Generation of half-space sound fields with application to personal sound systems


Poletti, Mark A. and Fazi, Filippo M. (2016) Generation of half-space sound fields with application to personal sound systems Journal of the Acoustical Society of America, 139, (3), pp. 1294-1302. (doi:10.1121/1.4944671).

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Description/Abstract

A method is presented for generating a sound field that is significantly attenuated over half of the reproduction region, which has application to the generation of two independent sound fields for two listeners. The half-space sound field is produced by attenuating the negative or positive modes in the cylindrical or spherical expansion of a plane wave or point source sound field. It is shown that this is equivalent to adding to the original sound field, in quadrature, a second field which is the Hilbert transform of the original field. The resulting analytic field has a small magnitude in one half of the plane. Methods are presented for controlling the attenuation in the unwanted half-space. Finally, a simulation is presented showing the generation of a wideband pulse that propagates across half of the area within a circular array of sources.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1121/1.4944671
ISSNs: 0001-4966 (print)
Organisations: Acoustics Group
ePrint ID: 399740
Date :
Date Event
10 March 2016Accepted/In Press
24 March 2016e-pub ahead of print
Date Deposited: 25 Aug 2016 10:54
Last Modified: 17 Apr 2017 01:47
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/399740

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