Tau Analyzer is able to detect whether the audio CD was created from studio-based recordings, or from some decompressed lossy audio format, such as MP3. In other words, Tau Analyzer allows to determine the "authenticity" of an audio CD.
There is only a Windows version of Tau Analyzer available.
AuCDtect can be used in the Linux environment for the same purpose.
AuCDtect is a console program which uses the same algorithm as Tau Analyzer. In contrast to Tau Analyzer, which works with a CD drive directly, AuCDtect works with an audio CD image file stored in
.wav format. AuCDtect expects the name of the image file as a command line argument.
To run under Debian GNU/Linux 5.0 "lenny", use
AuCDtect version 0.8 (Linux x86). Tau Analyzer and AuCDtect for Windows are also available for download from
this page.
Unpack the archive into any suitable directory:
abunakov@debian:~/work$ tar zxf ~/downloads/aucdtect-0.8.2.tgz
When you run
auCDtect, it gives the following error message:
abunakov@debian:~/work$ ./aucdtect-0.8.2/auCDtect
./aucdtect-0.8.2/auCDtect: error while loading shared libraries: libstdc++-libc6.2-2.so.3: cannot open shared object file: No such file or directory
As follows from this error message, auCDtect could not find the libstdc++-libc6.2-2.so.3 shared library. This is an outdated version of The GNU Standard C++ Library. auCDtect is also incompatible with the version of the library which is shipped with Debian GNU/Linux 5.0 "lenny":
debian:/home/abunakov/work# ln -b -s libstdc++.so.6 /usr/lib/libstdc++-libc6.2-2.so.3
debian:/home/abunakov/work# ./aucdtect-0.8.2/auCDtect
auCDtect: CD records authenticity detector, version 0.8.2
Copyright (c) 2004 Oleg Berngardt. All rights reserved.
Copyright (c) 2004 Alexander Djourik. All rights reserved.
./aucdtect-0.8.2/auCDtect: symbol lookup error: ./aucdtect-0.8.2/auCDtect: undefined symbol: __builtin_new
debian:/home/abunakov/work# rm /usr/lib/libstdc++-libc6.2-2.so.3
Download the
libstdc++2.10-glibc2.2_2.95.4-27_i386.deb package for Intel x86 platform from one of the mirrors listed on
this page.
It is recommended to extract this package into the same directory where you unpacked auCDtect:
abunakov@debian:~/work$ dpkg -x ./libstdc++2.10-glibc2.2_2.95.4-27_i386.deb ./aucdtect-0.8.2
You must specify the path to
libstdc++-libc6.2-2.so.3 in
LD_LIBRARY_PATH environment variable. You can specify this path directly on the command line:
abunakov@debian:~/work$ LD_LIBRARY_PATH=./aucdtect-0.8.2/usr/lib ./aucdtect-0.8.2/auCDtect
auCDtect: CD records authenticity detector, version 0.8.2
Copyright (c) 2004 Oleg Berngardt. All rights reserved.
Copyright (c) 2004 Alexander Djourik. All rights reserved.
------------------------------------------------------------
Usage: auCDtect [commands/options] (track.wav|*.wav)
------------------------------------------------------------
commands:
------------------------------------------------------------
-- read data from stdin
-d summary conclusion for set of tracks
-v verbose mode
-h this help
------------------------------------------------------------
options:
------------------------------------------------------------
-mS detect mode S=[0..40], default 8
0 - slow and most accurate
40 - fast, but less accurate
------------------------------------------------------------
For more information please visit: http://www.true-audio.com
To avoid the hassle of having to define the
LD_LIBRARY_PATH on the command line each time you want to run
auCDtect, you can add a line like this:
export LD_LIBRARY_PATH=~/work/aucdtect-0.8.2/usr/lib
to your
~ /.bashrc file, and run
auCDtect with a shorter command:
abunakov@debian:~/work$ ./aucdtect-0.8.2/auCDtect
Unfortunately, I could not fix the error, which
auCDtect gives at the end of analysis:
------------------------------------------------------------
This track looks like CDDA with probability 100%
*** glibc detected *** ./aucdtect-0.8.2/auCDtect: double free or corruption (!prev): 0x08b78008 ***
======= Backtrace: =========
/lib/i686/cmov/libc.so.6[0xb7e5c624]
/lib/i686/cmov/libc.so.6(cfree+0x96)[0xb7e5e826]
./aucdtect-0.8.2/auCDtect[0x8049741]
/lib/i686/cmov/libc.so.6(__libc_start_main+0xe5)[0xb7e04455]
./aucdtect-0.8.2/auCDtect(__register_frame_info+0x45)[0x80489b1]
The reason is that
libstdc++-libc6.2-2.so.3, which
auCDtect uses, is incompatible with another standard library,
libc.so.6, which is installed in the system. You could try to download and use the appropriate version of
libc.so.6, but I decided not to do so, because for me, despite of errors,
auCDtect does its job, and I'm pretty happy with the results.
By the way,
libstdc++-libc6.2-2.so.3 is just a symlink to another file,
libstdc++-3-libc6.2-2-2.10.0.so. So, if you decide to move this library to some other location, make sure you move both files.
