aucdtect, Test audio cd authenticity Options

[Bern]

auCDtect - is a program for determining the authenticity of musical CD records, using the character of the audio information it contains, and predict its possible source is it an original studio record or a
reconstruction from a lossy encoded data (for example, MP3).

Current version: 0.6

Accuracy: >95% (for detecting mp3s)

This post has been edited by tigre: Apr 4 2004, 09:59

[atherean]

The following has been moved by moderation from Bern's post to save space on HA portal. (See TOS # 14)
___________________________________________________________________

Features:
- Console-based
- Supports wildcards
- Detects wavs converted from MP3-s with different quilities (starting from lame -k, till lame -alt-preset standard)
- pretesting shows detetction of some files converted from MP3-s with --alt-preset insane --alt-preset extreme and --r3mix .
- Pretesting on some reconversions from OGGs too, shows approximately 80% accuracy for -q 8 and -q 9

License: Freeware

Location:
ftp://tta.iszf.irk.ru/aucdtect-lastest.zip (Windows version)
ftp://tta.iszf.irk.ru/aucdtect-lastest.tgz (Linux (i386) version)

Technical details:
http://tta.iszf.irk.ru/index.php?menu=aucd

We hope, it will be useful program...
___________________________________________________________________
Original post by atherean:


Thanks, been looking for something like this for a while, some of the russian cds i own sound suspiciously bad

[/\/ephaestous]

It actually works pretty well, it even detected some --xtreme mpcs
However, whenever dither is selected in the output options it never detects ANY wav as coming from a lossy source.

[Rasi]

just tried...

ripped from original cd to wav... aucdtect couldnt complain...

encoded to musepack -xtreme +xlevel

set playback options in foobar set to dither strong ATH Noise

converted to Wav PCM Fixed Point


aucdtect complains. file being from lossy source

[/\/ephaestous]

Small test:

CODE

aucdtect -m0 *.wav
auCDtect: CD records authenticity detector, version 0.6
Copyright (c) 2004 Oleg Berngardt. All rights reserved.
Copyright (c) 2004 Alexander Djourik. All rights reserved.
------------------------------------------------------------
Processing file:        [MP3 - Dithered.wav]
Data analysis:          [100%]
------------------------------------------------------------
This track looks like a high-quality CD record

Processing file:        [MP3-No Dither.wav]
Data analysis:          [100%]
------------------------------------------------------------
This track looks like an MP3 decoded record

Processing file:        [MPC - Dithered.wav]
Data analysis:          [100%]
------------------------------------------------------------
Could not determine the source of this record

Processing file:        [MPC - No Dither.wav]
Data analysis:          [100%]
------------------------------------------------------------
This track looks like an MP3 decoded record

Processing file:        [Original.wav]
Data analysis:          [100%]
------------------------------------------------------------
This track looks like a high-quality CD record

Processing file:        [Vorbis - Dithered.wav]
Data analysis:          [100%]
------------------------------------------------------------
This track looks like a high-quality CD record

Processing file:        [Vorbis - No Dither.wav]
Data analysis:          [100%]
------------------------------------------------------------
This track looks like an MP3 decoded record

The MP3 was --alt-preset standard. the mpc was --xtreme -xlevel and the vorbis version was GTune 3 beta 2 @ q8. All were encoded from Original.wav and decoded with foobar2000 with and without Strong ATH noise shaping.

The problem could be that dithering adds noise in the high side of the spectrum, so the analisis of the lowpass is borked (specially since the lowpass in APS is 19Khz anyway).

This post has been edited by /\/ephaestous: Apr 4 2004, 09:35

[Johncan]

I must be missing something obvious, but I can't get the program to work. I downloaded the zip file (for Windows) and put the files in their own directory. When I double-click on the auCDtect.exe nothing happens. Someone please tell me what I have missed.

I am running WinXP Pro.

John

[krmathis]

@Johncan.
It does not have a GUI, so you need to run it from a Command Prompt!

Solaris

[Johncan]

Solaris,

Thanks! I got it going now.

