Mark02131:
There is not a shred of "scientific" evidence that says any such thing
Not the DBT itself, but in regard to our sonic memory. But why hypothesize about it? Try it yourself as I proposed with a boombox and your $$$$ system.
I've been a participant in one well-conducted DBT and I've talked with the person which ran the test. He has quite a bit of experience and scientific background in audible perceptions and I believe his word is quite credible when he tells me that there is enough scientific data on the subject to show that statisticaly most participants are just guessing.
I'm interested in any other data do you have that supports other conclusions.