•Digital Filters can be implemented in one of two ways:
feed forward only (Finite
Impulse Response - FIR) and feed forward and feed back (Infinite Impulse Response - IIR)
•FIR filters are usually used because they are easier to
design. IIR designs can lead to problems with instability.
•MATLAB’s filtdemo provides an interactive method of learning about FIR and IIR