Personal audio systems generate a local sound field for a listener while attenuating the sound energy at pre-defined quiet zones. Their performance can be sensitive to errors in the acoustic transfer functions between the sources and the zones. In this paper, we model the loudspeakers as a superposition of multipoles with a term to describe errors in the actual gain and phase. We then propose a design framework for robust reproduction, incorporating additional prior knowledge about the error distribution where available. We combine acoustic contrast control with worst-case and probability-model optimization, exploiting knowledge of the error distribution. Monte-Carlo simulations over 10000 test cases show that the method increases system robustness when errors are present in the assumed transfer functions.

Authors: Zhu, Qiaoxi; Coleman, Philip; Wu, Ming; Yang, Jun
Affiliations: Chinese Academy of Sciences, Beijing, China; University of Surrey, Guildford, UK(See document for exact affiliation information.)
AES Conference: 2016 AES International Conference on Sound Field Control (July 2016)
Paper Number: 1-4
Publication Date: July 14, 2016 Import into BibTeX
Subject: Sound Zones
Permalink: https://www.aes.org/e-lib/browse.cfm?elib=18324

Click to purchase paper as a non-member or login as an AES member. If your company or school subscribes to the E-Library then switch to the institutional version. If you are not an AES member and would like to subscribe to the E-Library then Join the AES!

This paper costs $33 for non-members and is free for AES members and E-Library subscribers.

Learn more about the AES E-Library

E-Library Location: (CD 2016sfcPapers)   /conf/2016/sfc/paper_30.pdf

Start a discussion about this paper!