[sdiy] suboctaves

[Scott Bernardi]

Hey, I've wondered about how to do an "additive synthesis" type module that
works sort of like the Hammond organ drawbars. Does anybody know what harmonics
each of the drawbars add? Of course, I'm sure the Hammond is outputting
something closer to a sine that a square.

I've got a dual sine suboctave circuit at
http://members.home.net/sbernardi/elec/og2/og3_sine_suboctave.html


Ken Stone wrote:

> Check out mu suboscillator project at
> http://198.164.142.50/~cgs/modules/subosc.html
> It pretty much covers all this.
>
> I don't have any of the subsoc PCB in stock at the moment though.
>
> Ken
>
> >curently I'm using CD4017's to generate /2 and /3 subharmonics. This means
> >six chips : quad opamp for quaring up, one 4017 for /2, one 4017 for /3,
> >times two for both fatman voices.
> >
> >I'm wondering a few things : are there any chips that give multiple
> >divided outputs? how do I accomplish /1.5?
> >
> >
> >thanks
> >
> >
> >-
> >finland red
> >germany black
> >egypt white
> >
> >
> _______________________________________________________________________
> Ken Stone   sasami at blaze.net.au
> Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
> Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>
> Catgirl Paradise <http://www.anime.net/~kens/>

--
Scott Bernardi
sbernardi at home.net