Digital Filters by Phase Correction
MICHAEL T. MANRY, J.K. Aggarwal · 1976
The present paper presents a new technique for the +zs@ of multidimensional FIR digital filters. Given the desired amplitude respqi?se, the truncation error, of a low-order approximation to a high-order filiki,'is iteratively decreased by varying the phase response. Convergence of t6e iterative algorithm is discussed. Examples illustrating the use of the technique are included. The design method is formulated for two- dimensional filters, however filters of any dimension may be designed by this technique.