Thanks a lot for your response. I will try to wade through your suggestion
but they sound quite complicated to me.
In this respect I've got another question which is related to my first
Let's assume I have finally found a set of coefficients for my IIR whic
'solve' a given problem. If I understood correctly, these coefficien
values will only be 'correct' for a single sampling rate of the signal. S
if someone want to use the filter with a signal of a different samplin
rate, he need to somehow solve the tasks you described before, right?

Now my question would be, if I want to describe the filter properties, fo
example in a publication, how would I do it in a way that is independent o
the sampling rate I used?
Would it be preferable to publish impulse response plots instead of th
filter coefficients?

Thanks again for your support.

Greetings,
Marcus