John

[M]

Nice work. Running the program directly from the command line it functions as described; however, for some reason it does not want to function with Speek's Batchenc frontend. Using the line auCDtect <infile> on "test.wav", it gives the following message:

CODE

auCDtect: CD records authenticity detector, version 0.6
Copyright (c) 2004 Oleg Berngardt. All rights reserved.
Copyright (c) 2004 Alexander Djourik. All rights reserved.
------------------------------------------------------------
error: can not open file test.wav
-------------------------------------------------------------------------------

- M.

[zver]

Well,this looks like the same company-developers which make tta lossless encoder,and i remember their post here when they were saying that their compressor will compress better then all present lossless codecs-at least they were claiming that????Somebody knows more about that like where to find a plugin for foobar couse i saw the binaries on their site and i wouldnt mind to test it to see it for muself
And one for developers-Any chance of making a gui for this piece of software??
Thanks!!

This post has been edited by zver: Apr 5 2004, 03:21

[ald]

Well,this looks like the same company-developers which make tta lossless encoder, and i remember their post here when they were saying that their compressor will compress better then all present lossless codecs-at least they were claiming that????

Who said? If you speek about a comparisons results.. Yes sometimes it compress better, but never always. Please, be correctly.

TTA compressor comparisons results

Somebody knows more about that like where to find a plugin for foobar..

Foobar, Apollo and Winamp plugins you can found in a TTA distribution package, also these plugins are available separately

TTA compressor download page

And one for developers-Any chance of making a gui for this piece of software??

Yes, all of GUIs are planed, but only 2 developers work with TTA project and we are very busy at now.

P/S: New TTA format coming soon, which is made especially for hardware support. It's will be released as a TTA1 format. Its compression characteristics corresponds to TTA 2.0 encoder results in fast mode (-e1). Also we start a work with new TTA-based format (not hardware oriented), to reach a maximum compression results.

-- Alexander

[WaldoMonster]

Alexander can we upload files that gave the wrong information to improve auCDtect?

auCDtect.exe only works when the wave files are in the same directory.
Otherwise I get the following error:

D:\Console\Codec>auCDtect.exe d:\temp\test.wav
auCDtect: CD records authenticity detector, version 0.6
Copyright © 2004 Oleg Berngardt. All rights reserved.
Copyright © 2004 Alexander Djourik. All rights reserved.
------------------------------------------------------------
error: can not open file test.wav

D:\Console\Codec>

[ald]

Alexander can we upload files that gave the wrong information to improve auCDtect?

Yes. Its possible. I can open FTP, but it will be better if you would post a codec name, its settings and program log with -v parameter.

auCDtect.exe only works when the wave files are in the same directory.

Thank you. It will be corrected quickly and also I'll inform you about it in this forum.

-- Alexander

This post has been edited by ald: Apr 5 2004, 11:52

[WaldoMonster]

Works pretty well with the current LAME and Musepack.
But has some problems with older LAME versions (post it next time).



This post has been edited by WaldoMonster: Apr 5 2004, 14:38

[WaldoMonster]

Not good detected or "Could not determine" from 26 mp3 files:
All files decoded with LAME 3.90.3

This track looks like a high-quality CD record
LAME 3.86 - CBR256 (Bomfunk MC's – Freestyler)
LAME 3.88 - ABR256 (Darude - Sandstorm)
LAME 3.87 - CBR256 (Paolo Conte - Via Con Me)
LAME 3.87 - CBR256 (Stardust - The Music Sounds Better With You)

Could not determine the source of this record
LAME 3.87 - CBR256 (Brandy & Monica - The Boy Is Mine)
LAME 3.87 - CBR256 (Chef - Chocolat salty balls)
LAME 3.87 - CBR256 (Faithless - Don't Leave)
LAME 3.87 - CBR256 (Jennifer Paige – Crush)
LAME 3.87 - CBR256 (Moloko - The Time Is Now)
LAME 3.87 - CBR256 (Nomansland - 7 Seconds)
LAME 3.87 - CBR256 (Postmen – Crisis)
LAME 3.86 - CBR256 (Propellerheads - History Repeating (Shirley Bassy))
LAME 3.87 - CBR256 (Run DMC - It's Like That)
LAME 3.87 - CBR256 (The Artful Dodger – Rewind)
LAME 3.88 - ABR256 (Zita swoon - Hot hotter hottest)

[ald]

Thank you for your tests! Going to test auCDtect with all of available versions of LAME encoder.

