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Nero AAC, listening test :-)
Ivan Dimkovic
post Nov 27 2002, 13:19
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Nero MPEG4 developer


Group: Developer
Posts: 1466
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Member No.: 8



Hi, - before releasing final version I would like to hear audiophiles opinion about two noise allocation strategies we can use.

These two versions will be called "build_a" and "build_b"

I've packed some of the essential "codec killers" samples in build_a.zip and build_b.zip - originals could be easily found on hydrogenaduio and mp3dev smile.gif

http://www.psytel-research.co.yu/test/

BUILD A:

http://www.psytel-research.co.yu/test/build_a.zip


BUILD B:

http://www.psytel-research.co.yu/test/build_b.zip


Which one is better, and for which samples? smile.gif

Files are CBR - 80, 96 and 128 kbps - 32 and 44.1 kHz sampling rate - ADIF AAC format

This post has been edited by Ivan Dimkovic: Nov 27 2002, 13:21
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ff123
post Jun 4 2003, 05:22
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ABC/HR developer, ff123.net admin


Group: Developer (Donating)
Posts: 1396
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roberto,

I got your file.

I verified that when I loaded up the five samples, and then added the original as the 6th sample, it worked (or rather it didn't work) just like you said.

Then I made all of the samples the original, and that worked properly. I think I remember that I check the WAV properties of each file prior to each test. That is, I need to know which file will end last, so that I can play this file all the way to the end instead of cutting it off short.

The bottom line is that this behavior is still caused by an WAV file that is different somehow from the typical WAV file.

I opened atrain_1.wav in Cool Edit, and then saved it as a new WAV file, atrain_1a.wav. The old file causes problems, but the new one doesn't. A binary file comparison (using the DOS command "fc") yields the following differences:

Comparing files ATrain_1.wav and ATRAIN_1A.WAV
0000001C: 90 10
0000001D: C0 B1
0000001E: CD 02

I'll look this up to see what the difference is.

