Understanding frequency selective services requires specific domain knowledge. This video provides an overview of filtering basics beyond just know if your filter is low-pass, band-pass, high-pass, or notch. How quickly does it roll off? How far into the stop band does my Nyquist criteria need to be? Why would I accept ripple in my filter? Is my attenuation enough?
Checkout this video if you want to know more about the terminology and operation of filters. If you have a need to implement a signal processing project, contact us at Duotech Services.