Not good detected or "Could not determine"

"Could not determine" - We going to reduce the count of such messages, at now its not a error.

This track looks like a high-quality CD record

This is a program error if its not true. For about of 200 of the tested albums we have approx. 5% of such files. At now the algorithm has only 2 of known unstable points for standard LAME 3.92 files and both of them are already fixed, but not released because the problem with dithered files is not resolved. Please wait for a version 0.7 for this tests. I think we can to release it in a next week.

P/S: This version (0.6) may to show a wrong result for a very small count of files, but we think it can be usefull. Thus, all of the album tracks must be tested to determine the CD source.

-- Alexander

[WaldoMonster]

I will test the program some more when version 0.7 arrives.
It would be nice if the program can return different errorlevels for the source prediction.

[zver]

Who said? If you speek about a comparisons results.. Yes sometimes it compress better, but never always. Please, be correctly.

I thought i saw a post before here,really apologize if it wasnt the case
Anyway just downloaded a package so will try to see how it goes.

This post has been edited by zver: Apr 5 2004, 21:16

[mpcfiend]

This track looks like a high-quality CD record
LAME 3.86 - CBR256 (Bomfunk MC's - Freestyler)
LAME 3.88 - ABR256 (Darude - Sandstorm)
LAME 3.87 - CBR256 (Paolo Conte - Via Con Me)
LAME 3.87 - CBR256 (Stardust - The Music Sounds Better With You)

Yes, well, this says more about the state of today's music than the state of LAME (God forbid ) or the state of the detection algorithms. How much you wanna bet some recordings come off the CD already having been compressed with a lossy codec?

Edit: Sorry, let alone have their dynamic range completely fuctwith as well.

This post has been edited by mpcfiend: Apr 6 2004, 01:59

[ald]

Sorry for offtopic, about TTA:

Anyway just downloaded a package so will try to see how it goes.

TTA project has revived not for purposes of reaching a best results in compression.
I think it can be a goal of the next of our projects. At now we done our work with a simple and effective lossless audio format for hardware implementation. This format will be released at soon as TTA1 (based on encoder v3.0). New encoder compression characteristics corresponds to TTA v2.0 encoder results in fast mode (-e1), but its can be compiled and executed on a several different platforms, has a minimal system requirements (em85xx compatible), 30% faster, provides immediately seeking and can to decode partially corrupted files. Thus, you can to test TTA v2.0, but I recommend you to wait for the format release.

-- Alexander

[ald]

D:\Console\Codec>auCDtect.exe d:\temp\test.wav
auCDtect: CD records authenticity detector, version 0.6
Copyright © 2004 Oleg Berngardt. All rights reserved.
Copyright © 2004 Alexander Djourik. All rights reserved.
------------------------------------------------------------
error: can not open file test.wav

D:\Console\Codec>

FIXED. Sorry for delay.

-- Alexander

[xmixahlx]

hey ald,

bumping this thread to flag you down for this:
http://www.hydrogenaudio.org/show.php/showtopic/20462


later

[WaldoMonster]

D:\Console\Codec>auCDtect.exe d:\temp\test.wav
auCDtect: CD records authenticity detector, version 0.6
Copyright © 2004 Oleg Berngardt. All rights reserved.
Copyright © 2004 Alexander Djourik. All rights reserved.
------------------------------------------------------------
error: can not open file test.wav

D:\Console\Codec>

FIXED. Sorry for delay.

-- Alexander

Thanks very much for the update.
Works perfect also tested with long file names and spaces in the path.

Why do you not increase the version number with this update?

[ald]

Thanks very much for the update.
Why do you not increase the version number with this update?

I think its not required. Its not an update, just a small fixing ;-))

[M]

D:\Console\Codec>auCDtect.exe d:\temp\test.wav
auCDtect: CD records authenticity detector, version 0.6
Copyright © 2004 Oleg Berngardt. All rights reserved.
Copyright © 2004 Alexander Djourik. All rights reserved.
------------------------------------------------------------
error: can not open file test.wav

D:\Console\Codec>

FIXED. Sorry for delay.

-- Alexander

... and this fix also makes it usable with Speek's Batchenc frontend. Parameters are simply auCDtect <infile> for default performance, or auCDtect -m0 <infile> for "slow and most accurate."

- M.