What does ABX really prove? |
What does ABX really prove? |
Nov 10 2007, 18:59
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#1
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Group: Members Posts: 19 Joined: 8-November 07 Member No.: 48571 |
I recently did some ABX tests of music encoded in FLAC levels 0-8.
To my surprise I could tell the difference more often than not. Yet I couldn't help but wonder, what does this really prove? It seems that if an audible difference exists between two tracks, that difference wouldn't necessarily indicate anything as to which track is of higher quality, but rather, that those two tracks are merely different from one another... Am I missing the point in all of this? |
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Nov 11 2007, 03:16
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#2
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Group: Members Posts: 4133 Joined: 2-September 02 Member No.: 3264 |
I still don't really understand what you did. Could you just post the logs?
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Nov 11 2007, 04:56
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#3
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Group: Members Posts: 19 Joined: 8-November 07 Member No.: 48571 |
I still don't really understand what you did. Could you just post the logs? I would if I had them. All I did was ABX Radiohead's Kid A, encoded in FLAC level 4 and level 8, both directly from the CD. I matched the correct tracks to one another 9 of the 10 times I ran it. That's all. Maybe I screwed something up while encoding them that caused one to sound different from the other. Ultimately I had no idea which one was which, I just managed to notice the differences and match the tracks accordingly. Hence my post... |
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Nov 11 2007, 13:03
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#4
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![]() LAME developer Group: Developer Posts: 761 Joined: 22-September 01 Member No.: 5 |
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Nov 11 2007, 23:38
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#5
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Group: Members Posts: 19 Joined: 8-November 07 Member No.: 48571 |
All I did was ABX Radiohead's Kid A, encoded in FLAC level 4 and level 8, both directly from the CD. Do I get you right, you ripped it twice from the CD? And what does the difference you hear sound like? Some popping noise, some click?It was actually quite interesting... When I listened to substantial chunks of each track I couldn't tell the difference at all. I then came up with a little method, of switching between A,X,Y,B, in rapid succession, with about 1-2 seconds in between each switch. I then noticed that if when I did this, cycling through the four buttons clockwise for example, I would hear shifts in the overall sound (im not sure how to desribe those shifts, I just referred to them in my mind as up and down). So in doing so, if I heard upshift, downshift, upshift, downshift, I would then answer accordingly, and got it right 9 out of 10 times. Like I said before though, I was never challenging ABX, and admitted that I might have screwed up the encoding processes of the tracks, and maybe that was what caused me to be able to discern the difference. The tracks were both ripped from the same CD however, and both were ripped under the same conditions (i.e, no other programs running at the time). I suppose I could and do it again to see if its repeatable, and to maybe stop so many people from bashing me, but my post was never about the ABX test I did on those tracks to begin with, it was about a question that those tests led me to... |
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audioslut512 What does ABX really prove? Nov 10 2007, 18:59
user Please show details of your abx tests.
Do you have... Nov 10 2007, 19:05
tgoose An ABX test tells you how likely it is that you ca... Nov 10 2007, 19:06
maksm No, you're not.
If there is a difference, and ... Nov 10 2007, 19:07
tgoose QUOTE (maksm @ Nov 10 2007, 18:07) No, yo... Nov 10 2007, 19:11
greynol There are other tests to rank differences. The po... Nov 10 2007, 19:15
audioslut512 QUOTE (greynol @ Nov 10 2007, 13:15) Ther... Nov 10 2007, 19:36
Nikaki Doing ABX on FLAC and actually being successful in... Nov 10 2007, 19:20
greynol An ABX test cannot prove that there isn't a di... Nov 10 2007, 19:40
audioslut512 QUOTE (greynol @ Nov 10 2007, 13:40) Actu... Nov 10 2007, 19:43
greynol I concur with the first response you were given, b... Nov 10 2007, 19:50
audioslut512 QUOTE (greynol @ Nov 10 2007, 13:50) I co... Nov 10 2007, 20:03
Mike Giacomelli QUOTE (audioslut512 @ Nov 10 2007, 12:03)... Nov 10 2007, 20:08
audioslut512 QUOTE (Mike Giacomelli @ Nov 10 2007, 14... Nov 10 2007, 23:47
guruboolez QUOTE (audioslut512 @ Nov 11 2007, 00:47)... Nov 11 2007, 01:29
SiriusB QUOTE (audioslut512 @ Nov 10 2007, 16:47)... Nov 12 2007, 08:25
Vitecs Not to mention what author is doing with his ABXin... Nov 12 2007, 09:14
cliveb QUOTE (Vitecs @ Nov 12 2007, 08:14) Can i... Nov 12 2007, 09:54
greynol You're not understanding.
If you think you... Nov 10 2007, 20:08
Cosmo QUOTE (audioslut512 @ Nov 10 2007, 12:59)... Nov 10 2007, 20:31
eevan No offence, but having read all your posts, I... Nov 11 2007, 00:17
AndyH-ha In the laboratory, and in most audiophile living r... Nov 11 2007, 00:31
greynol What an incredible waste of time!
I propose t... Nov 11 2007, 00:39
odyssey How can you discuss this?
QUOTE (audioslut512 ... Nov 11 2007, 00:51
kwanbis QUOTE (audioslut512 @ Nov 10 2007, 17:59)... Nov 11 2007, 01:11
audioslut512 just forget it kids. Nov 11 2007, 02:59
sld QUOTE (audioslut512 @ Nov 11 2007, 09:59)... Nov 12 2007, 05:34
audioslut512 QUOTE (sld @ Nov 11 2007, 23:34) QUOTE (a... Nov 12 2007, 07:09
sld QUOTE (audioslut512 @ Nov 12 2007, 14:09)... Nov 12 2007, 10:06
MedO Well, I just noticed that even I *might* be able t... Nov 12 2007, 10:33
tgoose QUOTE (greynol @ Nov 10 2007, 18:40) An A... Nov 11 2007, 10:18
Alexxander QUOTE (audioslut512 @ Nov 11 2007, 05:56)... Nov 11 2007, 11:06
Light-Fire QUOTE (audioslut512 @ Nov 10 2007, 22:56)... Nov 12 2007, 08:04
shadowking I wouldn't even want to see any lossless abx l... Nov 11 2007, 05:07
William audioslut512:
What is your definition of ABX? Wha... Nov 11 2007, 06:14
audioslut512 QUOTE (William @ Nov 11 2007, 00:14) audi... Nov 11 2007, 07:54
Bad Monkey Just run the bit-comparator to check you are in fa... Nov 11 2007, 10:11
kjoonlee "More often than not" does not equal ... Nov 11 2007, 12:34
greynol The point is that you cannot make a proper conclus... Nov 11 2007, 23:43
audioslut512 QUOTE (greynol @ Nov 11 2007, 17:43) The ... Nov 11 2007, 23:44
greynol You chose not to accept the fact that you couldn... Nov 12 2007, 00:00
audioslut512 QUOTE (greynol @ Nov 11 2007, 18:00) You ... Nov 12 2007, 06:57
Heresiarch There is just no point in ABXing lossless files. I... Nov 12 2007, 00:09
greynol QUOTE (Heresiarch @ Nov 11 2007, 15:09) T... Nov 12 2007, 01:13
Bad Monkey He doesn't even know if there are errors. It... Nov 12 2007, 02:08
SamHain86 @MedO-
-When you run anythingABX test, I always fo... Nov 12 2007, 11:43
sld MedO, it also happens on my Core Duo laptop, thoug... Nov 12 2007, 15:16![]() ![]() |
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