A new algorithm for designing near-optimal Chebyshev IIR and FIR filters
Andrzej Tarczynski, G.D. Cain · 2002
The paper presents a new algorithm for designing digital filters approximating a given frequency response. The method combines and modifies known techniques which are utilised in digital filter design such as: Levy's linearisation, minimisation of weighted squared error, or Lawson's algorithm. The ultimate goal of the proposed approach is to obtain a design algorithm for filters minimising the Chebyshev norm of the frequency response error. The proposed algorithm is illustrated by sample designs.