[sdiy] 2164 Korgasmatron VCF

[cheater cheater]

Wow, thanks! That's very useful!

D.

On Tue, Sep 7, 2010 at 15:47, Thomas Strathmann <thomas at pdp7.org> wrote:
> On 9/7/10 13:54 , cheater cheater wrote:
>>>
>>> Looking at a transfer function as the product of some simple to
>>> understand signal processing blocks (like integrator, differentiators,
>>> and
>>> gain stages) for doing a sketch of the composed amplitude and phase
>>> response
>>> gives you a more "intuitive" understanding.
>>
>> That's pretty cool. However I have a problem figuring out what the
>> Laplace plane works like. I still don't feel it naturally. Maybe I
>> should go and look at the transfer functions for some basic blocks,
>> that could help make it easier. I wonder what the best things would be
>> to start with.
>
> For analog electronics and filters in particular probably the simple
> combinations of resistors, inductors, and capacitors in their first and
> second order passive filter configurations. This is also what's sometimes
> used as introductory example in systems theory when some EE background can
> be assumed.
>
>> Control theory is a whole discipline :) What specifically do you
>> recommend?
>
> Something like control theory 101 for engineers or how one would call that.
> The systems theory aspect of a first year course: linear SISO systems,
> Laplace transform, integrators, differentiators, gain blocks, and their
> combinations, sketching a Bode plot given a transfer function in the s-plane
> (something like this:
> http://www.ijee.dit.ie/OnlinePapers/Interactive/Cheevers/EACWebPaper/index.html),
> perhaps root locus diagrams (poles plotted vs. gain -- let's you quickly see
> when and how a system becomes unstable). I'm probably forgetting some things
> that could also be of interest to you, but you will probably find them for
> yourself one you start digging through the suggested topics. Hope it helps a
> little.
>
>        Thomas
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