Partial equalization of non-minimum-phase impulse responses

Authors:
Ahfir Maamar;Izzet Kale;Artur Krukowski;Berkani Daoud
Affiliations:
Department of Informatics, University of Laghouat, Laghouat, Algeria;Department of Electronic Systems, University of Westminster, London, UK and Department of Electronic Systems, Eastern Mediterranean University, Gazimagusa, Mersin, Cyprus;Department of Electronic Systems, University of Westminster, London, UK and National Center of Scientific Research "Demokritos", Agia Paraskevi, Athens, Greece;Department of Electronics, Ecole Nationale Polytechnique, Algiers, Algeria
Venue:
EURASIP Journal on Applied Signal Processing
Year:
2006

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Abstract

We propose a modified version of the standard homomorphic method to design a minimum-phase inverse filter for non-minimum-phase impulse responses equalization. In the proposed approach some of the dominant poles of the filter transfer function are replaced by new ones before carrying out the inverse DFT. This method is useful when partial magnitude equalization is intended. Results for an impulse response measured in the car interior show that by using the modified version we can control the sound quality more precisely than when using the standard method.