Today flat panel loudspeakers are used in multiple applications. Due to their high directivity and their good structural integration properties, flat panel loudspeakers are commonly used for directed acoustic information. A previously proposed system of 2 parallel flat panel dipole loudspeakers with adapted input filtering ensures a high suppression of the backward radiation and only minor influences to the forward radiation side. This paper presents a new approach to the filter computation for this application. It makes use of the time domain convolution, realized by Toeplitz matrices and builds the desired filter impulse responses by a least squares approach. The different filter computations as well as the numerical and measured results are shown.

Authors: Corbach, Tobias; Holters, Martin; Zölzer, Udo
Affiliation: Helmut-Schmidt-University/University of the Federal Armed Forces, Hamburg, Germany
AES Convention: 129 (November 2010) Paper Number: 8262
Publication Date: November 4, 2010
Subject: Real-Time Audio Processing

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