Title :
Discrete-coefficient linear-phase prototypes for PR cosine-modulated filter banks
Author_Institution :
Dept. of Electr. & Electron. Eng., Western Australia Univ., Nedlands, WA, Australia
Abstract :
A method for the design of perfect reconstruction (PR) linear-phase prototypes for cosine-modulated filter banks with discrete coefficients is presented. Such prototypes are of great interest for efficient hardware implementations. The design procedure is based on a subspace approach that allows to linearly combine PR prototype filters in such a way that the resulting filter also is a PR prototype. Within a given subspace the weights of the optimal linear combination can be easily computed via an eigenanalysis. The filter design is carried out iteratively, while the PR property is guaranteed throughout the design process. No non-linear optimization routine is needed
Keywords :
circuit optimisation; eigenvalues and eigenfunctions; filtering theory; iterative methods; signal reconstruction; cosine-modulated filter banks; design procedure; discrete coefficients; eigenanalysis; filter design; iterative design; optimal linear combination; perfect reconstruction linear-phase filters; prototype filters; subspace approach; Australia; Channel bank filters; Design methodology; Filter bank; Hardware; Lattices; Process design; Prototypes; Signal synthesis; Visual communication;
Conference_Titel :
Acoustics, Speech and Signal Processing, 1998. Proceedings of the 1998 IEEE International Conference on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-4428-6
DOI :
10.1109/ICASSP.1998.681717
