[sdiy] Ms20 filter clone PBC?

[Ian Fritz]

At 02:49 PM 2/27/2008, Aaron Lanterman wrote:

>This is now ringing a bell.
>
>Is the transfer function something like this?
>
>a s^2 + b s
>------------------
>c s^2 + d s + e


Yep, that's it.  I have:

As(1+As)
-------------------
(1+As)^2 - BAs,

Where A is the (effective) RC time constant and B is the feedback gain.

   Ian