Personal audio with multiple dark zones
Personal audio with multiple dark zones
When one person is listening to audio reproduced using loudspeakers mounted in a headrest,
the leakage of sound to other people sat around them is of concern. This work considers
providing personal audio for the listener by use of a local array of acoustic sources driven in
such a way as to maintain the reproduced levels in the seat, in the so-called 'bright zone', whilst
minimising the levels experienced by others sat close by, in the so-called 'dark zones'. The
investigations carried out are an extension to previous work, which looked at maximising the
difference in levels between the bright zone, in the seat, and a single adjacent dark zone. Here
the problem of multiple dark zones leads to investigations into different geometrical
arrangements of the source array. It is shown that minimising the sound power radiated by the
local array while constraining the reproduced level in the bright zone is an effective method of
achieving isolation when the dark zones are numerous. The findings of the investigations are
used to design an optimal source arrangement, for which the isolation performance is verified
with BEM models.
8487985122
Sociedad Española de Acústica
Jones, Matthew
7aaa98e2-a8e3-4eaf-9034-669c48cb893f
Elliott, Stephen
721dc55c-8c3e-4895-b9c4-82f62abd3567
4 September 2007
Jones, Matthew
7aaa98e2-a8e3-4eaf-9034-669c48cb893f
Elliott, Stephen
721dc55c-8c3e-4895-b9c4-82f62abd3567
Jones, Matthew and Elliott, Stephen
(2007)
Personal audio with multiple dark zones.
Calvo-Manzano, Antonio, Pérez-López, Antonio and Santiago, Salvador
(eds.)
In 19th International Congress on Acoustics: Acoustics for the 21st Century.
Sociedad Española de Acústica.
6 pp
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
When one person is listening to audio reproduced using loudspeakers mounted in a headrest,
the leakage of sound to other people sat around them is of concern. This work considers
providing personal audio for the listener by use of a local array of acoustic sources driven in
such a way as to maintain the reproduced levels in the seat, in the so-called 'bright zone', whilst
minimising the levels experienced by others sat close by, in the so-called 'dark zones'. The
investigations carried out are an extension to previous work, which looked at maximising the
difference in levels between the bright zone, in the seat, and a single adjacent dark zone. Here
the problem of multiple dark zones leads to investigations into different geometrical
arrangements of the source array. It is shown that minimising the sound power radiated by the
local array while constraining the reproduced level in the bright zone is an effective method of
achieving isolation when the dark zones are numerous. The findings of the investigations are
used to design an optimal source arrangement, for which the isolation performance is verified
with BEM models.
Text
ele-01-004.pdf
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More information
Published date: 4 September 2007
Additional Information:
Paper ELE-01-004.
Venue - Dates:
19th International Congress on Acoustics: Acoustics for the 21st Century (ICA2007), Madrid, Spain, 2007-09-03 - 2007-09-07
Identifiers
Local EPrints ID: 50421
URI: http://eprints.soton.ac.uk/id/eprint/50421
ISBN: 8487985122
PURE UUID: 03be1951-3d72-404a-8a87-1c413ef2c31c
Catalogue record
Date deposited: 27 Feb 2008
Last modified: 15 Mar 2024 10:05
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Contributors
Author:
Matthew Jones
Editor:
Antonio Calvo-Manzano
Editor:
Antonio Pérez-López
Editor:
Salvador Santiago
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