A method to improve the quality of an audio signal reproduced by a compact loudspeaker array in a private sound zone
A method to improve the quality of an audio signal reproduced by a compact loudspeaker array in a private sound zone
Private sound zones can be generated using loudspeaker arrays and methods for beamforming. This paper addresses the problem of quality degradation of the reproduced field at the listener’s position, especially in terms of deviation from the desired frequency response. A method is proposed that aims to accurately reproduce a desired signal at the listener’s position while minimizing the acoustic energy density in the so-called quiet zones. This method is compared against the Delay-and-Sum beamformer and the Pressure-Matching Method by means of numerical simulations under free-field conditions. Results show that the proposed method allows for accurate reconstruction of the signal at the listener’s position. The effects on the directivity of the array radiation pattern are analyzed and discussed.
Olivieri, Ferdinando
02d11b82-4e34-441f-9e04-60fb117d6617
Fazi, Filippo Maria
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Shin, Mincheol
2c911163-f027-4c79-8a7b-368f326c46e7
Nelson, Philip Arthur
5c6f5cc9-ea52-4fe2-9edf-05d696b0c1a9
Fontana, Simone
c194e2f4-0677-4189-bb7b-f0b171a89f6a
Yue, Lang
694cb09d-e796-4ed5-bdcf-f8b304451ad4
July 2015
Olivieri, Ferdinando
02d11b82-4e34-441f-9e04-60fb117d6617
Fazi, Filippo Maria
e5aefc08-ab45-47c1-ad69-c3f12d07d807
Shin, Mincheol
2c911163-f027-4c79-8a7b-368f326c46e7
Nelson, Philip Arthur
5c6f5cc9-ea52-4fe2-9edf-05d696b0c1a9
Fontana, Simone
c194e2f4-0677-4189-bb7b-f0b171a89f6a
Yue, Lang
694cb09d-e796-4ed5-bdcf-f8b304451ad4
Olivieri, Ferdinando, Fazi, Filippo Maria, Shin, Mincheol, Nelson, Philip Arthur, Fontana, Simone and Yue, Lang
(2015)
A method to improve the quality of an audio signal reproduced by a compact loudspeaker array in a private sound zone.
22nd International Congress on Sound and Vibration (ICSV22), Florence, Italy.
12 - 16 Jul 2015.
Record type:
Conference or Workshop Item
(Other)
Abstract
Private sound zones can be generated using loudspeaker arrays and methods for beamforming. This paper addresses the problem of quality degradation of the reproduced field at the listener’s position, especially in terms of deviation from the desired frequency response. A method is proposed that aims to accurately reproduce a desired signal at the listener’s position while minimizing the acoustic energy density in the so-called quiet zones. This method is compared against the Delay-and-Sum beamformer and the Pressure-Matching Method by means of numerical simulations under free-field conditions. Results show that the proposed method allows for accurate reconstruction of the signal at the listener’s position. The effects on the directivity of the array radiation pattern are analyzed and discussed.
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Published date: July 2015
Venue - Dates:
22nd International Congress on Sound and Vibration (ICSV22), Florence, Italy, 2015-07-12 - 2015-07-16
Organisations:
Acoustics Group
Identifiers
Local EPrints ID: 379499
URI: http://eprints.soton.ac.uk/id/eprint/379499
PURE UUID: 46e95d56-a4f9-4765-ba50-dfb02ce80541
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Date deposited: 31 Jul 2015 14:13
Last modified: 02 Sep 2023 01:41
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Contributors
Author:
Ferdinando Olivieri
Author:
Mincheol Shin
Author:
Simone Fontana
Author:
Lang Yue
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