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AAC 48kbps listening test - open

The AAC @ 48kbps listening test is now open.

Contenders are:
* Nero Digital HE-AAC
* Nero Digital HE-AACv2
* 3GPP HE-AAC
* Coding Technologies HE-AAC
* Coding Technologies HE-AACv2

Anchors:
* iTunes AAC-LC
* L.A.M.E. MP3

Test homepage:
http://www.mp3-tech.org/content/?48kbps%20...20public%20test

Current number of participants for the different samples:
1: 16
2: 14
3: 14
4: 14
5: 13
6: 9
7: 11
8: 8
9: 12
10: 11
11: 10
12: 13
13: 12
14: 11
15: 10
16: 11
17: 12
18: 11

MORE RESULTS ARE NEEDED

AAC 48kbps listening test - open

Reply #1
itunes 6.0.3 just came out, but it looks like Quicktime didn't change so i doubt it matters.

AAC 48kbps listening test - open

Reply #2
Let's do our part -- I'm doing at least part of this one!

AAC 48kbps listening test - open

Reply #3
I noticed 2 typos on the test webpage:
Quote
In the losy audio coding field

Quote
Miscelaneous
Life is Real...
(But not in audio :) )

AAC 48kbps listening test - open

Reply #4
Small note Gabriel: Ivan has posted a small update for ndaudio.dll in the pre-discussion thread. To avoid confusions, could be great to add a link for this bugfix in your webpage or remade a nero package...it's just a suggestion.

AAC 48kbps listening test - open

Reply #5
Yes, it's just a matter of time.

AAC 48kbps listening test - open

Reply #6
please provide links to all encoder binaries
And don't forget - there are many versions of WinAmp beta - specify exact build number please

AAC 48kbps listening test - open

Reply #7
I can't ABX all high anchor samples but surely hear SBR,PS and low anchor artifacts.Will be ok if some of  my results won't have a high anchor result?

AAC 48kbps listening test - open

Reply #8
Yes

AAC 48kbps listening test - open

Reply #9
How is preferible to send the results?  As soon as  there is result for each sample so this way you should be enable to already obtain some results to start estadistic calculation. Or just wait untill the last day and then send all results.

AAC 48kbps listening test - open

Reply #10
in windows, start a command prompt in the test folder and type the following command to run all batch files :

C:\TEST>for /L %n IN (1,1,18) DO call sample%n

EDIT :

More complete version, put in a .bat file..

@echo off
for /L %n IN (1,1,18) DO call sample%n
for /L %n IN (1,1,18) DO del sample%n.bat

Edit : if you put this in a batch, you need to escape the % with another % ::

for /L %%n IN (1,1,18) DO call sample%%n.bat
for /L %%n IN (1,1,18) DO del sample%%n.bat

AAC 48kbps listening test - open

Reply #11
It's 1:30 am, and I've done samples 1 and 10-17.  I get an error on sample18.ecf (cannot open : null)

Impressive performance, by the way... Not bad at all, for 48kbps

EDIT : Corrected : if such an error occurs, re-download the offending sample and re-extract and decompress it/them.  Works now.

AAC 48kbps listening test - open

Reply #12
Quote
I get an error on sample18.ecf (cannot open : null)
[a href="index.php?act=findpost&pid=365731"][{POST_SNAPBACK}][/a]

I tried on my side and there's no problem here (sample is waiting.wav). Decoding is fine and all files were loaded

AAC 48kbps listening test - open

Reply #13
Can we send results as soon as we're done all samples? (and where to?)

AAC 48kbps listening test - open

Reply #14
Quote
and where to

Results should be sent to me (bouvigne@mp3-tech.org)

AAC 48kbps listening test - open

Reply #15
Shade[ST] is the first one having finished all the samples. Congrats

AAC 48kbps listening test - open

Reply #16
Come on Gabriel!  One more post and you're at 2500!!!

Félicitations!

AAC 48kbps listening test - open

Reply #17
Quote
How is preferible to send the results? As soon as there is result for each sample so this way you should be enable to already obtain some results to start estadistic calculation. Or just wait untill the last day and then send all results.

I'd suggest you to try not sending them late, as it could be too late if you wait up to the last minute.
Moreover, in the unlikely case that something is going wrong with your results, it would be better for you to be informed sooner.

AAC 48kbps listening test - open

Reply #18
Thanks for reply. Did you receive my email with the first result? is everything alright with the result? It's my first participation in public test.

AAC 48kbps listening test - open

Reply #19
There is some problems with samples' alignment in time in sample3.

AAC 48kbps listening test - open

Reply #20
Quote
There is some problems with samples' alignment in time in sample3.

Should be corrected now.

AAC 48kbps listening test - open

Reply #21
Quote
The AAC @ 48kbps listening test is now open.

out of curisity gabriel, why are you involved on this? are you moving from LAME to AAC?

AAC 48kbps listening test - open

Reply #22
Quote
Quote
There is some problems with samples' alignment in time in sample3.

Should be corrected now.
[a href="index.php?act=findpost&pid=366061"][{POST_SNAPBACK}][/a]


Is it ok if I submit results made with the incorrect timing? The ABX'ing should be ~equally straightforward with the correct timing (I think, for these samples with obvious artifacts).

AAC 48kbps listening test - open

Reply #23
Quote
Quote
The AAC @ 48kbps listening test is now open.

out of curisity gabriel, why are you involved on this? are you moving from LAME to AAC?
[a href="index.php?act=findpost&pid=366067"][{POST_SNAPBACK}][/a]

Wow! We really need well-tuned free AAC encoder (at least LC). Maybe Gabriel can provide patch for FAAC to apply well-tuned LAME PsyAccoustic model to FAAC?

AAC 48kbps listening test - open

Reply #24
I don't think Gabriel will be switching from LAME to AAC dev.  If he does work on AAC, it will be on top of that developement, and I don't know if the psycho acoustic model will work on a different codec.  it would be nice to be enlightened on the subject.

 
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