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A comparison between two modal domain methods for personal audio reproduction

Zhu, Qiaoxi, Qiu, Xiaojun, Coleman, Philip and Burnett, Ian (2020) A comparison between two modal domain methods for personal audio reproduction Journal of the Acoustical Society of America, 147 (1). pp. 161-173.

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Personal audio provides private and personalized listening experiences by generating sound zones in a shared space with minimal interference between zones. One challenge of the design is to achieve the best performance with a limited number of microphones and loudspeakers. In this paper, two modal domain methods for personal audio reproduction are compared. One is the spatial harmonic decomposition (SHD) based method and the other is the singular value decomposition (SVD) based method. It is demonstrated that the SVD based method provides a more efficient modal domain decomposition than the SHD method for 2.5 dimensional personal audio design. Simulation results show that the SVD based method outperforms the SHD one by up to 10 dB in terms of acoustic contrast and up to 17 dB in terms of reproduction error for a compact arc array with five loudspeakers, while requiring fewer microphones around the zone boundaries. The SVD based method retains the inherent efficiency of optimizing in a modal domain while avoiding the inherent geometric limitations of using SHD basis functions. Thus, this approach is advantageous for applications with flexible system geometries and a small number of loudspeakers and microphones.

Item Type: Article
Divisions : Faculty of Arts and Social Sciences > Department of Music and Media
Authors :
Zhu, Qiaoxi
Qiu, Xiaojun
Burnett, Ian
Date : 21 January 2020
DOI : 10.1121/10.0000474
Copyright Disclaimer : Copyright © 2020, Acoustical Society of America
Depositing User : James Marshall
Date Deposited : 03 Feb 2020 11:50
Last Modified : 22 Jul 2020 02:08

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