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An experiment in lossy vs lossless A/B testing - Page 4

post #46 of 51
Well I was wrong. The two nearly identical in my tests and while I could tell one from the other with slightly more regularity than random guessing, I chose the lower quality as the better. That's enough to convince me that flac isn't really necessary
post #47 of 51
Thread Starter 

Hey guys. Sorry, I haven't had much time to do more testing with these files. I'd like to try to keep this thread going in the future though. Chewy, if at some point I sent you a song in lossless would you be willing to convert it into the two files for the test? I think there are better song choices that would lend themselves better to this kind of test. And I don't think it would hurt to keep testing and encouraging more people to take part.

post #48 of 51
Quote:
Originally Posted by devhen View Post

Hey guys. Sorry, I haven't had much time to do more testing with these files. I'd like to try to keep this thread going in the future though. Chewy, if at some point I sent you a song in lossless would you be willing to convert it into the two files for the test? I think there are better song choices that would lend themselves better to this kind of test. And I don't think it would hurt to keep testing and encouraging more people to take part.

Yeah I could do that. I chose this particular song because something from this album was requested. Everyone's got a different opinion on what is a better type of file for testing. In reality it's just stuff with loads of complex high frequency content.

 

There are also a few other files I have already posted in the links of my signature. The top one includes an all acoustic bluegrass song as well as a song with just acoustic guitar(top and bottom songs). The bottom link doesn't have the source file posted atm(EDIT: now it is) but it contains both acoustic stuff, electronic stuff, and a good deal of high frequency content. I'll post the source later so people can compare that as well(the purpose of the topic is to compare lossy versus transcoded lossy though).


Edited by chewy4 - 2/27/13 at 4:20pm
post #49 of 51
Thanks OP for providing these files. I registered to tell you guys that I recognized the lossless file. It took a pair of ca. 400 EUR expensive IEMs. There's no chance that I would've recognized it with my old headphones or any other piece of audio equipment I have. The telling part for me was in the middle: the "roll-off" of the drums and the cymbals. I had to put the two files in loop for a while and concentrate. But the difference is so subtle: you need top notch audio equipment to hear it and even then you wouldn't notice it if you listen casually.
post #50 of 51

Did you ABX them? If not, do it, it's easy when once we know the difference.

post #51 of 51

here are mine:

 

 

foo_abx 1.3.4 report
foobar2000 v1.2.4
2013/06/08 18:06:36

File A: C:\adams ****\music\electronic\Downtempo, Other\Hol Braumann\Hol Braumann - Human\flac\01 - Hours.flac
File B: C:\adams ****\music\electronic\Downtempo, Other\Hol Braumann\Hol Braumann - Human\mp3\01 - Hours.mp3

18:06:36 : Test started.
18:07:16 : 01/01 50.0%
18:08:00 : 01/02 75.0%
18:08:22 : 02/03 50.0%
18:08:55 : 03/04 31.3%
18:09:27 : 03/05 50.0%
18:09:59 : 03/06 65.6%
18:10:20 : 03/07 77.3%
18:10:45 : 03/08 85.5%
18:11:18 : 04/09 74.6%
18:11:52 : 05/10 62.3%
18:12:20 : 06/11 50.0%
18:12:49 : 07/12 38.7%
18:13:20 : 08/13 29.1%
18:13:41 : 08/14 39.5%
18:14:09 : 09/15 30.4%
18:14:20 : Test finished.

----------
Total: 9/15 (30.4%)

 

 

foo_abx 1.3.4 report
foobar2000 v1.2.4
2013/06/08 18:26:43

File A: C:\adams ****\music\electronic\Downtempo, Other\Kryptic Minds - Cant Sleep - 2011\Flac\06 Can't Sleep (Feat. Alys Be).flac
File B: C:\adams ****\music\electronic\Downtempo, Other\Kryptic Minds - Cant Sleep - 2011\mp3\06 Can't Sleep (Feat. Alys Be).mp3

18:26:43 : Test started.
18:27:49 : 00/01 100.0%
18:28:28 : 01/02 75.0%
18:29:06 : 02/03 50.0%
18:29:46 : 02/04 68.8%
18:30:08 : 03/05 50.0%
18:30:29 : 03/06 65.6%
18:31:09 : 03/07 77.3%
18:31:39 : 03/08 85.5%
18:32:08 : 03/09 91.0%
18:32:23 : 03/10 94.5%
18:33:10 : 04/11 88.7%
18:33:35 : 04/12 92.7%
18:33:59 : 05/13 86.7%
18:34:19 : 05/14 91.0%
18:34:41 : 05/15 94.1%
18:34:44 : Test finished.

----------
Total: 5/15 (94.1%)

 

 

 

foo_abx 1.3.4 report
foobar2000 v1.2.4
2013/06/08 18:18:01

File A: C:\adams ****\music\electronic\Downtempo, Other\Solar Fields\2012 - Random Friday\flac\05 - Daydreaming.flac
File B: C:\adams ****\music\electronic\Downtempo, Other\Solar Fields\2012 - Random Friday\mp3\05 - Daydreaming.mp3

18:18:01 : Test started.
18:18:50 : 00/01 100.0%
18:19:15 : 01/02 75.0%
18:19:54 : 01/03 87.5%
18:20:23 : 02/04 68.8%
18:21:08 : 02/05 81.3%
18:21:28 : 03/06 65.6%
18:21:55 : 03/07 77.3%
18:22:33 : 04/08 63.7%
18:22:46 : 05/09 50.0%
18:23:20 : 05/10 62.3%
18:23:39 : 05/11 72.6%
18:24:16 : 06/12 61.3%
18:24:38 : 07/13 50.0%
18:25:06 : 07/14 60.5%
18:25:27 : 07/15 69.6%
18:25:31 : Test finished.

----------
Total: 7/15 (69.6%)

 

 

i wasnt expecting otherwise... it was pretty obvious to me that i wouldnt be able to tell a difference. just listening to the A\B, even before making guesses was enough to show me that i couldnt differentiate the two files.

i do intend on doing some more tests with the new boards of canada cd though. im not expecting anything different, i just want to try abxing with music with high dynamic range

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