Filter Design

The problem of designing finite impulse response (FIR)
digital  filters experienced  great  activity  in  the
early 1970`s.  Most of this  work was directed  at the
problem of  optimal  filter  design, in  the  weighted
Chebyshev sense.  One algorithm  for this program,  by
McClellan, Parks and Rabiner, will  design the optimal
Chebyshev approximation for linear phase filters.  The
Chebyshev  optimization is  done very  efficiently  by
means  of  the  Remez  exchange  algorithm,  and  this
particular FIR filter  design program has  found  wide
use. 