Originally Posted by FMW
Oh, and Arny actually did invent ABX testing, for your information.
Ah. You must have other data than I have. This is what I know:
1. An entire paper introducing/explaining the ABX protocol was in the Journal of Audio Engineering Society written by Clark, lacks any reference to inventions by Arny. The only reference to Arny is thanking him for his contributions: http://www.aes.org/e-lib/browse.cfm?elib=3839
On the contrary, he points out some of the flaws in the switchboxes as built by the hobby society Arny was contributing to:
"REFINEMENTS TO THE A/B TEST
The author's first experience with double-blind audibility testing was as a member of the SMWTMS Audio Club in early 1977. A button was provided which would select at random component A or B. Identifying one of these, the X component was greatly hampered by not having the known A and B available for reference. This was corrected by using three interlocked pushbuttons, A, B, and X. Once an X was selected, it would remain that particular A or B until it was decided to move on to another random selection.
However, another problem quickly became obvious. There was always an audible relay transition time delay when switching from A to B. When switching from A to X, however, the time delay would be missing if X was really A and present if X was really B.
Not so complimentary to whatever invention created by Arny.
2) This is the only reference I have ever found that talks about an invention, written by one of Arny's co-workers: http://home.provide.net/~djcarlst/abx.htm
The ABX Company designed, manufactured and sold the ABX Double Blind Comparator System, which made possible scientifically valid self run subjective comparisons of audio components. The information on these pages is historical. This web site documents the ABX Comparator System and lists the subjective test results obtained by the company and the Southeastern Michigan Woofer and Tweeter Marching Society, SMWTMS. I was one of six partners who formed and ran the ABX Company from 1980 to 1987.
May 7, 1977 SMWTMS did the first ever audio double blind subjective listening tests. An argument over the audibility of differences between amplifiers at a club meeting in November 1976 resulted in an agreement that a double blind test could settle the question. Just six months later, Arny Krueger gave a lecture on his design of a double blind comparator and the first three double blind tests were done. The results include the first three listed in the Power Amplifier Comparison Table in the data. Thus we credit Arny Krueger and his opponent in the argument, Bern Muller, as the inventors of the ABX Comparator. The agreement to create a company to manufacture comparators was informally made the following summer.
So it says that Arny was a co-inventor, not the sole inventor. Further, it says that they invented the ABX comparator
. That is a box, not a methodology.
I'm afraid you are over your head in this forum. Again, best of luck to you.
He is in good company unfortunately. But maybe you can dig us out of there by providing more information than I have on Arny's invention. Because I have not been able to get clarity from Arny on any of this.