That is an old and well known trick, honest folks do not do this...

--
Best Regards,

Lou
"Nousaine" wrote in message
news:3CQpb.78911$ao4.220789@attbi_s51...
(Michael Scarpitti) wrote:

(Mkuller) wrote in message
...
mkuller wrote:
Ah, the flawed amatuer dbt you hold so dear. So the gentleman may
proceed,
please suggest a program for him to use which has proven sensitive
enough
for
him to be able to identify these differences under blind conditions.


Steven Sullivan wrote:
Not necessary. He has already identified programs that make it
identifiable
under sighted conditions; he claims already to have *heard the effect*
of green pens. So all he needs to do now is redo the comparison
blinded,
using the same material, to see if it was the result of bias or not.


Ok, let me try to be concise here and then leave this contentious
debate to
others for a while.

Mr. Scarpitti heard it sighted so you assume his program was sensitive
enough
for him to hear the same thing blind (if it was in fact audible and not
the
result of biases).

Not to mention: The existence of 'bias' as being able to produce these
effects has not been established.

..snip remainder....

Sure it has. In "Can You Trust Your Ears" (AES Preprint 3177; 1991
Convention)
I show results of an experiment (31 subjects, 431 trials) where it can be
seen
that humans (housewives to audiophiles) are strongly biased to report
"preference" for one of two identical sound presentations and to describe
small
(1 dB) differences in level as differences in 'quality.'

If you doubt this, just carefully observe audio-salon demonstration
techniques.
(or even your own demonstration protocols) The salesperson ALWAYS turns
the
volume control ALL the way down between comparisons and then controls the
overall level on the comparison. There is NEVER an attempt to match levels
.... EVER.