IPB

Welcome Guest ( Log In | Register )

What does ABX really prove?
audioslut512
post Nov 10 2007, 18:59
Post #1





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?
Go to the top of the page
+Quote Post
 
Start new topic
Replies
audioslut512
post Nov 11 2007, 02:59
Post #2





Group: Members
Posts: 19
Joined: 8-November 07
Member No.: 48571



just forget it kids.
Go to the top of the page
+Quote Post
sld
post Nov 12 2007, 05:34
Post #3





Group: Members
Posts: 1017
Joined: 4-March 03
From: Singapore
Member No.: 5312



QUOTE (audioslut512 @ Nov 11 2007, 09:59) *
just forget it kids.

You're tacitly admitting you're trolling this forum?
Go to the top of the page
+Quote Post
audioslut512
post Nov 12 2007, 07:09
Post #4





Group: Members
Posts: 19
Joined: 8-November 07
Member No.: 48571



QUOTE (sld @ Nov 11 2007, 23:34) *
QUOTE (audioslut512 @ Nov 11 2007, 09:59) *

just forget it kids.

You're tacitly admitting you're trolling this forum?



Trolling for whom?

I am just trying to understand how this stuff works and get crucified for it.

Thanks again.
Go to the top of the page
+Quote Post
sld
post Nov 12 2007, 10:06
Post #5





Group: Members
Posts: 1017
Joined: 4-March 03
From: Singapore
Member No.: 5312



QUOTE (audioslut512 @ Nov 12 2007, 14:09) *
Trolling for whom?

I am just trying to understand how this stuff works and get crucified for it.

Thanks again.

I'm sorry, then.what.was.the.quote.for?

QUOTE (audioslut512 @ Nov 11 2007, 09:59) *
just forget it kids.


Wasn't it on the part of your closed mind to refuse to accept the logical explanations provided by the more knowledgeable individuals in this forum? And you blame others for rightly 'crucifying' your obstinacy?

The entire forum is still waiting for your bit-comparisons and ABX logs with p values < 0.1%.

This post has been edited by sld: Nov 12 2007, 10:10
Go to the top of the page
+Quote Post
MedO
post Nov 12 2007, 10:33
Post #6





Group: Members
Posts: 341
Joined: 24-August 05
Member No.: 24095



Well, I just noticed that even I *might* be able to ABX FLAC -4 from -8, given the CPU usage pattern explanation... you see, my CPU emits a (very low-volume) high-pitched whine when it's idle, that changes when the CPU is used. The problem is well known for the Core2-based MacBook IIRC, but also occurs on other systems including my laptop, apparently.

Well, if decoding the two files causes different CPU usage, it might very well be possible to hear a small difference because of this phenomenon. Because of its high pitch, I do hear the noise over music I play back when running Linux (it's worse there, don't ask me why), but I usually have something running in the background (Seti@Home, Prime95) to keep the processor occupied, which stops the whine.

If both files are decoded completely before playback however, I don't think it should be possible.
Go to the top of the page
+Quote Post

Posts in this topic
- 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
- - Mike Giacomelli   I still don't really understand what you did. ...   Nov 11 2007, 03:16
|- - audioslut512   QUOTE (Mike Giacomelli @ Nov 10 2007, 21...   Nov 11 2007, 04:56
|- - 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
|- - robert   QUOTE (audioslut512 @ Nov 11 2007, 04:56)...   Nov 11 2007, 13:03
||- - audioslut512   QUOTE (robert @ Nov 11 2007, 07:03) QUOTE...   Nov 11 2007, 23:38
|- - 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


Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



RSS Lo-Fi Version Time is now: 22nd October 2014 - 17:43