Previous columns have described how analog and switched-capacitors filters work and provided a real example of each. Now on to digital filters that process discrete-time digital values, rather than ...

If you program using values that represent anything in the real world, you have probably at least heard of the Kalman filter. The filter allows you to take multiple value estimates and process them ...

A while ago, I wanted to experiment with a simple audio frequency filter measurement setup, but surprisingly, my lab is still missing a swept signal source. As I contemplated a quick and dirty ...