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Blind Test 2

post #1 of 57
Thread Starter 

I am going to treat this one a bit different.  Instead of giving away what the two different file types are, I want you guys to say which one is the higher quality.  Like my previous test, different flac compression level is used for each to cover up the file type.  This results in slightly different file sizes.

 

Track is Pink Floyd - Mother

 

http://www.fileden.com/files/2008/2/16/1763003/Pink_A.flac

 

http://www.fileden.com/files/2008/2/16/1763003/Pink_B.flac

post #2 of 57

Can't hear a difference but I'll try some more tomorrow.

post #3 of 57

I fail to hear a real difference although at very first listening, i thought A is a better one.

post #4 of 57

Not quite as obvious, but still pretty easy to tell.

 

 

Warning: Spoiler! (Click to show)

B is the higher res. file.

post #5 of 57

B is the higher quality.  Just listen to the space around the vocals.


Edited by IPodPJ - 10/23/10 at 1:34pm
post #6 of 57

 


I got 7/9 abx score, the cymbals are darker one one of them.I guess it's b, higher quality, does the foobar abx comparator pick first file as a and second as b, or random. Still think it's b, but i am tired and can hardly tell.

post #7 of 57
Quote:
Originally Posted by silverxxx View Post


I got 7/9 abx score, the cymbals are darker one one of them.I guess it's b, higher quality, does the foobar abx comparator pick first file as a and second as b, or random. Still think it's b, but i am tired and can hardly tell.


Should be random for each trial.

 

se

 

 

post #8 of 57
Quote:
Originally Posted by silverxxx View Post


 

I got 7/9 abx score, the cymbals are darker one one of them.I guess it's b, higher quality, does the foobar abx comparator pick first file as a and second as b, or random. Still think it's b, but i am tired and can hardly tell.





 

Quote:
Originally Posted by Steve Eddy View Post


Should be random for each trial.

 

se

 

It only randomises X - A and B are static once allocated - you can view the text file it creates, so far in my tests first in list is always A - I just got 7/9 always guessing A = X and not even listening to the tracks - I have noticed this before with FooBar - once I ran it up to 20 trails it evened out a lot but even then it was only showing me as 74% probability of guessing - I  would suggest 20 trials as a minimum to overcome this.

 

 

post #9 of 57
Quote:
Originally Posted by nick_charles View Post

 

It only randomises X - A and B are static once allocated - you can view the text file it creates, so far in my tests first in list is always A - I just got 7/9 always guessing A = X and not even listening to the tracks - I have noticed this before with FooBar - once I ran it up to 20 trails it evened out a lot but even then it was only showing me as 74% probability of guessing - I  would suggest 20 trials as a minimum to overcome this.


Thanks for the answer, i know the probabilities of seven out of nine, but i got tired and started to second guess everything. I did hear the difference between them. If i had to guess in an abx test without consciously hearing a difference i would have to consider the tracks identical. Also forgot about the text file, this is basically the second time i used the plugin. I too thought the guessing probability is wrong. At 7/9 the guessing probability was 12%. That sounds lower than it should be.


Edited by silverxxx - 10/24/10 at 4:08pm
post #10 of 57
Quote:
Originally Posted by silverxxx View Post




Thanks for the answer, i know the probabilities of seven out of nine, but i got tired and started to second guess everything. I did hear the difference between them. If i had to guess in an abx test without consciously hearing a difference i would have to consider the tracks identical. Also forgot about the text file, this is basically the second time i used the plugin. I too thought the guessing probability is wrong. At 7/9 the guessing probability was 12%. That sounds lower than it should be.


Wavoman would know the answer to the probability calculation.
 

post #11 of 57

I couldn't hear a difference really. I'll try again in a bit though. I know I can tell the difference between 160 and FLAC on most files, and I can mostly tell 192 from FLAC. I suspect this is higher bitrate. It's really tough.


Edited by revolink24 - 10/24/10 at 4:45pm
post #12 of 57

I have no clue which one is lossless. I scored 0/2 and read PJ's comments about the vocals, which was then the focus of my foobar ABX session. I then scored 6/6 on the following attempts. Despite these results, I doubt I could repeat them and I could care less which copy I owned for casual listening.

post #13 of 57

Cannot hear a difference.

post #14 of 57

This thread hasn't had nearly the activity of the first - probably because most of us can't tell a difference. When are you gonna spill the beans about the difference between the files?

post #15 of 57

Can't tell much of a difference either, but B sounds a little better.

 

BTW- 100th Post!!!!!!!!!!!!!!!!!

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