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Altera_Forum's avatar
Altera_Forum
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18 years ago

FIR Filter Explanation

I have a, hopefully straightforward, question that may aid in my understanding of filtering, and DSP in general. Consider a system which instantiates an Alter FIR function. It is fed w...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

What are you seeing?

From my experience oversampling by this much would make very hard work of the FIR. The best approach would be to decimate the input signal down to something like 4-20times the Fsig, then filter.

What does the frequency plot of the FIR look like, you must require 100s of taps for this spec....?