A “TRICK” for the Design of FIR Half-Band Filters
نویسندگان
چکیده
Ab.rfruct -Based on a well-known property of FIR half-hand filters, this correspondence shows how the design time for equiripple half-hand filters can be reduced by a considerable amount. The observation which leads up to this improved procedure also places in evidence new implementation schemes, which simultaneously ensure low passband and stopbund sensitivities. Extension of the method to Mth-band filter design is also outlined.
منابع مشابه
On the convergence and roots of order-statistics filters
[ll] J. H. McClellan, T. W. Parks, and L. R R a b i i , “A computer program for designing optimum FIR hear phase digital filters,” IEEE Trans. Audio Elccrroacoust.. vol. AU-21, pp. 506-526, Dec. 1973. [12] P. P. Vaidyanathaa and T. Q. Nguyen, “A trick, for the design of FIR half-band filters,” IEEE Tmns. Circuit Syst. [ W O Technol.1, pp. 297-300, Mar. 1987. [13] K. Nakayama and T. Mizukami, “A...
متن کاملDesign of Low-Delay FIR Half-Band Filters with Arbitrary Flatness and Its Application to Filter Banks
Half-band filters are a class of important filters among digital filters, and have been widely used in many applications such as filter banks and wavelets. The conventional methods are mainly concerned with FIR half-band filters with exactly linear phase. However, the exactly linear phase filters have a drawback of large group delay when high-order filters are required. In this paper, the desig...
متن کاملClosed-Form Design of Maximally Flat IIR Half-Band Filters
Half-band (HB) filters are of great importance and are often used in multirate digital signal processing systems, filter banks and wavelets. In this paper, a new closed-form expression for the transfer function of the maximally flat (MF) infinite-impulse response (IIR) HB filters is presented. The filter coefficients are directly obtained by solving a linear system of Vandermonde equations that...
متن کاملDesign of Biorthogonal FIR Linear Phase Filter Banks with Structurally Perfect Reconstruction
In the design of two channel perfect reconstruction filter banks, most of the conventional methods optimize the frequency response of each filter to meet the perfect reconstruction condition. However, quantization of the filter coefficients results in some errors in the frequency response, so it is not guaranteed that the perfect reconstruction condition is still satisfied. In this paper, we pr...
متن کاملDesign of 2-D Half-Band Filters and Fan Filters Using 1-D One-Band Filters by GA Approach
This paper reveals that there exists a closed relationship between 2-D half-band filters and fan filters. It is also found that the complex conventional 2-D design methods can be replaced by the design of 1D filters only for design both filters. Furthermore, an effective GA approach is proposed for designing FIR digital filters. By minimizing a quadratic measure of the error in the frequency ba...
متن کامل