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Public MP3 Listening Test @ 128 kbps - CLOSED
Sebastian Mares
post Nov 15 2008, 07:48
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Better no, please. smile.gif


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Cutter
post Nov 15 2008, 07:54
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Listen to the low anchor sample to spot artifacts' positions.
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Rotareneg
post Nov 15 2008, 21:55
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As the low anchor's artifacts often seemed to massively distort entire samples without regards to any particular sound or location, it didn't really help me much. sick.gif

With HD-600 headphones and a headphone amp the difference on some of the castanet samples was so faint I often wasn't really sure the difference I was hearing was real or my imagination, but I could reliably ABX them (I think I scored somewhere around 23 out of 30 on average.)

Oh, and the l3enc version caused actual physical discomfort on some samples... MP3 has came a LONG way!

This post has been edited by Rotareneg: Nov 15 2008, 23:06
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Cutter
post Nov 17 2008, 12:34
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Wow, do you test each sample 30 times? I'm a lot lazier and don't go further than 8 times. It's just enough to pass the test with a margin of one error.

This post has been edited by Cutter: Nov 17 2008, 18:57
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Sebastian Mares
post Nov 19 2008, 12:47
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Since the final deadline is approaching, I would like to ask you to slowly think about submitting the results if you haven't already. smile.gif


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Polar
post Nov 19 2008, 12:54
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Any update to your Nov 11 results submission count?
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Sebastian Mares
post Nov 19 2008, 14:16
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I received some results, but I didn't check if they are valid or not.
I am not going to update the counters as it doesn't make any sense now anyways - the final deadline remains November 22nd because I don't have time after that date to process and prepare the results if I extend once more and also, having a test last several months is boring.


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naunaud128
post Nov 19 2008, 21:48
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Hello,

Thanks for you work, but I have a problem.
I clicked on Save ABC/HR Session and the Java Application is not responding anymore...
What should I do?

Regards,

Naunaud.
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Raiden
post Nov 19 2008, 22:43
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from the first post wink.gif :
QUOTE
Warning: There seem to be problems with ABC/HR when JRE 1.6 is installed. If you are affected by hangs, crashes or any other difficulties, please download and install JRE 1.5 Update 15 from http://java.sun.com/products/archive/j2se/5.0_15/index.html. You do NOT have to uninstall your existing copy of JRE 1.6 since both versions can be installed at the same time. However, if you have JRE 1.5 and JRE 1.6 installed, please make sure you start ABC/HR with JRE 1.5 manually. Since the working directory has to be the location where abchr.jar is stored, the best thing you can do is to open a command prompt window, navigate to the location where you stored abchr.jar and the rest of the files and then call "C:\Program Files\Java\jre1.5.0_15\bin\java.exe -jar abchr.jar". Of course, this is only an example which you have to adapt according to where java.exe is stored on your PC.
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kwanbis
post Nov 19 2008, 23:23
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QUOTE (naunaud128 @ Nov 19 2008, 20:48) *
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Wow, you joined almost 3 years ago, it is your first post! blink.gif


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Sebastian Mares
post Nov 20 2008, 00:39
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Yaaaay! emot-toot.gif


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naunaud128
post Nov 20 2008, 01:26
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QUOTE (Raiden @ Nov 19 2008, 23:43) *
from the first post wink.gif :
QUOTE
Warning: There seem to be problems with ABC/HR when JRE 1.6 is installed. If you are affected by hangs, crashes or any other difficulties, please download and install JRE 1.5 Update 15 from http://java.sun.com/products/archive/j2se/5.0_15/index.html. You do NOT have to uninstall your existing copy of JRE 1.6 since both versions can be installed at the same time. However, if you have JRE 1.5 and JRE 1.6 installed, please make sure you start ABC/HR with JRE 1.5 manually. Since the working directory has to be the location where abchr.jar is stored, the best thing you can do is to open a command prompt window, navigate to the location where you stored abchr.jar and the rest of the files and then call "C:\Program Files\Java\jre1.5.0_15\bin\java.exe -jar abchr.jar". Of course, this is only an example which you have to adapt according to where java.exe is stored on your PC.



I'll try that tongue.gif (I should have read carefully the first post...)

