Degenerate Chebyshev Approximation Of The Recursive Digital Filter Group Delay Response

• Autorzy: Micic A. , Lekic P. , Spalevic P. , Petrovic V.

Warianty tytułu

PL

Zmodyfikowana aproksymacja Czebyszewa uwzględniająca opóźnienie w filtrach cyfrowych

• Języki publikacji: EN

Abstrakty

EN

Multiple-pole transfer functions approximating a constant group delay in a degenerate minimax sense is presented in this paper. The introduction of constraints at the origin and at extremes of the group delay near the cutoff frequency, has improved passband and stopband performances significantly, while by using the multiple pole transfer function, the less sensitivity to the filter coefficients change is achieved simultaneously.

PL

Zaprezentowano wielobiegunową funkcję transferu uwzględniającą grupowe opóźnienie w filtrach cyfrowych. Wprowadzenie wymuszenia znacznie poprawia parametry zarówno w paśmie przenoszenia jak i zaporowym. Uzyskano też mniejszą wrażliwość na zmianę parametrów filtru.

Słowa kluczowe

EN

Chebyshev approximation; multiple pole transfer function

PL

filtr Czebyszewa; filtry cyfrowe

• Wydawca: Wydawnictwo SIGMA-NOT
• Czasopismo: Przegląd Elektrotechniczny
• Rocznik: 2012
• Tom: R. 88, nr 5b
• Strony: 218--221
• Opis fizyczny: Bibliogr. 15 poz., schem.

Twórcy

autor

Micic A.

autor

Lekic P.

autor

Spalevic P.

autor

Petrovic V.

• Faculty of Mechanical Engineering,University of Nis, Serbia

Bibliografia

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• [9] V. Cappelini, A. Constantinides, P. Emiliani Digital filters and their applications, Academic press, London, 1978.
• [10] S. Holford, P. Agathoklis, "The use of model reduction techniques for designing IIR filters with linear phase in the passband", IEEE Trans. Signal Processing., Vol. 44, pp. 2396-2404, Oct. 1996 .
• [11] B. Weisburn, T. Parks, B. Shenoy, "Error criteria for filter design", Proc. of the IEEE International Conference on Acoustics, Speech, And Signal Processing, Vol. 3, page III: 5658211;568, IEEE ICASSP-94, Adelaide, Australia, April 198211, 22 1994.
• [12] XI Zhang, K. Suzuki, T. Yoshikawa, "Complex Chebyshev approximation for IIR digital filters based on eigen-value problem" IIEEE Trans. on Circuit and II: Analog And Digital Signal Processing, Vol. 47, No. 12, pp.1429-1436, December 2000.
• [13] J. Bandler, M. Rizk, H. Tromp, "Efficient calculation of exact group delay sensitivities", , IEEE Trans. on Microwave Theory and Techniques, Vol. MTT-24,No.4, pp. 188-194, April 1976.
• [14] G. Allen, , "Perturbation effects on filters having multiple poles", Acoustics, Speech, Snd signal Processing, IEEE International Conference on, 1994, ICASSP-94 vol. 6, pp. 589-592,19-22 April 1994
• [15] A. Deczky Equiripple and minimax (Chebyshev) approximations for recursive digital filters , Addison-Wesley, 1989.