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Top Forums Shell Programming and Scripting Experimental awk audio converter for CygWin and AudioScope.sh Post 302923349 by Corona688 on Saturday 1st of November 2014 12:29:45 PM
Old 11-01-2014
I think you can simplify that awk code by telling it to use all whitespace as record separators. One statement instead of four. Then you just tell it to process the "odd" lines -- 1, 3, 5, ...

You can get rid of the BEGIN block by feeding variables into awk on the commandline. This also lets you script the value of the outputfile.

I started adding pipes and stuff then saw the BINMODE, and realized that's probably why you were forced to use temp files. Oh well.

Code:
awk --characters-as-bytes 'NR%2 { printf("%c", ($1+32768)/256)) > OUT }' RS="[ \r\n\t]+" BINMODE=3 OUT="/tmp/leftbinary" /tmp/signed16bit.txt

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Audio::File(3pm)					User Contributed Perl Documentation					  Audio::File(3pm)

NAME
Audio::File - Audio file abstraction library SYNOPSIS
use Audio::File; my $file = Audio::File->new( "foo.bar" ); print "The ". $file->type() ."-file ". $file->name ." is ". int $file->audio_properties->length() ." seconds long. "; print "It's interpreted by ". $file->tag->artist() ." and called ". $file->tag->title() ". "; DESCRIPTION
Audio::File abstracts a single audio file, independant of its format. Using this module you can access a files meta-info like title, album, etc. as well as the files audio-properties like its length and bitrate. Currently only the formats flac, ogg vorbis and mp3 are supported, but support for other formats may be easily added. METHODS
new $file = Audio::File->new( "foobar.flac" ); Constructor. It takes the filename of the your audio file as its only argument and returns an instance of Audio::File::${Type} if the corresponding file type is supported. The file type will be determined using the file extension. Currently flac, ogg and mp3 are supported but new formats may be added easily by creating a Audio::File::${Type} that inherits from Audio::File::Type, which is the base class for all file type classes. The methods and behaviour of the returned are documented in Audio::File::Type. TODO
o Add possibility to change file and its tags. o better (easier) interface? o user shouldn't be forced to use Audio::File if he only want's the files tag or audio properties. o Add possibility to access raw audio data (Audio::File::Data) That could be done via Audio::Data or equivalent. SEE ALSO
Audio::File::Type, Audio::File::Tag, Audio::File::AudioProperties AUTHOR
Florian Ragwitz <flora@cpan.org> COPYRIGHT AND LICENSE
Copyright (C) 2004 Florian Ragwitz This program 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 of the License, or (at your option) any later version. This program 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 Library General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. perl v5.10.0 2009-08-09 Audio::File(3pm)
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