A multi-channel panning technique is presented, which aims at reproducing a plane wave with an array of loudspeakers. The loudspeaker gains are computed by solving an acoustical inverse problem. The latter involves the inversion of a matrix of transfer functions between the loudspeakers and the elements of a virtual microphone array, the center of which corresponds to the location of the listener. The radius of the virtual microphone array is varied consistently with the frequency, in such a way that the transfer function matrix is independent of the frequency. As a consequence, the inverse problem is solved for one frequency only, and the loudspeaker coefficients obtained can be implemented using simple gains.

Authors: Fazi, Filippo M.; Yamada, Toshiro; Kamdar, Suketu; Nelson, Philip A.; Otto, Peter
Affiliations: University of California at San Diego, La Jolla, CA, USA; University of Southampton, Southampton, UK(See document for exact affiliation information.)
AES Convention: 128 (May 2010) Paper Number: 8119
Publication Date: May 1, 2010
Subject: Multichannel and Spatial Audio

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