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Please rate my foobar double abx blind test?
dsdsds
post Jul 27 2012, 08:22
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foo_abx 1.3.4 report
foobar2000 v1.1.11
2012/07/27 00:58:16

File A: C:\Documents and Settings\RueK\Mis documentos\Mi música\D#4\TRACK (451).flac
File B: C:\Documents and Settings\RueK\Mis documentos\TRACK (451).mp3

00:58:16 : Test started.
00:59:17 : 01/01 50.0%
00:59:58 : 01/02 75.0%
01:01:00 : 01/03 87.5%
01:01:36 : 01/04 93.8%
01:04:11 : 02/05 81.3%
01:05:02 : 03/06 65.6%
01:06:11 : 04/07 50.0%
01:06:49 : 05/08 36.3%
01:07:19 : 06/09 25.4%
01:07:48 : 06/10 37.7%
01:08:15 : 06/11 50.0%
01:09:02 : 07/12 38.7%
01:09:26 : 07/13 50.0%
01:09:37 : 08/14 39.5%
01:09:58 : 08/15 50.0%
01:10:53 : 09/16 40.2%
01:11:16 : 10/17 31.5%
01:11:33 : 11/18 24.0%
01:11:59 : 12/19 18.0%
01:12:33 : 13/20 13.2%
01:13:00 : 14/21 9.5%
01:13:18 : 15/22 6.7%
01:13:38 : 16/23 4.7%
01:13:57 : 16/24 7.6%
01:14:31 : 17/25 5.4%
01:15:34 : 18/26 3.8%
01:16:09 : 18/27 6.1%
01:16:24 : 18/28 9.2%
01:16:54 : 19/29 6.8%
01:18:13 : 20/30 4.9%
01:18:44 : 20/31 7.5%
01:19:04 : 20/32 10.8%
01:19:55 : 21/33 8.1%
01:20:07 : 22/34 6.1%
01:20:59 : 22/35 8.8%
01:26:27 : 22/36 12.1%
01:26:54 : 22/37 16.2%
01:27:08 : 23/38 12.8%
01:33:56 : 24/39 10.0%
01:34:14 : 24/40 13.4%
01:35:01 : 24/41 17.4%
01:35:06 : Trial reset. <--- after this i was just playing as i gave up so dont take the rest seriously.
01:35:34 : 00/01 100.0%
01:35:41 : Trial reset.
01:36:07 : 00/01 100.0%
01:36:33 : 00/02 100.0%
01:36:50 : 00/03 100.0%
01:36:55 : Trial reset.
01:36:56 : Trial reset.
01:36:56 : Trial reset.
01:37:21 : 01/01 50.0%
01:37:26 : Trial reset.
01:37:32 : 00/01 100.0%
01:37:33 : Trial reset.
01:37:35 : 01/01 50.0%
01:37:37 : Trial reset.
01:37:37 : Trial reset.
01:37:39 : 00/01 100.0%
01:37:40 : Trial reset.
01:37:41 : 00/01 100.0%
01:37:42 : Trial reset.
01:37:43 : 00/01 100.0%
01:37:44 : Trial reset.
01:37:45 : 01/01 50.0%
01:37:46 : Trial reset.
01:37:47 : 00/01 100.0%
01:37:48 : Trial reset.
01:37:50 : Trial reset.
01:37:52 : Trial reset.
01:37:55 : Trial reset.
01:37:56 : 00/01 100.0%
01:38:01 : Test finished.

----------
Total: 27/54 (55.4%)



it was pretty hard, i was using my 30$ 2.1 speakers, it was a normal pop song, well encoded 320 kbps using the maximum possible settings cbr and the lossless file (which had a 22.1 khz cutoff)



So i know the total result i messed up thanks to me playing with the abx extension of foobar i didnt know the results could be saved after pressing the exit button but what do you think of my hearing? this was my first test of this kind.
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dhromed
post Jul 27 2012, 09:08
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You've demonstrated that you probably can't hear any differences between that FLAC and its mp3.

For fun, try a really low quality mp3, and see what happens.
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dsdsds
post Jul 27 2012, 09:23
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QUOTE (dhromed @ Jul 27 2012, 10:08) *
You've demonstrated that you probably can't hear any differences between that FLAC and its mp3.

For fun, try a really low quality mp3, and see what happens.


really low quality like? 32 kbps? 128? i will try then thanks for your feedback.
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dhromed
post Jul 27 2012, 10:52
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Something like VBR v9, yes. Just to know what extreme compression sounds like — it might even sound better than you first thought, and it will prevent you from hearing artifacts in high quality mp3s where none exist, since you become familiar with how actual artifacts sound, instead of imagined ones.
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db1989
post Jul 27 2012, 11:20
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Well, you did reach <5% at 18/26, but there was a lot of oscillation between correct and incorrect guesses before that, so that p-value alone may not be very indicative of much of a genuine effect; someone better versed in the relevant statistics can elaborate on this.

But yes, everything after that is rubbish! So why bother including it? wink.gif

This post has been edited by db1989: Jul 27 2012, 11:43
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dhromed
post Jul 27 2012, 12:00
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QUOTE (db1989 @ Jul 27 2012, 12:20) *
But yes, everything after that is rubbish! So why bother including it? wink.gif


Because a set of 100%'s looks to the uninitiated like a list of straight As. Obviously super-good, right?
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