[Polyphony, etc....]

[Gene Zumchak]

S


> On 27 Apr 99 19:28:41 EDT Harry Bissell <harrybissell at netscape.net>
> writes:
> >Jason: You will receive MANY replies. Here's mine
> >
>
> >    The ARP 2600 was "duophonic" one oscillator could track the
> >highest and
> >lowest key played.
>

Damn.  This is really amazing, Harry.  Could you post the circuit for
the
Oscillator that plays two different notes at a time.  This I've got to
see.

It would be good for anybody on this list to know how a Moog-style
monophonic keyboard works.  ANY
such keyboard can be modified to play two notes, the lowest and highest.

This was first done, to my knowledge, in the Sonic V/VI.  It was
patented.  I
would like to take an hour or two and write a tutorial on how a Moog
keyboard works and how to modify one to make it provide a control
voltage for the second note, except today I have to write an exam to
give tonight and then a final exam to give a week from Monday.  But
someday very soon I will write a keyboard tutorial if anybody expresses
interest.

Gino