Loudspeaker arrays for family TV
Loudspeaker arrays for family TV
As the hearing capabilities of humans are degraded with age, it becomes more difficult for people of different ages to enjoy television together, as they need different audio volumes. A 60 years old person needs a 10 dB boost at high frequencies, on average, in order to be able to listen properly. This paper describes an approach to obtain this boost. A line array using 8 phase-shift sources has been designed and constructed. This array produces a boost of 10 dB in a narrow spatial zone, where the person with the hearing loss is placed. The response in other directions is minimized to reduce the excitation of the reverberant field in the room, with the phase-shift sources controlling the radiation to the rear of the array. Free field simulations were used to design the array and also investigate various algorithms for the broad band reproduction of the audio signal. The real-time performance of the experimental array was then tested in free field and realistic environmental conditions.
International Institute of Acoustics and Vibration
Simón Gálvez, Marcos
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Elliott, Stephen J.
721dc55c-8c3e-4895-b9c4-82f62abd3567
Cheer, Jordan
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10 July 2012
Simón Gálvez, Marcos
f9bbdbec-8d90-448f-b41a-8e74a972b963
Elliott, Stephen J.
721dc55c-8c3e-4895-b9c4-82f62abd3567
Cheer, Jordan
8e452f50-4c7d-4d4e-913a-34015e99b9dc
Simón Gálvez, Marcos, Elliott, Stephen J. and Cheer, Jordan
(2012)
Loudspeaker arrays for family TV.
In Proceedings of the 19th International Congress on Sound and Vibration.
International Institute of Acoustics and Vibration..
Record type:
Conference or Workshop Item
(Paper)
Abstract
As the hearing capabilities of humans are degraded with age, it becomes more difficult for people of different ages to enjoy television together, as they need different audio volumes. A 60 years old person needs a 10 dB boost at high frequencies, on average, in order to be able to listen properly. This paper describes an approach to obtain this boost. A line array using 8 phase-shift sources has been designed and constructed. This array produces a boost of 10 dB in a narrow spatial zone, where the person with the hearing loss is placed. The response in other directions is minimized to reduce the excitation of the reverberant field in the room, with the phase-shift sources controlling the radiation to the rear of the array. Free field simulations were used to design the array and also investigate various algorithms for the broad band reproduction of the audio signal. The real-time performance of the experimental array was then tested in free field and realistic environmental conditions.
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LOUDSPEAKER ARRAYS FOR FAMILY TV.pdf
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Published date: 10 July 2012
Venue - Dates:
19th International Congress on Sound and Vibration, Vilnius, Lithuania, 2012-07-08 - 2012-07-12
Organisations:
Signal Processing & Control Grp
Identifiers
Local EPrints ID: 352694
URI: http://eprints.soton.ac.uk/id/eprint/352694
PURE UUID: c05a6e9b-e356-4810-ab38-a169b7f02f64
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Date deposited: 21 May 2013 08:20
Last modified: 15 Mar 2024 03:37
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Author:
Marcos Simón Gálvez
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