lossyWAV 1.0.0 released., Added noise WAV bit reduction method. Options

[Nick.C]

lossyWAV 1.0.0b released:

CODE

lossyWAV 1.0.0b, Copyright © 2007,2008 Nick Currie. Copyleft.

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 3 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 General Public License for more details.

You should have received a copy of the GNU General Public License along with
this program.  If not, see <http://www.gnu.org/licenses/>.

Usage   : lossyWAV <input wav file> <options>

Example : lossyWAV musicfile.wav

Quality Options:

-q, --quality <n>   quality preset (10=highest quality, 0=lowest bitrate;
                    -q 5 is generally accepted to be transparent)
                    default=-q 5.

Standard Options:

-c, --check         check if WAV file has already been processed; default=off.
                    errorlevel=16 if already processed, 0 if not.
-C, --correction    write correction file for processed WAV file; default=off.
-f, --force         forcibly over-write output file if it exists; default=off.
-h, --help          display help.
-L, --longhelp      display extended help.
-M, --merge         merge existing lossy.wav and lwcdf.wav files.
-N, --noclips       set allowable number of clips / channel / codec block to 0;
                    default=3,3,3,3,2,1,0,0,0,0,0 (-q 0 to -q 10)
-o, --outdir <dir>  destination directory for the output file(s).
-v, --version       display the lossyWAV version number.

Special thanks:

David Robinson for the method itself and motivation to implement it.
Don Cross for the Complex-FFT algorithm used.
Horst Albrecht for valuable tuning input and feedback.

Explanation, history and lossless codec settings in the wiki article

[edit] 1.0.0b necessitated by unknown WAV chunk handling error and 24-bit --correction / --merge parameter error.

Link to GNU GPLv3+ source code for lossyWAV 1.0.0b [/edit]

N.B.: lossyWAV 1.1.0b released here.


This post has been edited by Nick.C: Mar 20 2009, 23:18

Attached File(s)

 lossyWAV_1.0.0b.zip ( 64.18K ) Number of downloads: 1895

 

[french dok]

This seem to be really interesting but one question comes to my mind ?
With this lossy treatment applied to future lossless files aren't we bluring everything ? I mean, we may not be able now to distinguish a real lossless file from an "almost lossless" file, which is finally a lossy one, don't you think?

[halb27]

This seem to be really interesting but one question comes to my mind ?
With this lossy treatment applied to future lossless files aren't we bluring everything ? I mean, we may not be able now to distinguish a real lossless file from an "almost lossless" file, which is finally a lossy one, don't you think?

We had this argument before. The answer is (for FLAC use as an example):
a) the lossyWAV preprocessed FLAC files get the extension .lossy.flac
b) the FLAC metadata carry the information about lossyWAV preprocessing
c) when looking at a lossless codec file you never know what the input was. It might originate from a 192 kbps DRM WMA file from a company offering DRM protected downloads but which you want to play on a non WMA DAP while not giving away quality. Three years after encoding theere's a chance you don't memorize where it came from.

This post has been edited by halb27: May 19 2008, 08:42