[sdiy] Basic core designs of commercial analogs

[Magnus Danielson]

From: "jhaible" <jhaible at debitel.net>
Subject: Re: [sdiy] Basic core designs of commercial analogs
Date: Tue, 24 Dec 2002 01:51:49 +0100

> Merry Christmas to all of you!

Merry Christmas...

> I can't participate in these discussions as much as I'd want to right now,
> but ...
> 
> >Jürgen is the promotor for the unscaled linear FM.
> 
> Really?

Yes. I recall a few years (and a few more I fear) back you did sing the
glory for this. Enought for it to stick.

> Most circuits I've built have the FM amount scaled by the
> keyboard CV. (Multiplying the expo converter's bias current
> - = FM input - with the keyboard CV, just as practically everybody
> else does.)

I never said you allways did it! Only that you promoted it, in a
quite way ;O)

> What I really recommend is the thru-zero FM (also "scaled"), because
> this is where linear FM starts to sound interesting IMO. But I don't
> have a circuit to do this glitch free, either.

How do you do that then? It was some time since I last spent the little
grey on the matter...

If you have a triangle wave core, I guess it is fairly simple as compared
to the sawtooth...

Cheers,
Magnus