jkeny wrote: > If the test is inherently skewed towards producing null results unless > very carefully administered by professionals with expertise in the area > of perceptual testing, then repeating it ad-nauseum will not make any > difference - you will consistently get null results
For an example of a test that is highly skewed towards producing null results, let's take the classic casual sighted audiophile evaluation: (1) There is no immediate fixed reference, so all results are essentially junk whether the listener realizes it or not. Obvious bias towards null or random results. (2) Levels aren't matched so the mismatched levels wash out the ability to reliably perceive small differences. Obvious bias towards null or random results. (3) Changeovers are excruciatingly slow, so people forget what the equipment being compared actually sounds like. Obvious bias towards null or random results. (4) The music being listened to is constantly changing, and is often the largest source of perceived differences. Obvious bias towards null or random results. (5) If we weren't telling the listener constantly what he is actually listening to, he'd notice that based on sound, he has not a clue. Obvious bias towards null or random results. ------------------------------------------------------------------------ arnyk's Profile: http://forums.slimdevices.com/member.php?userid=64365 View this thread: http://forums.slimdevices.com/showthread.php?t=103842 _______________________________________________ audiophiles mailing list audiophiles@lists.slimdevices.com http://lists.slimdevices.com/mailman/listinfo/audiophiles
