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Vorbis aoTuV b5 @ q5 testing samples, including ABX logs
moozooh
post Oct 26 2006, 12:29
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Here are my favourite samples I use to test Vorbis at q4 and q5. They represent Vorbis's long known problem with sharp noise and feature some nifty pre-echo on top of that. smile.gif

The samples were taken from the following tracks:

Autechre — [Gantz Graf EP #01] Gantz Graf [3:58];
Abfahrt Hinwil — [VA — Everything Is Green #02] Everything Is Green [4:25];
Nine Inch Nails — [Quake OST #01] Quake Theme [5:08].

CODE
foo_abx v1.2 report
foobar2000 v0.8.3
2006/10/26 01:01:52

File A: file://C:\Files\test samples\ae_gg.wav
File B: file://C:\Files\test samples\ae_gg.ogg

01:01:52 : Test started.
01:02:18 : 01/01 50.0%
01:03:00 : 02/02 25.0%
01:03:22 : 03/03 12.5%
01:05:29 : 04/04 6.3%
01:06:26 : 05/05 3.1%
01:08:01 : 06/06 1.6%
01:09:23 : 07/07 0.8%
01:09:56 : 08/08 0.4%
01:10:10 : Test finished.

----------
Total: 8/8 (0.4%)

That was rather easy. Vorbis just smeared the granular synthesis.

CODE
foo_abx v1.2 report
foobar2000 v0.8.3
2006/10/26 14:42:34

File A: file://C:\Files\test samples\eig.wav
File B: file://C:\Files\test samples\eig.ogg

14:42:34 : Test started.
14:43:13 : 01/01 50.0%
14:43:24 : 02/02 25.0%
14:43:45 : 03/03 12.5%
14:43:55 : 04/04 6.3%
14:44:06 : 05/05 3.1%
14:44:18 : 06/06 1.6%
14:44:31 : 07/07 0.8%
14:44:49 : 08/08 0.4%
14:44:51 : Test finished.

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Total: 8/8 (0.4%)

Easy, again. On the other hand, LAME -b 320 fails on this sample completely, even worse than aoTuV at q5 despite twice the bit rate.
BTW, this is my favourite pre-echo sample, the attacks are sharp but not very disturbing, and the background is very clean. The track itself is very nice as well.

CODE
foo_abx v1.2 report
foobar2000 v0.8.3
2006/10/26 14:46:39

File A: file://C:\Files\test samples\nin_quake.wav
File B: file://C:\Files\test samples\nin_quake.ogg

14:46:39 : Test started.
14:47:14 : 01/01 50.0%
14:47:30 : 02/02 25.0%
14:47:45 : 02/03 50.0%
14:48:20 : 03/04 31.3%
14:50:09 : 04/05 18.8%
14:53:24 : 04/06 34.4%
14:53:27 : Trial reset.
14:54:10 : 01/01 50.0%
14:54:33 : 02/02 25.0%
14:54:57 : 03/03 12.5%
14:55:22 : 04/04 6.3%
14:57:37 : 05/05 3.1%
14:58:23 : 06/06 1.6%
14:59:18 : 07/07 0.8%
14:59:48 : 08/08 0.4%
14:59:49 : Test finished.

----------
Total: 12/14 (0.6%)

That was much harder. The difference is very subtle, almost nonexistant background noise. At my first attempt, I was confident at the beginning, but shortly after started to fail and decided to take a short break. After that, I once again understood the difference to concentrate on, and passed the test without any further mistakes.

Enjoy.

EDIT: Oh, completely forgot to post my testing "equipment".
Soundcard: Creative SB Live! 5.1.
Headphones: Sharp HP-MD33-S.

This post has been edited by Mo0zOoH: Oct 26 2006, 12:51
Attached File(s)
Attached File  ae_gg.wv ( 2.17MB ) Number of downloads: 939
Attached File  eig.wv ( 1.28MB ) Number of downloads: 4611
Attached File  nin_quake.wv ( 1.74MB ) Number of downloads: 541
 


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VolMax
post Oct 26 2006, 16:45
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Member No.: 12234



It was hard for me. Difference is negligible.

BS; Lancer(SSE) [20061005] (based on aoTuV r1 [20051117])
-q 3

CODE
foo_abx v1.2 report
foobar2000 v0.8.3
2006/10/26 21:21:41

File A: file://C:\tmp\eig.ogg
File B: file://C:\tmp\eig.wv

21:21:42 : Test started.
21:22:29 : 01/01  50.0%
21:22:44 : 02/02  25.0%
21:22:49 : 02/03  50.0%
21:23:17 : 03/04  31.3%
21:23:26 : 03/05  50.0%
21:23:37 : 04/06  34.4%
21:23:50 : 05/07  22.7%
21:24:01 : 06/08  14.5%
21:24:08 : 07/09  9.0%
21:24:38 : 08/10  5.5%
21:25:14 : 08/11  11.3%
21:25:36 : 09/12  7.3%
21:25:41 : Test finished.

----------
Total: 9/12 (7.3%)


ae_gg.mp3: Can't ABX lame -V 0

Audigy1 + rarity Electronika_TDS-5M + Bad_ears.sys ;-)

P.S. "eig.wv" - i like it!
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halb27
post Oct 26 2006, 19:26
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From: Dormagen, Germany
Member No.: 25015



Thanks a lot for your great eig sample.

I am pretty deaf as towards pre-echo, but with this sample even me can hear the problem.


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Firon
post Oct 27 2006, 22:50
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Good lord, LAME handles this one poorly. Even at 320kbps, it's still audible! It's much worse than castanets.

This post has been edited by Firon: Oct 27 2006, 22:51
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halb27
post Oct 27 2006, 23:20
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QUOTE (Firon @ Oct 27 2006, 23:50) *
... LAME handles this one poorly. ...

I'm pretty sure other mp3 encoders will have similar problems, and that's what makes it interesting for the upcoming listening tst.

This post has been edited by halb27: Oct 27 2006, 23:21


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