[sdiy] Newbie question: Diode ladders

[Johannes Öberg]

(replying to multiple posters)

>I was SO surprised when I first figured that out.

Thanks, for explaining! I'm still SO surprised, and I haven't even figured 
it out! :-)

But am I understanding things correctly; you do get a very non-linear and 
non-ideal CV-to-resistance response, right? And that's why you rarely see 
"diode VCRs" for other things than VCF's and other non-critical 
applications?

>One thing to note about the behaviour of the ladder filter is that the 
input
>audio signal also has an effect on R and therefore Fc.

Does this have anything to do with the special sound of ladder filters? I 
might be imagining things, but when I set up a fast LFO to slightly modulate 
Fc on a virtual analog, I usually find the sound more "analoguesque". Its 
gets a certain "grainy" character.

Thanks guys!
/J
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