Discrete-Coefficient Linear-Phase Prototypes for PR Cosine-Modulated Filter Banks

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.

Original languageEnglish
Title of host publicationProceedings of the 1998 IEEE International Conference on Acoustics, Speech and Signal Processing, ICASSP '98 (Cat. No.98CH36181)
Number of pages4
PublisherIEEE
Publication date01.12.1998
Pages1433-1436
Article number681717
ISBN (Print) 0-7803-4428-6
DOIs
Publication statusPublished - 01.12.1998
Event1998 23rd IEEE International Conference on Acoustics, Speech and Signal Processing
- Seattle, United States
Duration: 12.05.199815.05.1998
Conference number: 101940

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