home *** CD-ROM | disk | FTP | other *** search
- ## Copyright (C) 1996, 1997 John W. Eaton
- ##
- ## This file is part of Octave.
- ##
- ## Octave is free software; you can redistribute it and/or modify it
- ## under the terms of the GNU General Public License as published by
- ## the Free Software Foundation; either version 2, or (at your option)
- ## any later version.
- ##
- ## Octave is distributed in the hope that it will be useful, but
- ## WITHOUT ANY WARRANTY; without even the implied warranty of
- ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- ## General Public License for more details.
- ##
- ## You should have received a copy of the GNU General Public License
- ## along with Octave; see the file COPYING. If not, write to the Free
- ## Software Foundation, 59 Temple Place - Suite 330, Boston, MA
- ## 02111-1307, USA.
-
- ## -*- texinfo -*-
- ## @deftypefn {Function File} {} record (@var{sec}, @var{sampling_rate})
- ## Records @var{sec} seconds of audio input into the vector @var{x}. The
- ## default value for @var{sampling_rate} is 8000 samples per second, or
- ## 8kHz. The program waits until the user types @key{RET} and then
- ## immediately starts to record.
- ## @end deftypefn
-
- ## See also: lin2mu, mu2lin, loadaudio, saveaudio, playaudio, setaudio
-
- ## usage: X = record (sec [, sampling_rate])
- ##
- ## Records sec seconds of audio into the vector X.
- ## The default value for the sampling_rate is 8000, ie. 8kHz.
- ## The program waits for you to hit the ENTER key, then the recording
- ## starts immediatly.
-
- ## Author: AW <Andreas.Weingessel@ci.tuwien.ac.at>
- ## Created: 19 September 1994
- ## Adapted-By: jwe
-
- function X = record (sec, sampling_rate)
-
- if (nargin == 1)
- sampling_rate = 8000;
- elseif (nargin != 2)
- usage ("X = record (sec [, sampling_rate])");
- endif
-
- unwind_protect
-
- file = tmpnam ();
-
- input ("Please hit ENTER and speak afterwards!\n", 1);
-
- cmd = sprintf ("dd if=/dev/dsp of=%s bs=%d count=%d",
- file, sampling_rate, sec)
-
- system (cmd);
-
- num = fopen (file, "rb");
-
- [Y, c] = fread (num, sampling_rate * sec, "uchar");
-
- fclose (num);
-
- unwind_protect_cleanup
-
- unlink (file);
-
- end_unwind_protect
-
- X = Y - 127;
-
- endfunction
-