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Convention Paper

Designing Sets of N Doubly Complementary IIR Filters

Authors: Favrot, Alexis; Faller, Christof

AES Convention 130 · Paper 8455 · May 2011

Abstract

A filter design procedure is described for obtaining sets of N doubly complementary IIR filters for any N and any bandpass frequencies. The N doubly complementary IIR filters are built following a tree-like structure based on pairs of doubly complementary IIR filters and additional all-pass filters. The sum of all band signals is an all-pass filtered version of the original audio signal. The complementary IIR filters can be used instead of an analysis filterbank (full rate). The corresponding synthesis filterbank is simply the sum of all band signals. The proposed filters enable high quality delay critical audio processing.

Details

Published in
AES Convention 130
AES Convention
130
Paper number
8455
Publication date
May 6, 2011
Session subject
Posters: Processing and Analysis
Affiliation
Illusonic LLC, Lausane, Switzerland (See document for exact affiliation information.)
Type
Convention Paper