"Robert McTigue" wrote in
message
Peter Larsen wrote:
Arny Krueger wrote:


Arny, I am not _really_ sure you invented that concept,
but you certainly promoted it and made it easy to do it
computer based.



Check the ABX JAES paper by Clark. I'm in it.


Interesting. I should obviously have read your site with
more care.
Ask Clark - he'll tell you that I built the first ABX
Comparator and did the first ABX test. You can find
Clark's phone at his DLC Design web site:



http://www.dlcdesignaudio.com/


A perhaps more useful link is:

http://www.provide.net/~djcarlst/abx.htm

since it tells the story. I had underestimated your part
in this, thank you for clearing it up.

Thanks you for the post Peter as it is informative as to
who "invented" this ABX.

My choice of wording w/r/t is very careful because the development of ABX
was done by a committee. The committee specs were that the test was going to
be Double Blind, able to be self-administered, and easy to use. I did all
the hands-on development, added a lot of innovations of my own, and I did
the alpha testing.

We had several amp switching boxes on hand to start with that missed spec by
miles and miles. There were three distinct generations of the box, the last
of which was a mixture of CMOS and TTL.

It took several years of additional work which I did solo, to develop a
suitable relay box for actually routing the signals. The final product was
capable of switching anything from phono inputs to mic inputs to line-level
signals to speaker-level signals without any audible transients of any kind.
All in one box, that we sold for $400.