Filter Comparison

Decisions, decisions, decisions! With all these filters to choose from, how do you know which
to use? This chapter is a head-to-head competition between filters; we'll select champions from
each side and let them fight it out. In the first match, digital filters are pitted against analog
filters to see which technology is best. In the second round, the windowed-sinc is matched
against the Chebyshev to find the king of the frequency domain filters. In the final battle, the
moving average fights the single pole filter for the time domain championship. Enough talk; let
the competition begin!
CHAPTER
Filter Comparison
21

Decisions, decisions, decisions! With all these filters to choose from, how do you know which
to use? This chapter is a head-to-head competition between filters; we'll select champions from
each side and let them fight it out. In the first match, digital filters are pitted against analog
filters to see which technology is best. In the second round, the windowed-sinc is matched
against the Chebyshev to find the king of the frequency domain filters. In the final battle, the
moving average fights the single pole filter for the time domain championship. Enough talk; let
the competition begin!




Match #1: Analog vs. Digital Filters
Most digital signals originate in analog electronics. If the signal