An acoustical model for the sound field generated by hemi-cylindrical loudspeaker arrays is presented and a method for beamforming with said arrays is derived. The sound field model is obtained by introducing two independent boundary conditions for the sound field of a single impinging plane wave. The model for the radiation from a single loudspeaker in the array is then obtained from the reciprocity principle. Various beam patterns are presented and the theoretically predicted sound field is evaluated as a function of frequency. The results are discussed and an experimental array prototype is presented.

Authors: Hoffmann, Falk-Martin; Fazi, Filippo; Fontana, Simone
Affiliations: University of Southampton, Southampton, UK; Huawei European Research Centre, Munich, Germany(See document for exact affiliation information.)
AES Conference: 2016 AES International Conference on Sound Field Control (July 2016)
Paper Number: 4-1
Publication Date: July 14, 2016
Subject: Sound Field Control Theories

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