[sdiy] Orange Drop Capacitors?

[Magnus Danielson]

johnspeth at yahoo.com wrote:
>> In a nutshell. Say you have spent 10€ on a capacitor, or 150 € on a
>> power-chord and the sound does not improve your brain has a problem:
>> You've spend your hard earned money after all, and therefore you want a
>> satisfaction.
>>
>> In these cases your brain will in most cases prevent you from a
>> disapointment, change your perception and alter your memory - bind the
>> reality so to say -to make sure that you get your reward.
> 
> Exactly.  That's why a previous previous poster urged a metrics based approach to comparative testing.  I think it's the only way to eliminate the human subjectivity (provided the metric testing is complete and repeatable).

This is why blind A/B-testing is to be used, and why medical research is 
done in double-blind form, so not even the doctor giving out the tablets 
know and corrupt the exercise by giving away or pre-interprent data.

Double-blind auditorial tests takes some care, as to not let other 
factors "leak" information of what "A" and what "B" is. Physical 
location is speakers is one such "leak". Visual view is another etc.

Objective measurements is troublesome, as you need to know what feature 
of a measurement correlates to what "good" or "bad" phsycoacoustic 
feature you are trying to judge. It takes take to develope a sense of 
what is being important, what is being masked for most people, but a few 
etc.

Various audatorial test material can be very enligthening in the 
process. Just recall that I need to listen to one of those CDs.

Cheers,
Magnus