A method to improve the quality of an audio signal reproduced by a compact loudspeaker array in a private sound zone


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 At 22nd International Congress on Sound and Vibration (ICSV22), Italy. 12 - 16 Jul 2015.

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Description/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 pro- posed that aims to accurately reproduce a desired signal at the listener’s position while minimiz- ing 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 sim- ulations 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.

Item Type: Conference or Workshop Item (Other)
Venue - Dates: 22nd International Congress on Sound and Vibration (ICSV22), Italy, 2015-07-12 - 2015-07-16
Related URLs:
Subjects: Q Science > QC Physics
T Technology > TK Electrical engineering. Electronics Nuclear engineering
Organisations: Acoustics Group
ePrint ID: 379499
Date :
Date Event
July 2015Published
Date Deposited: 31 Jul 2015 14:13
Last Modified: 17 Apr 2017 05:35
Further Information:Google Scholar
URI: http://eprints.soton.ac.uk/id/eprint/379499

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