[sdiy] Analog Computers ( again )

[Aaron Lanterman]

On Feb 11, 2009, at 3:14 PM, Scott Nordlund wrote:

>
> Actually I believe it's a 2-pole state variable filter.  I actually  
> hadn't noticed before but it does have two capacitors per  
> integrator.  My roommate has one and I have to say the filter is  
> really a weak point...

Oh you are quite right - I got that mixed up with a 4-pole version  
that one of my students tried to build using those structures.

- Aaron