Title :
A new algorithm for designing near-optimal Chebyshev IIR and FIR filters
Author :
Tarczynski, Andrzej ; Cain, Gerald D.
Author_Institution :
Sch. of Electron. & Manuf. Syst. Eng., Westminster Univ., London, UK
Abstract :
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
Keywords :
Chebyshev approximation; Chebyshev filters; FIR filters; IIR filters; circuit optimisation; digital filters; errors; filtering theory; frequency response; minimisation; Chebyshev FIR filters; Chebyshev IIR filters; Chebyshev norm minimisation; Lawson algorithm; Levy linearisation; design algorithm; digital filter design; digital filters; frequency response approximation; frequency response error; near-optimal filter design; weighted squared error minimisation; Algorithm design and analysis; Chebyshev approximation; Design engineering; Design optimization; Digital filters; Finite impulse response filter; Frequency response; IIR filters; Manufacturing systems; Minimization methods; Systems engineering and theory; Transfer functions;
Conference_Titel :
Circuits and Systems, 1995., Proceedings., Proceedings of the 38th Midwest Symposium on
Conference_Location :
Rio de Janeiro
Print_ISBN :
0-7803-2972-4
DOI :
10.1109/MWSCAS.1995.504506
