A general approach is presented to the design of inverse filters used in multi-channel sound reproduction systems. The formulation of the problem is cast within a traditional least-squares framework. Algorithms are presented which enable the rapid adaptation on inverse filters in response to measurements made in the reproduced sound field. Computer simulations are used to illustrate the potential for using an inverse filter matrix to manipulate the position of stereophonic images. The possibilities suggested could be used in conjunction with existing stereophonic recordings in order to improve stereophonic imaging in situations where the relative locations of loudspeakers and listener are constrained to be non-ideal.

Authors: Nelson, Philip A.; Orduña-Bustamante, Felipe; Hamada, Hareo
Affiliations: Institute of Sound and Vibration Research, The University, Southampton, UK ; Department of Electrical Communication Engineering, Tokyo Denki University, Tokyo, Japan(See document for exact affiliation information.)
AES Conference: UK 7th Conference: Digital Signal Processing (DSP) (September 1992)
Paper Number: DSP-13
Publication Date: September 1, 1992
Subject: Digital Signal Processing

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