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Orion_II.wav with Vorbis 1.1.0 @q6

Hi all!

This is my first post and my first ABX test. I hope you find the results useful.

I ABXed Orion_II.wav against the same sample encoded with Vorbis 1.1.0 @q6

Code: [Select]
23:08:00 : Test started.
23:09:12 : 01/01  50.0%
23:09:44 : 02/02  25.0%
23:09:52 : 03/03  12.5%
23:10:11 : 04/04  6.3%
23:11:01 : 05/05  3.1%
23:11:23 : 06/06  1.6%
23:11:37 : 07/07  0.8%
23:11:58 : 08/08  0.4%
23:12:11 : 09/09  0.2%
23:12:43 : 10/10  0.1%
23:12:55 : 11/11  0.0%
23:13:23 : 12/12  0.0%
23:14:00 : 13/13  0.0%
23:14:52 : 14/14  0.0%
23:15:19 : 15/15  0.0%
23:17:20 : 15/16  0.0%
23:17:29 : Test finished.

----------
Total: 15/16 (0.0%)


There was a "smudged" kind of distortion (don't know how to describe it exactly) during the first 6 seconds. It was a bit difficult to spot.

Feel free to suggest any other samples/settings I should test.

Orion_II.wav with Vorbis 1.1.0 @q6

Reply #1
Thank you for your valuable tests.  I was wondering whether you can perform the same test using my recent experimental version of Vorbis that sports a new assistive block switching algorithm that may reduce the smearing:

http://rarewares.org/quantumknot/oggenc-qktune20050227.exe

Many thanks

Orion_II.wav with Vorbis 1.1.0 @q6

Reply #2
Ok, here are the results of Orion_II.wav vs your version of the encoder at q6:

Code: [Select]
foo_abx v1.2 report
foobar2000 v0.8.3
2005/02/27 16:09:50

File A: file://C:\Audio Installation\samples\Orion_II.wav
File B: file://C:\Documents and Settings\X\Επιφάνεια εργασίας\Vorbis tuned\001 Orion_II_gk.ogg

16:09:50 : Test started.
16:10:48 : 01/01  50.0%
16:11:36 : 02/02  25.0%
16:11:44 : 03/03  12.5%
16:11:57 : 04/04  6.3%
16:12:09 : 05/05  3.1%
16:12:15 : 06/06  1.6%
16:12:21 : 07/07  0.8%
16:12:48 : 08/08  0.4%
16:12:54 : 09/09  0.2%
16:13:00 : 10/10  0.1%
16:13:11 : 11/11  0.0%
16:13:18 : 12/12  0.0%
16:13:23 : 13/13  0.0%
16:13:33 : 14/14  0.0%
16:13:39 : 15/15  0.0%
16:13:46 : 16/16  0.0%
16:13:52 : 17/17  0.0%
16:14:09 : 18/18  0.0%
16:14:15 : 19/19  0.0%
16:14:20 : 20/20  0.0%
16:14:27 : 21/21  0.0%
16:14:33 : 22/22  0.0%
16:14:45 : Test finished.

----------
Total: 22/22 (0.0%)


The same smearing was there.

Then I tested Vorbis 1.1.0 at q6 against your version at q6:

Code: [Select]
foo_abx v1.2 report
foobar2000 v0.8.3
2005/02/27 16:16:22

File A: file://C:\Documents and Settings\X\Επιφάνεια εργασίας\Vorbis 110\001 Orion_II_110.ogg
File B: file://C:\Documents and Settings\X\Επιφάνεια εργασίας\Vorbis tuned\001 Orion_II_gk.ogg

16:16:23 : Test started.
16:18:06 : 01/01  50.0%
16:18:35 : 02/02  25.0%
16:19:12 : 03/03  12.5%
16:19:59 : 04/04  6.3%
16:20:05 : 04/05  18.8%
16:20:15 : 05/06  10.9%
16:21:03 : 05/07  22.7%
16:21:57 : 05/08  36.3%
16:22:33 : 06/09  25.4%
16:23:14 : 06/10  37.7%
16:23:23 : 06/11  50.0%
16:23:50 : 06/12  61.3%
16:23:58 : 07/13  50.0%
16:28:14 : 08/14  39.5%
16:28:21 : 09/15  30.4%
16:28:28 : 10/16  22.7%
16:28:39 : 11/17  16.6%
16:28:53 : 12/18  11.9%
16:30:01 : 13/19  8.4%
16:30:45 : 13/20  13.2%
16:30:55 : 14/21  9.5%
16:31:00 : 14/22  14.3%
16:31:08 : 15/23  10.5%
16:31:28 : 16/24  7.6%
16:31:41 : 16/25  11.5%
16:31:52 : 16/26  16.3%
16:32:01 : 16/27  22.1%
16:32:05 : Test finished.

----------
Total: 16/27 (22.1%)


I noticed no difference in smearing at all.

At about trial 11, I concentrated between seconds 4-6. I was given the impression that 1.1.0 produced a fuller sound in that part of the sample, but after 2-3 trials that impression dissipated and I couldn't tell any difference between the two samples.

Hope this helps!

Orion_II.wav with Vorbis 1.1.0 @q6

Reply #3
Ah, so it may not be a block switching problem then.  Many thanks.

 
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