Multirate filters use decimation and interpolation to give improved efficiency over conventional FIR structures. The design of optimal multirate filters using the least- mean-square (LMS) algorithm is presented. Both linear-phase and minimum-phase structures are possible and for each a generalized filter topology is developed, suitable for broad-band equalization applications. Trade-offs between filter complexity, target approximation accuracy, and signal distortion are also investigated.

Authors: Heylen, Robert L. M.; Hawksford, Malcolm J.
Affiliation: University of Essex, Wivenhoe Park, Colchester, UK
AES Convention: 97 (November 1994) Paper Number: 3900
Publication Date: November 1, 1994
Subject: DSP in the Digital Domain

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