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AAC@128kbps listening test - CLOSED, Everyone is invited
ErikS
post Jun 13 2003, 09:15
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The end date 15:th still holds? There will be enough results by then?
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mpcfiend
post Jun 13 2003, 09:46
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QUOTE
Hurray! Now i got things rolling. Just visited at ff123 artifact training page and after that artifacts just jumped in my ears...


This is **NOT** a good thing for you! It's kinda too bad you can't turn back the clock.

I started kicking myself as soon as I gained the ears to be annoyed with apx and api. Listening for artifacts is kinda like taking up smoking cause you're curious. Ya just can't quit! wink.gif


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askoff
post Jun 13 2003, 15:50
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QUOTE (mpcfiend @ Jun 13 2003 - 12:46 AM)
QUOTE
Hurray! Now i got things rolling. Just visited at ff123 artifact training page and after that artifacts just jumped in my ears...


This is **NOT** a good thing for you! It's kinda too bad you can't turn back the clock.

I started kicking myself as soon as I gained the ears to be annoyed with apx and api. Listening for artifacts is kinda like taking up smoking cause you're curious. Ya just can't quit! wink.gif

Maybay you are right. I should stop this before i have to find all my CD:s and rerip everythin under 256kbps mp3's. Luckily i quit smoking two years a go after trying it couple of years... Yes we all can do it smile.gif

This post has been edited by askoff: Jun 13 2003, 15:51
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den
post Jun 14 2003, 10:53
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Phew, just got them knocked over. laugh.gif

Great stuff Roberto. Looking forward to the results, and then the big comparison against the other 128 kbit lossy codecs... B)

Den.


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rjamorim
post Jun 15 2003, 04:00
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Hello.

I'd like to inform that the test finish won't be postponed. In 24 hours counting from now (at midnight Brazilian time, 4AM GMT, 8PM Pacific time), I'll close the test, delete the sample packages from the servers, won't accept any more sample scores and will start calculating the results.

I'd like to invite anyone that didn't take the test yet to download some samples and dedicate some of your time on Sunday to participate. All scores will be very welcome. BTW, I suggest you choose packages randomly, and don't start with 1, or we might end up too many results for 1 and too few for others.

Thanks a lot for everyone who participated. If I manage to maintain my planned schedule, the extension test comparing the AAC winner to other formats will start in a month.

Kind regards;

Roberto Amorim.

Edit: BTW: Check out my updated test page: wink.gif
http://rarewares.hydrogenaudio.org/test/
Many thanks to Dibrom for creating the design baseline

This post has been edited by rjamorim: Jun 15 2003, 04:09


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saratoga
post Jun 15 2003, 05:48
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Any reason those torrents don't work? I get nothing but tracker errors huh.gif

I'm running 4 other torrents with no trouble, so I don't think its my end.
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Dibrom
post Jun 15 2003, 06:20
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QUOTE (Mike Giacomelli @ Jun 14 2003 - 09:48 PM)
Any reason those torrents don't work?  I get nothing but tracker errors huh.gif

I'm running 4 other torrents with no trouble, so I don't think its my end.

The tracker is offline atm, sorry. I'll try and set it back up sometime tonight.
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rjamorim
post Jun 16 2003, 04:01
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Test closed!

Thanks for everybody that participated.

For those interested, here is the amount of participants:
Sample01: 18
Sample02: 13
Sample03: 13
Sample04: 15
Sample05: 15
Sample06: 14
Sample07: 13
Sample08: 11
Sample09: 14
Sample10: 12
Sample11: 12
Sample12: 14

Results will be made available ASAP at
http://rarewares.hydrogenaudio.org/test/


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Frank Klemm
post Jun 16 2003, 11:06
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QUOTE (rjamorim @ Jun 4 2003 - 11:53 PM)
I just started a new public listening test.
Addition: a specific web site for the test has been created: http://rarewares.hydrogenaudio.org/test/

The purpose is to find what encoder performs best encoding AAC at 128kbps

The encoders and parameters tested are:
Psytel AACenc 2.15  -br 128
Ahead/Nero 5.5.10.35  128kbps CBR, high quality
Sorenson Squeeze 3.5 (FhG Pro) 128kbps
Apple QuickTime 6.3 (Dolby) 128kbps high quality
FAAC 1.17b -a 64  (64kbps/channel)

--Who should take the test?

Anyone interested in AAC quality, or people that have no interest but would like to help making this test better.
You don't need excellent hearing, but some good gear is welcome (headphones are must-have).

--How do I take the test?

Download ABC/HR + the readme file here or here. If you already have ABC/HR, get the readme here.
Further instructions, and links to the sample packages, are inside the readme.

For people using BitTorrent: I strongly suggest you download using it.
The torrents are available here:
http://static.hydrogenaudio.org/extra/AACTest/
It would help me save bandwidth and you will probably download faster too smile.gif

The average size of the sample packages is 4Mb. It sums to 47Mb, all the 12 packages.

Edit: For those that already downloaded packages, read here

--I'm on Linux/MacOS/something other than Windows. Can I take the test?

You can. But you won't be able to use the ABC/HR utility, that is Win32 only. Since the reference file must be hidden (That's the HR in the name), tests performed without it wouldn't be valid. So, I can't plot your scores against others. But your comments on sample quality and artifacts would still be welcome.

--When will the test finish?

The test is scheduled to end on June 15. This date may be extended if proved necessary.

If you have any other question, please post in this thread.

Thank-you very much,

Roberto.

Where can I download the audio files? Firewall allows access on port #23 and #80.


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Garf
post Jun 16 2003, 11:12
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The test was closed already. Files are no longer available I think - though maybe BitTorrent works (not behind a firewall though). Edit: Nope, BitTorrent also no longer works.

They were the same ones from the 64kbps test. If you don't have those, someone can probably set you up with them.
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rjamorim
post Jun 16 2003, 19:17
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QUOTE (Frank Klemm @ Jun 16 2003 - 07:06 AM)
Where can I download the audio files? Firewall allows access on port #23 and #80.

Too bad, Frank.

Well, as you probably noticed in the post you quoted:
QUOTE
--When will the test finish?

The test is scheduled to end on June 15. This date may be extended if proved necessary.


Hopefully you'll be able to participate in the extension test. smile.gif

Regards;

Roberto.


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