new here plus a question...

[Bram de Jong]

On Thu, 18 Jan 2001, Happy Harry wrote:
> They are just filters... and fairly simple ones. There is
> a thread going on at the same time about very complex and
> subtle processes that happen in these filters. So there is some
> cross-talk here.

Aha...

> The "tone controls" in the Duncan application are typical of guitar
> amps.  If you model them, you will have a first-order approximation
> of how they "sound".

Aha! But, my question really was: how do I do this :)

> But most of us think that there is still something missing from the
> model. Maybe parasitic components of the circuit, or non-linear
> processes that are or are NOT obvious.

Yeah, I got that impression. But, IMHO, I'll try the 'first order' model
first... No need to go runnin' before I can't even crawl yet...

> The other thread was "Why does the Moog Ladder filter have some
> quality that does not allow it to be modeled exactly" This is probably
> way beyond what you are trying to get to right now.

Hmmm. Isn't this allso because the straight s-lane to z-plane transform
introduces delay-free feedback loops? (that is, additional to the
'unlinear' part)

> In fact... no one here understands it either... that's why the talk
> is going on...

OK.
Thanx a lot.

Bram

PS: why do I get all SDIY mails twice in my mailbox?