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Maximization of acoustic energy difference between two spaces

Shin, M., Lee, S.Q., Fazi, F.M., Nelson, P.A., Kim, D., Wang, S., Park, J. and Seo, J. (2010) Maximization of acoustic energy difference between two spaces Journal of the Acoustical Society of America, 128, (1), pp. 121-131. (doi:10.1121/1.3438479).

Record type: Article


There has recently been an increasing interest in the generation of a sound field that is audible in one spatial region and inaudible in an adjacent region. The method proposed here ensures the control of the amplitude and phase of multiple acoustic sources in order to maximize the acoustic energy difference between two adjacent regions while also ensuring that evenly distributed source strengths are used. The performance of the method proposed is evaluated by computer simulations and experiments with real loudspeaker arrays in the shape of a circle and a sphere. The proposed method gives an improvement in the efficiency of radiation into the space in which the sound should be audible, while maintaining the acoustic pressure difference between two acoustic spaces. This is shown to give an improvement of performance compared to the contrast control method previously proposed

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Published date: June 2010
Organisations: Inst. Sound & Vibration Research, Fluid Dynamics & Acoustics Group


Local EPrints ID: 151327
ISSN: 0001-4966
PURE UUID: 8355d044-9190-4598-98d3-7ac20f3eaafc

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Date deposited: 10 May 2010 13:06
Last modified: 18 Jul 2017 12:55

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Author: M. Shin
Author: S.Q. Lee
Author: F.M. Fazi
Author: P.A. Nelson
Author: D. Kim
Author: S. Wang
Author: J. Park
Author: J. Seo

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