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Summary:
DBT and ABX have blinding in common. And there the resemblance ends.
Medical research DBTs rely on objective data for confirmation. In ABX
all one has is the listener's impression.
ABX procedure still lacks proper research validation and there are
grounds for suspicion that instead of "revealing subtle
differences" it obliterates them. It does not qualify as the opposite
of sighted listening.
On the other hand wisely used single or where possible double blind
listening can be a valuable addition to sighted listening when in doubt
about preference.
Contrary to ABX procedure one concentrates on "Do I like it
better?" not "Is it different?" (A much more confusing and less
interesting question to answer.)
It is important to keep in mind that your results are an opinion only.
Blind or not it is YOU listening and nobody else.
Also keep in mind that if today you hear no difference experience may
change your perceptions in the future, That is what training is all
about
What follows is lengthy background, You may stop right here.
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Audio ABX/DBT is a bundle of contradiction. Proponents of this
test use this experiment to antagonize discriminating audiophiles
because they have no money.