An approach to generating two zones of silence with application to personal sound systems


Poletti, Marc A. (2015) An approach to generating two zones of silence with application to personal sound systems Journal of the Acoustical Society of America, 137, (2), pp. 598-605. (doi:10.1121/1.4906582).

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Description/Abstract

An application of current interest in sound reproduction systems is the creation of multizone sound fields which produce multiple independent sound fields for multiple listeners. The challenge in producing such sound fields is the avoidance of interference between sound zones, which is dependent on the geometry of the zone and the direction of arrival of the desired sound fields. This paper provides a theoretical basis for the generation of two zones based on the creation of sound fields with nulls and the positioning of those nulls at arbitrary positions. The nulls are created by suppressing low-order mode terms in the sound field expansion. Simulations are presented for the two-dimensional case which shows that suppression of interference is possible across a broad frequency audio range.

Item Type: Article
Digital Object Identifier (DOI): doi:10.1121/1.4906582
ISSNs: 0001-4966 (print)
Subjects: Q Science > QC Physics
Organisations: Acoustics Group
ePrint ID: 374624
Date :
Date Event
14 January 2015Accepted/In Press
February 2015Published
Date Deposited: 25 Feb 2015 15:05
Last Modified: 17 Apr 2017 06:38
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/374624

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