Mercurial > octave-nkf
annotate scripts/audio/record.m @ 14138:72c96de7a403 stable
maint: update copyright notices for 2012
| author | John W. Eaton <jwe@octave.org> |
|---|---|
| date | Mon, 02 Jan 2012 14:25:41 -0500 |
| parents | d0b799dafede |
| children | 1c89599167a6 |
| 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 | 2 ## |
| 3 ## This file is part of Octave. | |
| 4 ## | |
| 5 ## Octave is free software; you can redistribute it and/or modify it | |
| 6 ## under the terms of the GNU General Public License as published by | |
| 7016 | 7 ## the Free Software Foundation; either version 3 of the License, or (at |
| 8 ## your option) any later version. | |
| 2313 | 9 ## |
| 10 ## Octave is distributed in the hope that it will be useful, but | |
| 11 ## WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 ## General Public License for more details. | |
| 14 ## | |
| 15 ## You should have received a copy of the GNU General Public License | |
| 7016 | 16 ## along with Octave; see the file COPYING. If not, see |
| 17 ## <http://www.gnu.org/licenses/>. | |
| 2303 | 18 |
| 3332 | 19 ## -*- texinfo -*- |
| 20 ## @deftypefn {Function File} {} record (@var{sec}, @var{sampling_rate}) | |
|
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Grammarcheck files for 3.4.1 release.
Rik <octave@nomad.inbox5.com>
parents:
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diff
changeset
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21 ## Record @var{sec} seconds of audio input into the vector @var{x}. The |
| 3332 | 22 ## default value for @var{sampling_rate} is 8000 samples per second, or |
| 23 ## 8kHz. The program waits until the user types @key{RET} and then | |
| 24 ## immediately starts to record. | |
| 5642 | 25 ## @seealso{lin2mu, mu2lin, loadaudio, saveaudio, playaudio, setaudio} |
| 3332 | 26 ## @end deftypefn |
| 27 | |
| 2312 | 28 ## Author: AW <Andreas.Weingessel@ci.tuwien.ac.at> |
| 29 ## Created: 19 September 1994 | |
| 30 ## Adapted-By: jwe | |
| 1636 | 31 |
| 2312 | 32 function X = record (sec, sampling_rate) |
| 1636 | 33 |
| 34 if (nargin == 1) | |
| 35 sampling_rate = 8000; | |
| 36 elseif (nargin != 2) | |
| 6046 | 37 print_usage (); |
| 1636 | 38 endif |
| 39 | |
| 2458 | 40 unwind_protect |
| 41 | |
| 42 file = tmpnam (); | |
| 1636 | 43 |
| 2458 | 44 input ("Please hit ENTER and speak afterwards!\n", 1); |
| 1636 | 45 |
| 4469 | 46 cmd = sprintf ("dd if=/dev/dsp of=\"%s\" bs=%d count=%d", |
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John W. Eaton <jwe@octave.org>
parents:
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diff
changeset
|
47 file, sampling_rate, sec); |
| 2458 | 48 |
| 49 system (cmd); | |
| 1636 | 50 |
| 3167 | 51 num = fopen (file, "rb"); |
| 1636 | 52 |
| 2458 | 53 [Y, c] = fread (num, sampling_rate * sec, "uchar"); |
| 54 | |
| 55 fclose (num); | |
| 1636 | 56 |
| 2458 | 57 unwind_protect_cleanup |
| 1636 | 58 |
| 2458 | 59 unlink (file); |
| 1636 | 60 |
| 2458 | 61 end_unwind_protect |
| 1636 | 62 |
| 63 X = Y - 127; | |
| 64 | |
| 65 endfunction |