QUOTE (kwanbis @ Nov 20 2008, 00:23) *
QUOTE (naunaud128 @ Nov 19 2008, 20:48) *

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Wow, you joined almost 3 years ago, it is your first post! blink.gif


Well, you can learn without posting wink.gif
This is a great forum, I try to not flood with useless comments smile.gif
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Sebastian Mares
post Nov 21 2008, 19:42
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The test will end tomorrow evening (German time), so the ones still testing or who didn't post their results yet, please hurry up! smile.gif


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Pio2001
post Nov 21 2008, 21:47
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Hello,
I'm testing what I can. I started yesterday. Since I'm not in toutch with Hydrogenaudio anymore, I just saw that the test had begun.

And you know what ? This stupid ABC/HR, though reinstalled, kept the open/save default directories of the ancient tests. So yesterday, I ABXed samples 5 and 6 from the multiformat test from two years ago !!!

But tonight I got the right 8 and 9 samples.

I'll try to test about two more samples tonight, but I have to prepare a real-life ABX test between amplifiers and interconnects that takes place tomorrow in France, thanks to Grand X, who owns the listening room and gear, and Ohl, who owns a hardware ABX switch...

Expect my submission in several hours.
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Sebastian Mares
post Nov 21 2008, 22:21
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Results from you would be really awesome Pio!

Still waiting for Alex B's results. biggrin.gif Any maybe Guru. crying.gif


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guruboolez
post Nov 21 2008, 23:19
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QUOTE (Sebastian Mares @ Nov 21 2008, 23:21) *
Results from you would be really awesome Pio!

Still waiting for Alex B's results. biggrin.gif Any maybe Guru. crying.gif

You'll have some results tomorrow - probably not the full set. I promise :-)
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Alex B
post Nov 22 2008, 15:53
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QUOTE (Sebastian Mares @ Nov 21 2008, 23:21) *
Still waiting for Alex B's results...

I finally got the two remaining samples tested and sent my results. smile.gif


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guruboolez
post Nov 22 2008, 16:02
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Mine were also sent few hours ago.
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Neasden
post Nov 22 2008, 19:18
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Can't wait to see the results...
[expectation mode] @guruboolez [/expectation mode]
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Sebastian Mares
post Nov 22 2008, 21:04
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I am sorry, but the results will be published in about two days. You can still post results until then. It seems that some people had some problems saving and I would like to give them the chance to submit since they tested already but sent me wrong files. pinch.gif Pio also said that he might be able to test a few files more today.

I am not updating the listening test site as this short extension isn't worth mentioning.

Edit: First "correction" just arrived. Somebody sent the ECF files by mistake instead of the ERF ones. smile.gif

This post has been edited by Sebastian Mares: Nov 22 2008, 21:06


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Neasden
post Nov 23 2008, 02:01
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Can we expect an "extra" listening test with the same samples involving Nero/AAC, aoTuV 5.5 and MPC/SV8, or is this kind of thing a little bit out of place these days?
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Sebastian Mares
post Nov 23 2008, 09:30
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Well, this was definitely the last test at 128 kbps, that is for sure. wink.gif

The next test will focus on AAC encoders at 80 kbps and the winner of that test will be featured in a multiformat listening test at the same bitrate where Vorbis will participate as well. If Musepack developers think that their encoder is competitive at 80 kbps, I can think about including it, but last time I checked, MPC was good only for > 128 kbps.


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Polar
post Nov 23 2008, 10:09
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Correct me if I'm wrong, but I thought there was some degree of agreement to testing the 96k-ish range next. It's been stated numerous times before that 128k has long bumped into the boundaries of the practically, statistically viably and publicly testable (and I expect this test to largely confirm that), and that the real competition now lies in the near-transparent bitrates, which have hardly ever been thoroughly publicly put to the test. Fwiw, I'm more than willing to host the test samples again.

On second thought, maybe we should be giving Sebastian a break, and let him properly finish this test's results, which I'm sure we're all looking forward to.

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Neasden
post Nov 23 2008, 19:18
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isn't it "technically" wrong to call "128 kbps test" when the encoders are basically using VBR? Because for sure there will be higher bitrates than 128.
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halb27
post Nov 23 2008, 20:09
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QUOTE (Neasden @ Nov 23 2008, 20:18) *
isn't it "technically" wrong to call "128 kbps test" when the encoders are basically using VBR? Because for sure there will be higher bitrates than 128.

In a very theoretical sense the answer may be 'yes' and in fact VBR brings a slight problem for chosing encoder parameters in order to give a fair comparison to the contenders.
In a practical sense these problems are solved by considering average VBR bitrate for a large variety of tracks (not those investigated within the test).


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