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Multiformat@128kbps public listening test - OPEN, (again)
rjamorim
post May 12 2004, 17:18
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Starting again, after last week's failure...

I'd like to announce the opening of my Multiformat at 128kbps public listening test.

The test consists of comparing how 6 encoders: iTunes AAC, Ogg Vorbis, Lame MP3, Musepack, WMA Std. and Atrac3 behave compressing 18 different samples representing a wide spectrum of musical styles.

People interested in participating are invited to visit this page:
http://www.rjamorim.com/test/multiformat12...esentation.html

The test will end on May 23rd and results will be posted soon after.

Best regards;
Roberto.


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rjamorim
post May 12 2004, 17:24
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For those using BitTorrent, you can check stats here:
http://www.rarewares.org/tracker/mystats.php

Big thanks to dev0 for helping me set up the torrents.


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Busemann
post May 12 2004, 17:32
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You should use the new iTunes 4.5 / QT 6.5.1 AAC encoder.. It brought a lot of optimizations compared to the one in 4.2

This post has been edited by Busemann: May 12 2004, 17:33
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Jack Comics
post May 12 2004, 17:34
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QUOTE (Busemann @ May 12 2004, 11:32 AM)
You should use the new iTunes 4.5 / QT 6.5.1 AAC encoder.. It brought a lot of optimizations compared to the one in 4.2

While I agree for a different reason, several forum members complained of new artifacts in QuickTime 6.5.1 encoded AAC files that weren't in QuickTime 6.5.0 encoded AAC files. Thus the AAC files encoded via the newer version of QuickTime were of a lesser quality.
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rjamorim
post May 12 2004, 17:35
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QUOTE (Busemann @ May 12 2004, 01:32 PM)
You should use the new iTunes 4.5 / QT 6.5.1 AAC encoder.. It brought a lot of optimizations compared to the one in 4.2

http://www.hydrogenaudio.org/forums/index....ndpost&p=207158


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JohnV
post May 12 2004, 17:37
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lol laugh.gif


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PoisonDan
post May 12 2004, 17:48
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QUOTE (Busemann @ May 12 2004, 06:32 PM)
You should use the new iTunes 4.5 / QT 6.5.1 AAC encoder.. It brought a lot of optimizations compared to the one in 4.2

You must be confusing this thread with this one. The listening test is open now, the discussion about encoders is over. I mean, really, you had more than a month time to discuss this! rolleyes.gif

Besides, as Roberto already mentioned in the thread he linked to, those "optimizations" were purely for graph watchers and didn't seem to bring any audio quality improvements (quite the contrary).


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Dologan
post May 12 2004, 17:56
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Already downloading at ~55 kbps, uploading ~25 kbps overall with all packages.

I'll be leaving my broadband but firewalled connection at the service of the community for a while, so leech in. smile.gif
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WarBird
post May 12 2004, 20:46
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Dont seem to be able to access the test page sad.gif
Anyone care to share the links for the .torrents ?
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rjamorim
post May 12 2004, 20:49
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QUOTE (WarBird @ May 12 2004, 04:46 PM)
Dont seem to be able to access the test page sad.gif
Anyone care to share the links for the .torrents ?

That's very weird...

The torrents are here:
http://www.rarewares.org/torrents/

And you can get abc-ht_bin.zip here:
http://pessoal.onda.com.br/rjamorim/abc-hr_bin.zip


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bond
post May 12 2004, 21:04
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i also cant access your listening test pages (including http://www.rjamorim.com/test)


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rjamorim
post May 12 2004, 21:05
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Hrm... I wonder if 1and1 is down.


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Jack Comics
post May 12 2004, 21:08
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Yep, down here as well.
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Sebastian Mares
post May 12 2004, 21:18
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Hmmm... At first, the samples were screwed, now the page is down... Maybe it's a sign from above. tongue.gif

This post has been edited by Sebastian Mares: May 28 2004, 16:20


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rjamorim
post May 12 2004, 21:22
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QUOTE (Sebastian Mares @ May 12 2004, 05:18 PM)
Maybe it's a sign from above. tongue.gif

It must be!!!

First, I postpone because of a surgery
Second, I postpone because ff123 started a parallel test
Third, I cancel the test because it was all bork.
Fourth, I arrive home from a trip to find my main NTFS partition nearly completely corrupt. Spent monday and tuesday on their entireties fixing this issue.
And now, 1and1 goes bork and stops serving my pages.

