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Comparing August and February Nero AAC Encoder release
muaddib
post Mar 3 2008, 17:26
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There were some complaints from user on HA about August version of Nero AAC encoder quality compared to February 2007 release.
But there were not much samples provided to back this up. Namely only guruboolez provided one sample. guruboolez is unfortunately not available since beginning of this year.
Can you please help us providing more examples where it is easily noticeable that February version produces worse results than the August one. Also please point me to any thread that I missed where such sample was provided.
Please provide very short samples (5-15 seconds) where the problem is evident, together with parameters used for encoding.
This information is needed to improve next release of Nero AAC encoder, so if you are interested in improving the quality please help us.
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muaddib
post Mar 26 2008, 12:54
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bibilolo sample

Original can be downloaded from http://www.mp3-tech.org/tests/aac_48/samples/sample3.zip
(There is original in flac and some compressed formats inside zip)

Here is the sample encoded at 96kbps:
February version: Attached File  bibilolo__1.0.7_.mp4 ( 350.19K ) Number of downloads: 275
August version: Attached File  bibilolo__1.1.34_.mp4 ( 346.29K ) Number of downloads: 270
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Alexxander
post Mar 26 2008, 15:49
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QUOTE (muaddib @ Mar 26 2008, 12:54) *
bibilolo sample

Original can be downloaded from http://www.mp3-tech.org/tests/aac_48/samples/sample3.zip
(There is original in flac and some compressed formats inside zip)

Here is the sample encoded at 96kbps:
February version: Attached File  bibilolo__1.0.7_.mp4 ( 350.19K ) Number of downloads: 275
August version: Attached File  bibilolo__1.1.34_.mp4 ( 346.29K ) Number of downloads: 270

I've ABX'ed both mp4 against flac with Sennheiser headphone, cheap Sony amp and analogue out of onboard ADI1988B soundchip. If one listens to a small sound fading in at around 5.9-6.0 sec ABXing is very easy. I had really no problem matching samples so I quitted after 5 and 6 times. But I can say that v1.1.34 does the job much better than v1.0.7 (less distortion of that specific upcoming sound at around 5.9 sec).

CODE
foo_abx 1.3.1 report
foobar2000 v0.9.5.1
2008/03/26 15:25:10

File A: C:\Documents and Settings\Alexxander\Escritorio\bibilolo.flac
File B: C:\Documents and Settings\Alexxander\Escritorio\bibilolo__1.0.7_.mp4

15:25:10 : Test started.
15:25:47 : 01/01  50.0%
15:25:54 : 02/02  25.0%
15:26:00 : 03/03  12.5%
15:26:06 : 04/04  6.3%
15:26:14 : 05/05  3.1%
15:26:17 : Test finished.

----------
Total: 5/5 (3.1%)


CODE
foo_abx 1.3.1 report
foobar2000 v0.9.5.1
2008/03/26 15:26:46

File A: C:\Documents and Settings\Alexxander\Escritorio\bibilolo.flac
File B: C:\Documents and Settings\Alexxander\Escritorio\bibilolo__1.1.34_.mp4

15:26:46 : Test started.
15:27:08 : 01/01  50.0%
15:27:23 : 02/02  25.0%
15:27:30 : 03/03  12.5%
15:27:51 : 04/04  6.3%
15:28:02 : 05/05  3.1%
15:28:15 : 06/06  1.6%
15:28:16 : Test finished.

----------
Total: 6/6 (1.6%)
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