python and filter design: calculating "s" optimal transform

[Terry Reedy]

On 6/1/2010 2:18 PM, robert somerville wrote:
> Hi;
> this is an airy question.
>
> does anybody have some code or ideas on how to calculate the optimal "S"
> transform of user specified order (wanting the coefficients)  for a
> published filter response curve, ie.
>
> f(s) = 1.0/(a1*S^2 + a2*S + a3)

If you do not get an answer here, try the scipy list.