[sdiy] Pole Dancing

Donald Tillman don at till.com
Wed Sep 19 20:27:28 CEST 2018

> On Sep 19, 2018, at 11:05 AM, Dave <dlmanley at sonic.net> wrote:
> Don, can you dynamically show the transfer function polynomials (or just coefficients)?

'Good suggestion.  I can, I thought about doing it, but it turns out they're not that interesting.   

The polynomial is created by the real roots, and the primary feedback just subtracts from the 0th coefficient, and the secondary feedback just subtracts from the 1st coefficient.

The real fun is how such a simple change causes the roots to fly around.

  -- Don
Donald Tillman, Palo Alto, California

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