ff123
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Posts in this topic
- Ivan Dimkovic   Nero AAC, listening test :-)   Nov 27 2002, 13:19
- - Dibrom   I moved the thread to the news section.. it'll...   Nov 27 2002, 15:23
- - Dibrom   Result So Far: Castanets - 44.1khz@128kbps - Buil...   Nov 27 2002, 15:33
- - SK1   OH YEAH! OK, starting to test. This thread wil...   Nov 27 2002, 17:57
- - guruboolez   иии gURuBoOleZZ results (work in progress) иии I...   Nov 27 2002, 18:40
- - SK1   Forget ABXing, what's the use?? It's not l...   Nov 27 2002, 19:07
- - guruboolez   QUOTE (SK1 @ Nov 27 2002 - 07:07 PM)Forget AB...   Nov 27 2002, 19:13
- - SK1   Fair enough ...   Nov 27 2002, 19:14
- - Mac   I wish I could help more, I don't have the ear...   Nov 28 2002, 11:55
- - JohnV   What bothers me is the NIN-becoming sample and its...   Nov 28 2002, 13:08
- - Mac   I noticed the start of the NIN sample was horrible...   Nov 28 2002, 16:15
- - wildboar   The beginning of the NIN clip should have a consta...   Nov 28 2002, 18:45
- - JohnV   QUOTE (Mac @ Nov 28 2002 - 05:15 PM)I noticed...   Nov 28 2002, 22:21
- - smok3   44 khz/128 kbit: ----------- velvet_44khz_128_aac...   Dec 1 2002, 03:45
- - JohnV   As Ivan said, all the originals can be found in th...   Dec 1 2002, 04:19
- - smok3   tnx johnV i found most, which one is 41_30s ? (thi...   Dec 1 2002, 04:32
- - JohnV   QUOTE (smok3 @ Dec 1 2002 - 05:32 AM)tnx john...   Dec 1 2002, 07:58
- - Ivan Dimkovic   Ok, attack issues with NIN_becoming.wav should be...   Dec 10 2002, 15:42
- - Phobos   OHH BOY, THOSE NEW SAMPLES ARE MAD!!! ...   Dec 10 2002, 20:14
- - guruboolez   It's hard to find a difference between 2.30 sa...   Dec 10 2002, 20:57
- - Ivan Dimkovic   There is a big difference, at least with NIN_beco...   Dec 10 2002, 21:32
- - guruboolez   I will try. I tried again velved, properly decoded...   Dec 10 2002, 21:43
- - guruboolez   Confirmed. (I'm not dreaming : there is no NIN...   Dec 10 2002, 23:13
- - menno   QUOTE (guruboolez @ Dec 10 2002 - 09:43 PM)Th...   Dec 10 2002, 23:15
- - guruboolez   I downloaded this file : http://www.inf.ufpr.br/~...   Dec 10 2002, 23:27
- - menno   Yes, everything is affected. I'll make sure Ro...   Dec 10 2002, 23:32
- - guruboolez   Thanks. I used CoolEdit for one practical reason. ...   Dec 10 2002, 23:56
- - menno   Ok, new CoolEdit filter is now available from Rare...   Dec 11 2002, 09:30
- - ak   QUOTE (menno @ Dec 11 2002 - 10:30 AM)I also ...   Dec 11 2002, 10:16
- - guruboolez   Thanks, it works fine now. Glad to see that I...   Dec 11 2002, 14:03
- - ff123   QUOTE (guruboolez @ Dec 11 2002 - 05:03 AM)Th...   Dec 11 2002, 16:45
- - rjamorim   I'm going through a similar problem here. Only...   Jun 3 2003, 01:42
- - ff123   rjamorim, Regarding your recent inquiry (2 June 0...   Jun 3 2003, 15:40
- - rjamorim   I did another test. This time, I used another sam...   Jun 3 2003, 21:44
- - ff123   QUOTE (rjamorim @ Jun 3 2003 - 12:44 PM)I did...   Jun 3 2003, 22:04
- - rjamorim   QUOTE (ff123 @ Jun 3 2003 - 06:04 PM)P.S., if...   Jun 3 2003, 22:16
- - ff123   roberto, I got your file. I verified that when I...   Jun 4 2003, 05:22
- - rjamorim   Great news, ff123. Thanks a lot for taking a look ...   Jun 4 2003, 05:37
- - ff123   QUOTE (rjamorim @ Jun 3 2003 - 08:37 PM)Great...   Jun 4 2003, 05:52
- - ff123   BTW, it looks like that field is redundant, and th...   Jun 4 2003, 06:00
- - rjamorim   QUOTE (ff123 @ Jun 4 2003 - 01:52 AM)The prob...   Jun 4 2003, 06:08
- - menno   Hello ff123, Yes FAAD2 used to have a little bug ...   Jun 4 2003, 09:55
- - rjamorim   QUOTE (menno @ Jun 4 2003 - 05:55 AM)But of c...   Jun 4 2003, 18:21
- - ff123   QUOTE (rjamorim @ Jun 4 2003 - 09:21 AM)If th...   Jun 4 2003, 19:23
- - rjamorim   QUOTE (ff123 @ Jun 4 2003 - 03:23 PM)What...   Jun 4 2003, 19:47
- - ff123   Cool. How many samples are you going to try? Sou...   Jun 4 2003, 20:16
- - rjamorim   QUOTE (ff123 @ Jun 4 2003 - 04:16 PM)Cool....   Jun 4 2003, 20:31
- - Tripwire   If you take WMA9, be sure to use both Std and Pro.   Jun 4 2003, 21:33
- - rjamorim   QUOTE (Tripwire @ Jun 4 2003 - 05:33 PM)If yo...   Jun 4 2003, 21:39
- - spoon   How do Codecs with VBR fit in with 128Kbps? to be ...   Jun 4 2003, 22:25
- - rjamorim   QUOTE (spoon @ Jun 4 2003 - 06:25 PM)How do C...   Jun 4 2003, 22:33
- - guruboolez   QUOTE (rjamorim @ Jun 4 2003 - 09:39 PM)QUOTE...   Jun 4 2003, 22:41
- - rjamorim   QUOTE (guruboolez @ Jun 4 2003 - 06:41 PM)The...   Jun 4 2003, 22:52
- - spoon   The profile options for WMApro are 2 channel only ...   Jun 4 2003, 23:04
- - ff123   QUOTE (rjamorim @ Jun 4 2003 - 01:52 PM)QUOTE...   Jun 4 2003, 23:13


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