View Single Post
  #2   Report Post  
chung
 
Posts: n/a
Default Comments about Blind Testing

watch king wrote:
The loudspeakers
used in home hifi systems do not cool nearly as well as pro
loudspeakers, and the negative effects on sonic characteristics due
to temperature change are much greater than those demonstrated by
professional loudspeakers. And that is just one of the factors
involved with loudspeaker compression. These changes in sonic
characteristics make it nearly impossible to do any real research on
speaker wires that could be relevant to audiophile listening because
the test to make such comparison "fair" would be literally impossible
to design. By the time listeners could focus on the sound playback of
of one of the test wire/products the second product in the test would
already be unfairly tested because the test loudspeaker system
(acoustic microscope equivalent) will not likely "sound" the same as
it did 30 seconds ago. This means that the test passage would need to
be made longer and restarted after a specific cooling off time and by
then the human acoustic memory is gone. This could be why so many
anecdotal testimonials involve hearing "things" after the time was
taken to disconnect one set of speaker wires and connect a second
set. The speakers probably cooled down and sounded better after the
"wire changing period".


So quick A/B switching and using short snippets of sound are the most
effective for discrimination. I also found pink noise to be very
revealing for detecting level and frequency response differences.