An approach to generating two zones of silence with application to personal sound systems
An approach to generating two zones of silence with application to personal sound systems
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.
598-605
Poletti, Marc A.
e5aefc08-ab45-47c1-ad69-c3f12d07d807
Fazi, Filippo
e5aefc08-ab45-47c1-ad69-c3f12d07d807
February 2015
Poletti, Marc A.
e5aefc08-ab45-47c1-ad69-c3f12d07d807
Fazi, Filippo
e5aefc08-ab45-47c1-ad69-c3f12d07d807
Poletti, Marc A. and Fazi, Filippo
(2015)
An approach to generating two zones of silence with application to personal sound systems.
Journal of the Acoustical Society of America, 137 (2), .
(doi:10.1121/1.4906582).
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.
Text
Single_zone_multizone_Last.pdf
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Accepted/In Press date: 14 January 2015
Published date: February 2015
Organisations:
Acoustics Group
Identifiers
Local EPrints ID: 374624
URI: http://eprints.soton.ac.uk/id/eprint/374624
ISSN: 0001-4966
PURE UUID: f2c1d6a7-7213-453a-b20d-bb3d78725223
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Date deposited: 25 Feb 2015 15:05
Last modified: 15 Mar 2024 03:32
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