[sdiy] S-plane visualization software

[Grant Richter]

Hello All,

It seems that computers should be helpful for continuous time (s-plane)
filter design.

IS THERE a piece of software where you can move poles and zeros around and
see the effect on the real axis???????

Then ideally chuck out the transfer function indicated by the pole zero
setup......

After years of wrestling mentally with this gymnastics, it occurs to me MY
COMPUTER could maybe be some help???????

How about it, any decent, visually oriented, S-plane software out there?????

Looking for my Laplace in the World.....;^)