There is something about pythons filter design that I am misunderstanding completely. I am getting iir filters with feedback coefficients that have values like 10e20 which makes no sense.
I suspect it is a format problem, but I haven't found any info about it yet.
I a musing scipy, which is very nice, but I can't figure out how to get the coefficients into a form I can use in anything else.
I am just really confused now. These feedback coefficients should give an impulse response that increases exponentially, but the impulse response is a nice decaying exponential like I expect when using the python filter functions.
There has to be some number formatting thing I am missing.