Digital filters are always an interesting topic, and they are especially attractive with FPGAs. [Pabolo] has been working with them in a series of blog posts. The latest covers an 8th order FIR filter ...

Before we show how to optimize a FIR filter, let's review the basics of DSP architectures. (If you are already familiar with these basics, you can skip ahead to the page 2. To learn more about the ...

As a parting shot, I pointed out that there are three quadratic terms there with unity coefficients of z 0 – and there are three deep nulls in the filter’s gain response, as was shown in the figures ...