This tutorial white-paper illustrates practical aspects of FIR

fi lter design and fi xed-point implementation along with the

algorithms available in the Filter Design Toolbox and the

Signal Processing Toolbox for this purpose.

The emphasis is mostly on lowpass fi lters, but many of the

results apply to other fi lter types as well.

The tutorial focuses on practical aspects of fi lter design

and implementation, and on the advantages and disadvan-

tages of the different design algorithms. The theory behind

the design algorithms is avoided except when needed to mo-

tivate them.