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AAC vs. MP3 tests @128 - Test #1
JohnV
post Sep 25 2001, 18:33
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Hey Ivan, just started doing your AAC vs. MP3 @128 Test #1. For those who dont know, below is the test announcement. But, anyway, it seems that 16 samples to evaluate (12 different) is a bit too much even for me to evaluate "correctly".. smile.gif
Are you really going to include this many samples in test #2 also and 30sec samples?
How many results you have got so far?
Just did the first part of the test, second one to go...

QUOTE
Ivan Dimkovic wrote:[b]
Hi All

Ok, WavRate is almost finished, only thing that needs to be done is multiple test analysis (but project file is already compatible with that).

What's new:

- Better look&feel  Small glitches corrected, like playback info
- Automatic randomization of the items prior to testing
- Slider selection of the range of playback
- Automatic encryption of the output files (security purposes)

You can download wavrate from:

http://www.psytel-research.co.yu/downloads/wavrate.exe

Ok, so first test iteration will be castanets test:

http://www.audiocoding.com/listening_tests...tanets_test.zip

Codec info for the Test #1 could be found here:

http://www.psytel-research.co.yu/downlods/...s_codecinfo.zip

This zip file is enrypted - I will supply everyone with the password when listening test #1 is finished.


Please unpack those LPAC files into the same directory and open those .wrf files from the wavrate.  You can rank each codec with mark ranging from 1 (bad) to 5 (excellent) in 0.1 increments.

Please perform those tests carefully, and comment your results for each item as much as you can - tell me what do you think what's wrong with particular test item and why you think it deserves particular mark.

Please send saved results (File/Save...) to:  listening_tests@psytel-research.co.yu  - subject "Castanets Test"

Next test will incorporate larger sample (30 seconds)


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Juha Laaksonheimo
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Posts in this topic
- JohnV   AAC vs. MP3 tests @128 - Test #1   Sep 25 2001, 18:33
- - Ivan Dimkovic   Maybe I will reduce number of codecs to 6, with hi...   Sep 25 2001, 18:38
- - JohnV   Hmm, pretty long way to go until 30 people has don...   Sep 25 2001, 19:11
- - Ivan Dimkovic   As soon as I figure out what went wrong with the e...   Sep 26 2001, 07:53
- - TrNSZ   Have you looked into using pgplib? It's portable ...   Sep 26 2001, 09:37
- - Ivan Dimkovic   I'll take a look at pgplib - actually, I used MD5 ...   Sep 26 2001, 11:50
- - ff123   Well, I peered into the test a bit (after I took i...   Sep 26 2001, 17:31
- - Ivan Dimkovic   Hmm... deviations between listeners are quite big....   Sep 26 2001, 22:52
- - ff123   QUOTE Hmm... deviations between listeners are quit...   Sep 26 2001, 23:14
- - YouriP   I downloaded wavrate and tried the listening test,...   Sep 26 2001, 23:37
- - ff123   You have to unpac the files first. At least this ...   Sep 27 2001, 03:45
- - YouriP   Yup, you are correct ff123. It seems to work fine ...   Sep 28 2001, 17:22
- - JohnV   Ok, I submitted my results also. Well, in the end ...   Sep 28 2001, 17:35
- - Garf   Nice utilty. I had to figure out I had to decompre...   Sep 29 2001, 23:38
- - ff123   Ivan, How is the test coming along? ff123   Oct 8 2001, 08:08
- - Ivan Dimkovic   Ok, castanets test is over and it seems that FhG A...   Oct 9 2001, 09:51
- - Ivan Dimkovic   ...CASTANETS 128 TEST... FRIEDMAN version 1.10 (S...   Oct 9 2001, 21:13
- - ff123   Too bad only nine listeners. Which wav files corr...   Oct 9 2001, 21:47
- - Ivan Dimkovic   Ah.. yes... 5006933F-DCCD-4c82-A7EF-E9E9BE22A78D ...   Oct 9 2001, 22:00
- - layer3maniac   QUOTE Critical significance of Fisher's LSD analys...   Oct 9 2001, 22:16
- - Dibrom   QUOTE Originally posted by ff123 Hmmm.  How ...   Oct 10 2001, 12:08
- - jianxin yan   hi, ivan when do you want to end the test? now, ...   Oct 10 2001, 16:48


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