Control of the acoustic radiation pattern for a personalised sound field using an optimized acoustic dual dipole model

Shin, Mincheol, Nelson, Philip A., Lee, Sung Q., Kim, Hye Jin, Lee, Hong Yeol and Park, Kang Ho (2009) Control of the acoustic radiation pattern for a personalised sound field using an optimized acoustic dual dipole model. Bolton, Stuart (ed.) In 38th International Congress and Exposition on Noise Control Engineering 2009, INTER-NOISE 2009. vol. 3, Canadian Acoustical Association. pp. 1798-1806 .

Abstract

A control strategy is introduced to manage the acoustic radiation pattern of two small-size loudspeakers used in small-size audio devices. Each loudspeaker is modeled as an imperfect dipole which has a slight irregularity that represents the introduced loudspeaker. An efficient source control method, acoustic energy difference maximization, is applied to obtain a radiation pattern for a personalised sound area with the proposed model. The dipole irregularities are also optimized in order to obtain a better radiation pattern. This paper shows the feasibility of practical implementation for the generation of a personalised sound area with just two stacked miniature loudspeakers.

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Contributors

Author: Philip A. Nelson

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