A theory of smart loudspeaker arrays is described where a modified Fourier technique yields complex filter coefficients to determine the broad-band radiation characteristics of a uniform array of micro drive units. Beamwidth and direction are individually programmable over a 180° arc, where multiple agile and steerable beams carrying dissimilar signals can be accommodated. A novel method of stochastic filter design is also presented, which endows the directional array with diffuse radiation properties.

Author: Hawksford, Malcolm J.
Affiliation: Centre for Audio Research and Engineering, University of Essex, Colchester, UK
JAES Volume 51 Issue 12 pp. 1133-1162; December 2003
Publication Date: December 15, 2003

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