1:0.1:1; -1:0.1:1]';
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	162 %! unwind_protect
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	163 %! wavwrite (A, fname);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	164 %! [nsamp, nchan] = wavread (fname, "size");
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	165 %! assert (nsamp, 21);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	166 %! assert (nchan, 2);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	167 %! unwind_protect_cleanup
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	168 %! unlink (fname);
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	169 %! end_unwind_protect
17193 af2051e363ea Fix return arguments for wavread (...,"size"), bug #39639. Rik <rik@octave.org> parents: 16974 diff changeset	170
19867 9fc020886ae9 maint: Clean up m-files to follow Octave coding conventions. Rik <rik@octave.org> parents: 19848 diff changeset	171 ## Test input validation
19848 71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	172 %!error wavwrite ()
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	173 %!error wavwrite (1)
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	174 %!error wavwrite (1,2,3,4,5)
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	175 %!error wavwrite ([], "foo.wav");
71770cf07c30 wavread, wavwrite: Overhaul functions. Mike Miller <mtmiller@ieee.org> parents: 19731 diff changeset	176

Mercurial > octave-nkf

annotate scripts/audio/wavwrite.m @ 20039:eba80000fa0d rc-4-0-0-2