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Seeing/hearing and sighted/blind tests
On 2 Mar 2004 19:40:02 GMT, (Michael
Scarpitti) wrote:
chung wrote in message ...
Several questions:
1. Did you level-match during your listening tests?
I listened in succession to the same piece of music. I adjusted the
volume as necessary. The differences I heard had nothing to do with
volume. They were GROSS differences.
That's the first fatal flaw. It is well known (Musical Fidelity even
used it very cynically in the X-10D) that a level difference of about
0.5-1dB is easily detected as change in sound *quality* (more detail
etc), but is not detected as a difference in volume. It is likely that
your perceptions are in error, and you *must* level-match to +/- 0.1
dB to avoid such problems.
2. Do you think you can tell them apart in a DBT?
I KNOW I could, with perhaps one exception. Two were fairly close, but
the others were all quite different. The Harmon Kardon was similar in
tonal quality to the Denon, but it had less dynamic impact, which was
not noticeable until sharp, powerful bass transients occurred. Then it
was obvious. If you played Mozart's soft strings on the two, it would
be hard to tell them apart. But play Mahler's 5th, and it's a dramatic
difference.....
Then *do* a blind test - and tell us what happened. I guarantee you'll
be surprised...........
3. Can you tell differences between cables?
Yes, I can.
Then prove it in a blind test. There is a pool of between 4 and 5
thousand dollars waiting to be collected by anyone who can do this.
You may be interested to know that in the five years or so that it's
been around, no one has even *tried* to collect it.
--
Stewart Pinkerton | Music is Art - Audio is Engineering
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