Wrong section of the forum mate. Also generally speaking not all scientific papers are of the highest quality, so it's good to critically evaluate if findings are statistically significant or recognize study design flaws or biases. All good an fun to keep linking and quoting studies but unless it's a meta analysis I wouldn't put too much weight behind these individual papers.
Statistics. I love statistics.
You can find on the net (the ones I linked, and the ones the links link themselves, are only a small part of it) a lot of scientifically conducted (as is, again, real people, no agenda, some basic knowledge of physical processes and theory of measure) studies which shows the inability of the human ear to pick apart signals when the delta is under a given range.
I would say a statistically significant number.
Can you point me to a single, scientifically conducted study, where scientists and audiophiles got together, and verified that human hearing can indeed take apart audio signals which differ, say, less than 1e-3 (or even 1e-2, FWIW)?
Like the previous poster said... this is the micro iDSD thread.
Please take it somewhere else: http://www.head-fi.org/f/133/sound-science