Efficient design and implementation of FIR filter banks with equal passband widths
T. Saramäki, J. Vidiscakova, Sanjit K. Mitra · 1991
An approach is presented for efficiently designing and implementing FIR (finite impulse response) filter banks with equal passband bandwidths. The overall bank of L filters is generated from a prototype 2Lth-band filter with the aid of a few additional coefficients and adders. The attractive properties of these filter banks are that the sum of filter outputs is guaranteed to be a pure delay and the passband bandwidths are the same for all the filters.>