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Inverse Filters for Multi-Channel Sound Reproduction

Philip A. NELSON, Hareo HAMADA, Stephen J. ELLIOTT

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Summary :

Inverse filters can be designed in order to enhance the accuracy with which signals recorded in a given space can be reproduced in a given listening space. The problem is considered here of the design of an inverse filter matrix which enables K recorded signals to be accurately reproduced at K points in the listening space when transmitted via M loudspeaker channels. The analysis is sufficiently general to incorporate the case when the best (least squares) approximation is sought to the reproduction of K signals at L points in the space when LK. An analysis is presented which demonstrates that the approach suggested by the Multiple-Input/Output Inverse Filtering theorem of Miyoshi and Kaneda can be realised adaptively by using the Multiple Error LMS algorithm of Elliott et al.

Publication
IEICE TRANSACTIONS on Fundamentals Vol.E75-A No.11 pp.1468-1473
Publication Date
1992/11/25
Publicized
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DOI
Type of Manuscript
Special Section PAPER (Special Section on Acoustic System Modeling and Signal Processing)
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