The term "Adaptive Just Intonation"

On Thu, 17 Jun 1999, Paul H. Erlich wrote:
> By the way, I called it Adaptive JI after John deLaubenfels started doing
> so.

It took just a minute looking through my old files to find a use of the
term "Adaptive JI" from as early as 1994. (Gary Morrison was the
culprit.)

(I think I was the one who introduced JdL to the term, BTW.)

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Paul H. Erlich wrote:
>> By the way, I called it Adaptive JI after John deLaubenfels started doing
>> so.

Paul Hahn [TD 222.14]
>It took just a minute looking through my old files to find a use of the
>term "Adaptive JI" from as early as 1994. (Gary Morrison was the
>culprit.)

>(I think I was the one who introduced JdL to the term, BTW.)

I coined the term "Automatic Just Intonation" in late 1991 (or early
1992) and at the time was totally unaware of anyone else doing anything
similar. I took out a provisional patent in early 1992 and visited a
couple of Japanese keyboard manufacturers that year with the idea. I
then made the idea public because it was going to cost me about $50,000
for world patents and there was an old patent that did the 5 ratios
correctly (and the 3s were already OK) and so it covered 90% of the
cases already.

Does Paul's paper predate 1994?

Re period doubling: It seems that I must have got confused between
frequency doubling and period doubling but I knew it was doubling and
not halving ;^) The reason no doubt is that I spent 15 years on the
harmonics theory which does have frequency doubling.

I still don't think that the undertones are chaos even though I was
confused about this.

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Ray Tomes wrote,

>Does Paul's paper predate 1994?

Which Paul? My paper has nothing to do with either adaptive or
automatic JI.

>I still don't think that the undertones are chaos even though I was
>confused about this.

I never said undertones _are_ chaos, only that chaos theory explains
them. If you study chaos theory, you might find the phenomenon of
bifurcation fits Jim Cole's description, and even your explantion,
of the phenomenon very closely.