A genetic algorithm for the design of finite word length arbitrary response cascaded IIR digital filters

摘要: This paper describes a genetic algorithm (GA) for the design of optimal finite word length (FWL) infinite impulse response filters with arbitrary functions using cascade second order sections. Such structures could be used implementation an unrestricted range responses and are usually characterised by having low sensitivity to variations in simple stability tests. A distinct feature GA is that it allows single-step-design from specified filter template hence avoiding additional errors being introduced as case two-stage-design approach. Depending on template, including those main classical considerably reduced coefficient wordlengths. The commences highlighting FWL effects digital reviewing existing attempts GAs design. Next, technique adopted here reports results obtained examples 8th 10th filters.