[bob]

On Apr 6, 2:55=A0pm, "Harry Lavo" wrote:

The scientists noted two important things, in their opinion. =A0One was t=
he
creation of a relaxed listening environment that duplicated to some degre=
e
the ideal home listening environment. =A0The other was the use of musical
excerpts that lasted a bit longer than three minutes and more time betwee=
n
musical excerpts than normally used. =A0 They explicitly stated that they=
felt
the 20 second snippets of music used in the testing done for Sony twenty
years earlier was a possible major flaw in the work that established the
22khz CD cutoff (in which case it is also a flaw in most ABX testing, as =
is
the quick switching). =A0This latter conclusion was based on preliminary =
work
with the EGG system wherein they determined that there was a substantial
"ramp up" and "ramp down" in brain activity after the start and stop of
musical selections, suggesting that short musical excerpts and
quick-switching both had the potential to distort the musical experience.

But Oohashi et al were wrong about this, as we now know. People
attempting to replicate their test have found that conventional DBTs
do detect differences with and without the mystical "hyypersonic
effect." So any claim that the Oohashi approach is better is
falsified. (Also, as a side note, it appears that what people were
hearing was actually IM distortion within the audible band, so they
were wrong about that, too..)

bob