We present a simple algorithm for the factored polynomial (Finite Impu
lse Response, FIR) approximation of rational (Infinite Impulse Respons
e, IIR) filters which may be used to construct inverse filters. When a
pplied to quadrature mirror filters, our approach yields a simple way
of generating an efficient FIR filter bank which inherits the properti
es of IIR filter bank with any desired accuracy. (C) 1995 Academic Pre
ss, Inc.