Naslov
Design of causal stable perfect reconstruction two-channel filter banks

Autori
Bregović, Robert ; Saramäki, Tapio

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of 2nd International Symposium on Image and Signal Processing and Analysis / Lončarić, Sven ; Babić, Hrvoje - Zagreb : Sveučilišni računski centar Sveučilišta u Zagrebu (Srce), 2001, 545-550

Skup
International Symposium on Image and Signal Processing and Analysis

Mjesto i datum
Pula, Hrvatska, 19.06.2001. - 21.06.2001

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
two-channel filter banks. IIR filters; stability; optimization

Sažetak
An efficient optimization algorithm is proposed for designing causal stable perfect-reconstruction two-channel infinite impulse response filter banks originally introduced by Basu, Chiang, and Choi. The problem is stated as a constrained optimization problem where the maximum of the stopband energies of the analysis filters is minimized subject to the given constraints. First, the maximum allowable passband ripple of both filters is fixed and the maximum value in the transition bands is the maximum allowable passband value. Second, the poles of these filters are forced to lie inside the unit circle. It is shown that the second constraint can be included in the proposed algorithm by using Rouché’s theorem. Several examples are included illustrating the efficiency of the proposed design scheme as well as the superiority of the resulting banks compared to those ones obtainable by using other existing design techniques.

Izvorni jezik
Engleski

Znanstvena područja
Elektrotehnika

POVEZANOST RADA