Originally Posted by Bob Lee (QSC)
They are no more insensitive to subtle sonic differences than sighted tests are. They are, however, amazingly insensitive to imagined sonic differences, which is why they are far more valuable than sighted tests.
What's more, the performance of DBT's in threshold tests gets down to within -->||<-- of the maximum sensitivity permitted by physics.
The evidence for the sensitivity of DBT's is present and accounted for.
The evidence for the total, absolute inaccuracy of sighted testing for small differences due to the auditory sense is also present, accounted for, and overwhelming.
Originally Posted by Jon Risch
Don't be discouraged by the results, many of these kinds of listening tests are amazingly INSENSITIVE to subtle sonic differences, and the fact that you thought that you were hearing things under the sighted informal sessions before the formal session really doesn't mean much, the formal portion literally changes the way your brain works and 'analyzes' the music.
Jon, please provide me with some concrete, testable, verifiable evidence in support of that claim. It is an extraordinary claim that is directly opposite the entire experience of the credible psychoacoustics community.
In short, my experience with DBT's, is that they and cognates are the only valid kind of auditory testing in existance, that they have shown no such problem at all, of course presuming training and feedback after the decision, as well as a substantial acclimation period.
If somebody didn't find anything, and the test was well done, the overwhelmingly most likely meaning is that there was nothing to hear in the test.
There is, in science, no absolute negative proof, only a cumulative weight of evidence, and that is solidly and incontrovertably, in all cases, on the side of the properly run DBT or cognate.
It is also just as certain that sighted tests are so prone to inadvertant, honest human error, that they are, unless differences are enormous, completely unreliable for the purpose of detecting differences due only to auditory stimulii.