This tutorial white-paper illustrates practical aspects of FIR

filter design and fixed-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 filters, but many of the

results apply to other filter types as well.

The tutorial focuses on practical aspects of filter design

and implementation, and on the advantages and disadvantages

of the different design algorithms. The theory behind

the design algorithms is avoided except when needed to motivate

them.