Iterative Design of Constrained IIR Digital Filters Requiring No Initial Values
Hisakazu Kikuchi, H. Watanabe, Takufumi Yanagisawa · Institutional Repositories DataBase (IRDB) · 1986
An iterative design of constrained recursive digital filters is developed. The designing scheme requires no initial values. The constraints are subjected to degrees of both numerator and denominator, transmission zeros and poles, if any, and passband and stopband shaping. The resulting filter completes a prescribed magnitude of either passband or stopband ripples. The optimality property of the filters is examined in detail with emphasis on specifications. The designing scheme involves the elliptic design as a special case. Illustrative examples are also given.