I must have thrown stones at the cross.


Oh, well, there's nothing I can do now. Let's just wait 1and1 get their stuff fixed ASAP.

They promise 99.9% uptime... wink.gif

This post has been edited by rjamorim: May 12 2004, 21:25


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rjamorim
post May 12 2004, 22:06
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Weee! Seems to be back online. smile.gif


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harashin
post May 12 2004, 22:25
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Downloaded. This time I take the tests more carefully. (I did cancelled one in a day.)


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caligae
post May 12 2004, 22:26
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QUOTE (rjamorim @ May 12 2004, 10:22 PM)
They promise 99.9% uptime... wink.gif

Well, that's nearly 9 hours per year. Looks like the still got some downtime left :-)
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rjamorim
post May 12 2004, 22:28
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Well, if no grave issues are discovered until tomorrow, I would like to invite anyone with "contacts" to post about this test on Slashdot, Kuro5hin, RAO... and anywhere else you deem appropriate.

Thank-you.

Regards;

Roberto.


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tcmjr
post May 12 2004, 22:40
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Esse eu vou participar tongue.gif


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QuantumKnot
post May 13 2004, 00:36
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QUOTE (Sebastian Mares @ May 13 2004, 06:18 AM)
Hmmm... At first, the samples were screwed, not the page is down... Maybe it's a sign from above. tongue.gif

Being the inquisitive beings that we are, I think all these signs makes us even more determined to carry it out and see the results that we probably weren't supposed to see. rolleyes.gif
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phonatic
post May 13 2004, 01:25
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In case any Mac OS X users besides myself try to participate:

You need the latest Java (1.4.2). Earlier versions may hang after you ABX for a little while. You can control-click on ABC-HR's dock icon and tell it to force quit if that happens.

If the Java 1.4.2 installer complains you need version 10.3.1 or higher of Mac OS X and you already have that, simply control-click on the installer package, Show Package Contents from the contextual menu, and delete the script named VolumeCheck.

You can easily enough get command-line utilities for all the required decoders except for Ogg Vorbis. For that, I used Amadeus to convert .ogg to .wav, since I already have it. There is a demo version available. Fink makes it easy to get flac, madplay and mppdec. Maybe Fink can give you oggdec, but I didn't see a way, unless it's a part of libogg. The pre-compiled faad mentioned in the instructions Roberto included works, but you need to add a line to clicodecs.cfg, like this one:

m4a, faad -o %o %i

Otherwise faad will not process AAC files with the .m4a extension.

Once you have all the decoders, and your sample files (unzipped inside the abc-hr_bin directory) go ahead and chmod 755 decodeall.sh as directed, but also remember to move it into the abc-hr_bin directory (from the Terminal):

mv decodeall.sh ..

That should do the trick. Or you can just drag and drop it in the Finder if you prefer, but you're going to execute it by typing this in the Terminal, anyway:

./decodeall.sh

I don't know if I will submit any results. I have downloaded sample packages 1, 3, 5, and 12 and I can so far reliably ABX only one sample from package 1. Guess I am deaf, after all. :-) Or maybe these encoders are mostly pretty good.

Hope this helps some Mac users.

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rjamorim
post May 13 2004, 01:40
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Great guide! Thank-you very much for posting it smile.gif

About oggdec/ogg123 for MacOS X:
http://fink.sourceforge.net/pdb/package.php/vorbis-tools

This post has been edited by rjamorim: May 13 2004, 01:43


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Crocodil
post May 13 2004, 13:31
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Hi smile.gif

I think I'm about to take part in my first listening test wink.gif Starting downloads right now smile.gif

Thank you rjamorin for your persistance and hard work in making this test happen smile.gif

By the way, I don't want to be picky, but wouldn't it be better if Musepack's link (on the test's presentation page) was pointing to Musepack Open Source Project ? I've noticed just yesterday, that it's already up and running, though still a bit "work in progress" smile.gif

Best regards,

Crocodil.
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Rotellian
post May 13 2004, 13:37
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Is it necessary to download the ABC/HR again? I only ask because I think i may have some bad news. I downloaded sample 2 zip (today) and there appears to be some problems with one sample being noticably louder than the others and one with a glitch that clearly identifies it. I know this is the reason why the test was scrapped and restarted, but oddly enough last time i listened i didnt have any problems with the sample 2 package - now i do. Perhaps I have missed something. Just thought i should let you know.
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