New modules done

[Chris MacDonald]

After a long hiatus due to an extremely busy period at my work, I have
finally finished two more modules in my system.  They are a dual ADSR
and a dual analog multiplier.  The ADSR is my own design although I
borrowed liberally from several other circuits.  The multiplier is based
on the AD633 chip and was quite simple to put together.  I've posted
some pictures and a schematic if anyone is interested:
http://www.evenfall.com/diy/

-Chris M.