Mercurial > hg > octave-lyh

annotate scripts/audio/record.m @ 17219:87ba70043bfc

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Don't use ifelse in plot fcns to avoid unnecessary fcn evaluations. * scripts/plot/area.m, scripts/plot/axis.m, scripts/plot/caxis.m, scripts/plot/comet.m, scripts/plot/comet3.m, scripts/plot/compass.m, scripts/plot/contour.m, scripts/plot/contour3.m, scripts/plot/contourf.m, scripts/plot/cylinder.m, scripts/plot/ellipsoid.m, scripts/plot/errorbar.m, scripts/plot/feather.m, scripts/plot/fill.m, scripts/plot/loglog.m, scripts/plot/loglogerr.m, scripts/plot/mesh.m, scripts/plot/meshc.m, scripts/plot/meshz.m, scripts/plot/pcolor.m, scripts/plot/pie.m, scripts/plot/pie3.m, scripts/plot/plot.m, scripts/plot/plot3.m, scripts/plot/polar.m, scripts/plot/private/__bar__.m, scripts/plot/private/__ezplot__.m, scripts/plot/private/__stem__.m, scripts/plot/quiver.m, scripts/plot/quiver3.m, scripts/plot/rectangle.m, scripts/plot/ribbon.m, scripts/plot/rose.m, scripts/plot/scatter.m, scripts/plot/scatter3.m, scripts/plot/semilogx.m, scripts/plot/semilogxerr.m, scripts/plot/semilogy.m, scripts/plot/semilogyerr.m, scripts/plot/slice.m, scripts/plot/sphere.m, scripts/plot/stairs.m, scripts/plot/surf.m, scripts/plot/surfc.m, scripts/plot/surfl.m, scripts/plot/surfnorm.m, scripts/time/datetick.m: Don't use ifelse in plot fcns to avoid unnecessary fcn evaluations.
author Rik <rik@octave.org>
date Fri, 09 Aug 2013 19:26:55 -0700
parents 72c96de7a403
children 1c89599167a6
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
rev   line source
14138
72c96de7a403 maint: update copyright notices for 2012
John W. Eaton <jwe@octave.org>
parents: 12575
diff changeset
1 ## Copyright (C) 1995-2012 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/>.
2303
5cffc4b8de57 [project @ 1996-06-24 09:15:24 by jwe]
jwe
parents: 1636
diff changeset
18
3332
7c03933635c6 [project @ 1999-11-02 06:57:12 by jwe]
jwe
parents: 3167
diff changeset
19 ## -*- texinfo -*-
7c03933635c6 [project @ 1999-11-02 06:57:12 by jwe]
jwe
parents: 3167
diff changeset
20 ## @deftypefn {Function File} {} record (@var{sec}, @var{sampling_rate})
12575
d0b799dafede Grammarcheck files for 3.4.1 release.
Rik <octave@nomad.inbox5.com>
parents: 11589
diff changeset
21 ## Record @var{sec} seconds of audio input into the vector @var{x}. The
3332
7c03933635c6 [project @ 1999-11-02 06:57:12 by jwe]
jwe
parents: 3167
diff changeset
22 ## default value for @var{sampling_rate} is 8000 samples per second, or
7c03933635c6 [project @ 1999-11-02 06:57:12 by jwe]
jwe
parents: 3167
diff changeset
23 ## 8kHz. The program waits until the user types @key{RET} and then
7c03933635c6 [project @ 1999-11-02 06:57:12 by jwe]
jwe
parents: 3167
diff changeset
24 ## immediately starts to record.
