29 Sep
2002
29 Sep
'02
9:27 p.m.
Dear list,
Based on texts from electronics classics, I made a patch in which a FIR filter is built as defined by its difference equation. I was hoping to to try to understand better this resource, it would have a didactical purpose (since there are already better implemented filters). But after creating the patch, I realized that I couldn't make it work properly, because I didn't knew how to calculate the difference equation for a type of filter (say, for example, a 1000Hz low-pass).
I put the patch in http://home.arcor.de/jmmmp/. I would like to ask if with this patch it is really possible to define a filter, or there is something missing. And if possible, how to calculate the coefficients.
Thanks,
João Miguel Pais