[sdiy] minimoog note priority

[Harry Bissell]

I don't have the minimoog schematic here, but you might just
reverse the position of the current source (inverting the keyboard
direction), then invert that CV and add a DC offset to get what you want.

I made a 'duophonic' keyboard by using a two bus Pratt-Reed kbd, a resistor
divider string, and a current source at both ends of the keyboard. One was
'normal' the other inverted like I described. This ran to two VCOs, if you pressed
one note you got unison, if you played two notes you get two notes. One note was
'low note' priority, the other 'high note' (both available at the same time)

This would not work with the 'one bus' keyboard method...

H^) harry

----- Original Message -----
From: David Griffith <dgriffi at cs.csubak.edu>
To: Synth DIY <synth-diy at dropmix.xs4all.nl>
Sent: Wed, 14 Jul 2010 02:52:34 -0400 (EDT)
Subject: [sdiy] minimoog note priority


If I manage to find a Pratt-Read keybed for my minimoog project, I'd like 
to modify it such that I can switch between lowest and highest note 
priorities.  Can this be done?

-- 
David Griffith
dgriffi at cs.csubak.edu
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-- 
Harry Bissell & Nora Abdullah 4eva