[sdiy] filters, state variable in particular

[harrybissell]

Roy...

What planet have you been VACATIONING on ???   :^P

SVF is used in thousands (well... hundreds... would you believe... tens ???)
of places in synths.

Wasp filter, Oberheim SEM, early ARP Odyssey, Aries 314, Moog
Satellite (iirc also a ladder in that one). ARP 1047 Multimode filter...

EFM VCF1...

Stompboxes... Mutron III envelope follower

"Muffy the hex fuzz"....  :^P

Almost all multimode filters are SVF (not all, most)

Yes... very useful. Its one of my favorites

H^) harry  (I think 'tens of places' is probably correct :^)

"Roy J. Tellason" wrote:

> I just happened across a magazine article that among other things talked about
> the state variable filter,  and was wondering how useful that circuit would
> be in the SDIY context.  Comments?
>
> --
> Member of the toughest, meanest, deadliest, most unrelenting -- and
> ablest -- form of life in this section of space,  a critter that can
> be killed but can't be tamed.  --Robert A. Heinlein, "The Puppet Masters"
> -
> Information is more dangerous than cannon to a society ruled by lies. --James
> M Dakin