5642
2618a0750ae6 [project @ 2006-03-06 21:26:48 by jwe]
jwe
parents: 5307
diff changeset
25 ## @seealso{lin2mu, mu2lin, loadaudio, saveaudio, playaudio, setaudio}
3332
7c03933635c6 [project @ 1999-11-02 06:57:12 by jwe]
jwe
parents: 3167
diff changeset
26 ## @end deftypefn
7c03933635c6 [project @ 1999-11-02 06:57:12 by jwe]
jwe
parents: 3167
diff changeset
27
2312
204cc7db6f4a [project @ 1996-07-11 21:20:36 by jwe]
jwe
parents: 2311
diff changeset
28 ## Author: AW <Andreas.Weingessel@ci.tuwien.ac.at>
204cc7db6f4a [project @ 1996-07-11 21:20:36 by jwe]
jwe
parents: 2311
diff changeset
29 ## Created: 19 September 1994
204cc7db6f4a [project @ 1996-07-11 21:20:36 by jwe]
jwe
parents: 2311
diff changeset
30 ## Adapted-By: jwe
1636
21fe2afb3692 [project @ 1995-11-16 19:16:11 by jwe]
jwe
parents:
diff changeset
31
2312
204cc7db6f4a [project @ 1996-07-11 21:20:36 by jwe]
jwe
parents: 2311
diff changeset
32 function X = record (sec, sampling_rate)
1636
21fe2afb3692 [project @ 1995-11-16 19:16:11 by jwe]
jwe
parents:
diff changeset
33
21fe2afb3692 [project @ 1995-11-16 19:16:11 by jwe]
jwe
parents:
diff changeset
34 if (nargin == 1)
21fe2afb3692 [project @ 1995-11-16 19:16:11 by jwe]
jwe
parents:
diff changeset
35 sampling_rate = 8000;
21fe2afb3692 [project @ 1995-11-16 19:16:11 by jwe]
jwe
parents:
diff changeset
36 elseif (nargin != 2)
6046
34f96dd5441b [project @ 2006-10-10 16:10:25 by jwe]
jwe
parents: 5642
diff changeset
37 print_usage ();
1636
21fe2afb3692 [project @ 1995-11-16 19:16:11 by jwe]
jwe
parents:
diff changeset
38 endif
21fe2afb3692 [project @ 1995-11-16 19:16:11 by jwe]
jwe
parents:
diff changeset
39
2458
d07a5d0b57e2 [project @ 1996-11-03 03:25:18 by jwe]
jwe
parents: 2313
diff changeset
40 unwind_protect
d07a5d0b57e2 [project @ 1996-11-03 03:25:18 by jwe]
jwe
parents: 2313
diff changeset
41
d07a5d0b57e2 [project @ 1996-11-03 03:25:18 by jwe]
jwe
parents: 2313
diff changeset
42 file = tmpnam ();
1636
21fe2afb3692 [project @ 1995-11-16 19:16:11 by jwe]
jwe
parents:
diff changeset
43
2458
d07a5d0b57e2 [project @ 1996-11-03 03:25:18 by jwe]
jwe
parents: 2313
diff changeset
44 input ("Please hit ENTER and speak afterwards!\n", 1);
1636
21fe2afb3692 [project @ 1995-11-16 19:16:11 by jwe]
jwe
parents:
diff changeset
45
4469
53ee020af847 [project @ 2003-07-26 03:45:10 by jwe]
jwe
parents: 3458
diff changeset
46 cmd = sprintf ("dd if=/dev/dsp of=\"%s\" bs=%d count=%d",
11589
b0084095098e missing semicolons in script files
John W. Eaton <jwe@octave.org>
parents: 11523
diff changeset
47 file, sampling_rate, sec);
2458
d07a5d0b57e2 [project @ 1996-11-03 03:25:18 by jwe]
jwe
parents: 2313
diff changeset
48
d07a5d0b57e2 [project @ 1996-11-03 03:25:18 by jwe]
jwe
parents: 2313
diff changeset
49 system (cmd);
1636
21fe2afb3692 [project @ 1995-11-16 19:16:11 by jwe]
jwe
parents:
diff changeset
50
3167
d609b993be3b [project @ 1998-04-17 04:41:59 by jwe]
jwe
parents: 2847
diff changeset
51 num = fopen (file, "rb");
1636
21fe2afb3692 [project @ 1995-11-16 19:16:11 by jwe]
jwe
parents:
diff changeset
52
2458
d07a5d0b57e2 [project @ 1996-11-03 03:25:18 by jwe]
jwe
parents: 2313
diff changeset
53 [Y, c] = fread (num, sampling_rate * sec, "uchar");
d07a5d0b57e2 [project @ 1996-11-03 03:25:18 by jwe]
jwe
parents: 2313
diff changeset
54
d07a5d0b57e2 [project @ 1996-11-03 03:25:18 by jwe]
jwe
parents: 2313
diff changeset
55 fclose (num);
1636
21fe2afb3692 [project @ 1995-11-16 19:16:11 by jwe]
jwe
parents:
diff changeset
56
2458
d07a5d0b57e2 [project @ 1996-11-03 03:25:18 by jwe]
jwe
parents: 2313
diff changeset
57 unwind_protect_cleanup
1636
21fe2afb3692 [project @ 1995-11-16 19:16:11 by jwe]
jwe
parents:
diff changeset
58
2458
d07a5d0b57e2 [project @ 1996-11-03 03:25:18 by jwe]
jwe
parents: 2313
diff changeset
59 unlink (file);
1636
21fe2afb3692 [project @ 1995-11-16 19:16:11 by jwe]
jwe
parents:
diff changeset
60
2458
d07a5d0b57e2 [project @ 1996-11-03 03:25:18 by jwe]
jwe
parents: 2313
diff changeset
61 end_unwind_protect
1636
21fe2afb3692 [project @ 1995-11-16 19:16:11 by jwe]
jwe
parents:
diff changeset
62
21fe2afb3692 [project @ 1995-11-16 19:16:11 by jwe]
jwe
parents:
diff changeset
63 X = Y - 127;
21fe2afb3692 [project @ 1995-11-16 19:16:11 by jwe]
jwe
parents:
diff changeset
64
21fe2afb3692 [project @ 1995-11-16 19:16:11 by jwe]
jwe
parents:
diff changeset
65 endfunction