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Old January 6th 05, 05:27 PM posted to uk.rec.audio
John Phillips
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Posts: 294
Default DBT a flawed method for evaluating Hi-Fi ?

In article , Richard Wall wrote:
er thanks
I will try and read through it!
"John Phillips" wrote in message
...
In article , Richard Wall wrote:
I believe that DBT is unsuitable for Hi-Fi evaluation as the detection
method (you the listener) are anticipating a change to occur at some
point and will be listening to changes not trying to enjoy music.


The testing and analysis method does indeed have to deal with this
tendency to anticipate change.

Can anyone point to a Hi-Fi DBT test where no changes were actually made
in
the source material to check that the audience could perceive no change ?
I
think that the false positives raised by such a test would invalidate
this
testing regime ?


You may be interested to read some relevant comments at:

http://www.bostonaudiosociety.org/ba...l_thinking.htm

(Note: I have only scanned the article and not evaluated it - Caveat
Lector.)


BTW a set of ABX tests and results (including positive and negative)
are to be found at http://www.pcavtech.com/abx/abx_data.htm (down the
page, including a capacitor test).

--
John Phillips