Control of acoustic radiation pattern in a dual-dipole array

Shin, Mincheol and Nelson, Philip A. (2009) Control of acoustic radiation pattern in a dual-dipole array. In 127th Audio Engineering Society Convention 2009. vol. 1, Acoustical Society of America. pp. 423-430 .

Record type: Conference or Workshop Item (Paper)

Abstract

This paper proposes a control strategy for generating various acoustic radiation patterns associated with a "personalized sound field" using an acoustic source array. A dual-dipole array, which models each loudspeaker as an imperfect dipole and a source signal control algorithm, which effectively considers both energy difference maximization and radiation efficiency are introduced in order to obtain better radiation patterns for generating the desired sound field. With the proposed dual dipole array and control algorithm, a wide controllability from a comparatively low to a high frequency range is obtained, although the array size is small enough to implement in mobile applications. The conceptually novel control strategy proposed enables efficient cancellation of the backward radiation. The performance of the dual dipole source array is verified by using computer simulations.

This record has no associated files available for download.