[sdiy] DIY organ

[Tony Allgood]

Adam, this will work, but you won't be able to get very high notes from
it. Your DCOs, will generating the top highest harmonic drawbar sound.
All the others will be dividing down this tone by two each divsion. If
you use four drawbars, you'll have to play very high up the keyboard to
get a note that doesn't grumble and click.

Most organs have their TOG (top octave generators) working at around
8KHz and above. If you could get your Juno to play this, then you may be
in with a chance of a decent organy patch. But I don't think you'll ever
get that out of a Juno.

What you need is some way of multiplying the DCO's output. This is a
hairy subject and one which many of us have tried to solve. Its easyish
to do at fixed frequencies but over a range of five octaves it is
getting very tricky indeed.

Frankly, you would be better going down to your local Cash Convertors
and buying one of the numerous old Baldwin, or whatever, organs and
hacking that. A wonderful source of parts... if only they weren't so
flaming big and heavy.

Regards,

Tony Allgood                   Penrith, Cumbria, England

Oakley Sound Systems                 www.oakleysound.com

Modular Synth Projects: www.oakleysound.com/projects.htm
My music:                         www.mp3.com/taklamakan