This is how I feel about ABX tests and their methodology: Let's take two different drawings (you know, the old "10 differences" quizz^^). Lets say now they have 100 small differences. It's the "find the 100 differences" game.
Then, we take several people, and we let them observe the two pictures (A and B) along with a third one (X) which is a copy of one of them. Then, we cut a small piece of each picture (say 1 billionth of it) and we ask each time to try to determine whether the piece of the X picture is the same as the part of the A or the part of the B one. If they can't determine whether this small part of X is for sure part of the A or B, and if the panel of the observers is large enough, then we can conclude that the A and B pictures are the same and can't be distinguished. The only problem, is that they actually ARE different, and that some people can actually distinguish some of the differences. So, the methodology is broken, since it leads to a faulty conclusion. Easy. -- Themis SB3 - North Star dac 192 - Denon 3808 - Sonus Faber Grand Piano Domus ------------------------------------------------------------------------ Themis's Profile: http://forums.slimdevices.com/member.php?userid=14700 View this thread: http://forums.slimdevices.com/showthread.php?t=56425 _______________________________________________ audiophiles mailing list [email protected] http://lists.slimdevices.com/lists/listinfo/audiophiles
