Following on from my ultimate op-amp shootout, which you all seemed to enjoy, here is a little teaser for light relief. There is no right and wrong and answer, just have a listen to each clip and say which you prefer and why.
There are just two files, Ruby and Opal, each plays for around 80 seconds. These are the original files.
https://www.dropbox.com/s/b216mtjkm621bka/Ruby.wav
https://www.dropbox.com/s/19yx47avl9pfzku/Opal.wav
Edit The following is a level matched file kindly provided by Pavel (PMA) for Opal. The full link reads Opal@Ruby so don't worry seeing ruby in the link.
https://www.dropbox.com/s/gtvr9nhpsudgke5/Opal@Ruby.wav
There are just two files, Ruby and Opal, each plays for around 80 seconds. These are the original files.
https://www.dropbox.com/s/b216mtjkm621bka/Ruby.wav
https://www.dropbox.com/s/19yx47avl9pfzku/Opal.wav
Edit The following is a level matched file kindly provided by Pavel (PMA) for Opal. The full link reads Opal@Ruby so don't worry seeing ruby in the link.
https://www.dropbox.com/s/gtvr9nhpsudgke5/Opal@Ruby.wav
Hi Mooly,
good test
Here is my A-B-X result. Hope I am not asked to repeat it 16 times, it would be 100% then as well
foo_abx 1.3.4 report
foobar2000 v1.1.6
2013/11/19 13:05:10
File A: C:\Documents and Settings\Administrator\Dokumenty\Hudba\Ruby.wav
File B: C:\Documents and Settings\Administrator\Dokumenty\Hudba\Opal.wav
13:05:10 : Test started.
13:06:19 : 01/01 50.0%
13:06:48 : 02/02 25.0%
13:07:22 : 03/03 12.5%
13:07:57 : 04/04 6.3%
13:08:30 : 05/05 3.1%
13:09:03 : 06/06 1.6%
13:09:31 : Test finished.
----------
Total: 6/6 (1.6%)
P.S.: you must have a FM radio near when you are recording?
I have not voted which file I do prefer, I have just performed the strictly scientific A-B-X test
good test
Here is my A-B-X result. Hope I am not asked to repeat it 16 times, it would be 100% then as well
foo_abx 1.3.4 report
foobar2000 v1.1.6
2013/11/19 13:05:10
File A: C:\Documents and Settings\Administrator\Dokumenty\Hudba\Ruby.wav
File B: C:\Documents and Settings\Administrator\Dokumenty\Hudba\Opal.wav
13:05:10 : Test started.
13:06:19 : 01/01 50.0%
13:06:48 : 02/02 25.0%
13:07:22 : 03/03 12.5%
13:07:57 : 04/04 6.3%
13:08:30 : 05/05 3.1%
13:09:03 : 06/06 1.6%
13:09:31 : Test finished.
----------
Total: 6/6 (1.6%)
P.S.: you must have a FM radio near when you are recording?
I have not voted which file I do prefer, I have just performed the strictly scientific A-B-X test
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Last edited:
Richard,
I need your help here. I have no preference between these 2 files, but I have 100% success in ABX and I am sure I would have it even if ABX was repeated 20 times (boring and tiring, then). What does it mean, how do you translate the result? Like, YES, there is a difference? OK. But how much helpful is such information?
I need your help here. I have no preference between these 2 files, but I have 100% success in ABX and I am sure I would have it even if ABX was repeated 20 times (boring and tiring, then). What does it mean, how do you translate the result? Like, YES, there is a difference? OK. But how much helpful is such information?
Hi Mooly,
good test ............
Thanks
There was no FM radio or anything like that nearby (or even not nearby. I figured that this one might evade software analysis
Yes, I have made a software analysis AFTER I have finished my ABX test. I was curious what makes such a huge sound difference (I was really surprised how big the sound difference was). So I have made an analysis, but I am saying nothing else than that I found 19kHz pilot. 19kHz or 15.625kHz is quite usual and it indicates that immunity against RFI is not perfect. Unfortunately, you will find it at studio recordings as well and then, in studio record, it is IMO unacceptable.
I am not revealing more
I am not revealing more
Last edited:
Yes, I have made a software analysis AFTER I have finished my ABX test. I was curious what makes such a huge sound difference (I was really surprised how big the sound difference was). So I have made an analysis, but I am saying nothing else than that I found 19kHz pilot. 19kHz or 15.625kHz is quite usual and it indicates that immunity against RFI is not perfect. Unfortunately, you will find it at studio recordings as well and then, in studio record, it is IMO unacceptable.
I am not revealing more
I'm not au fait with software analysis but I can well believe it shows as a huge difference. I'm no stranger to 15625hz line frequency (tv repair background).
Quote "I am not revealing more Go on, you know you want to
I could provide you with a level matched file, if you are interested.
Thank you. Yes that would be great I'll add a note to the top of the thread.
This is a perfectly valid & important result.I have no preference between these 2 files, but I have 100% success in ABX and I am sure I would have it even if ABX was repeated 20 times (boring and tiring, then). What does it mean, how do you translate the result? Like, YES, there is a difference? OK. But how much helpful is such information?
I have often had this from my true golden pinnae. The actual comments are usually valuable here.
The results to ignore are Chalk & Cheese comments from deaf Golden Pinnae that are inconsistent & unreliable.
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