Title :
Design of FIR Halfband Filters for Orthonormal Wavelets Using Remez Exchange Algorithm
Author_Institution :
Dept. of Inf. & Commun. Eng., Univ. of Electro-Commun., Chofu, Japan
Abstract :
A new method is presented for designing FIR halfband filters for orthonormal wavelets. When the filter degree, number of vanishing moments, and tolerance error in passband/stopband are specified, the filters with the maximal passband/stopband width are designed by using Remez exchange algorithm. It is well-known that Remez exchange algorithm is an efficient approach for equiripple design of FIR linear phase filters. Therefore, FIR halfband filters with a given tolerance error can be easily obtained. Finally, some examples are presented to demonstrate the effectiveness of the proposed design method.
Keywords :
FIR filters; band-pass filters; band-stop filters; wavelet transforms; FIR halfband filters design; FIR linear phase filters; Remez exchange algorithm; orthonormal wavelets; passband-stopband filters; tolerance error; Equiripple design; FIR halfband filter; Remez exchange algorithm; orthonormal wavelet;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2009.2025829
