Dynamic local sound field synthesis with multi-channel 1-bit signal reproduction system

Kakeru Kurokawa, Izumi Tsunokuni, Yusuke Ikeda, Yasuhiro Oikawa

研究成果: Conference contribution

抄録

To reproduce sound field accurately, local sound field synthesis(Local SFS) with virtual loudspeakers that are placed densely around a local listening area have been proposed. In local SFS, it is necessary to limit the size of the listening area. Thus, a listener's head can move out of a listening area due to the natural movement of the listener. In this paper, we propose the concept of a dynamic sound field synthesis system which can moves the sound field synthesis area so as to track the listener's head to allow the listener's movement. For the purpose of facilitating the construction of the massive loudspeaker system in an ordinary room, we utilize a playback system based on a high-speed 1-bit signal that can directly drive a loudspeaker. The proposed system can move the listening area by switching the corresponding local SFS signals obtained from the database including the source signals convolved with the driving functions to reproduce the multiple local area. In simulation experiments, reproduction errors of dynamic local and ordinary SFSs for a plane wave are compared to evaluate the accuracy of sound field by dynamic local SFS.

本文言語English
ホスト出版物のタイトルProceedings of the 23rd International Congress on Acoustics
ホスト出版物のサブタイトルIntegrating 4th EAA Euroregio 2019
編集者Martin Ochmann, Vorlander Michael, Janina Fels
出版社International Commission for Acoustics (ICA)
ページ3071-3076
ページ数6
ISBN(電子版)9783939296157
DOI
出版ステータスPublished - 2019
イベント23rd International Congress on Acoustics: Integrating 4th EAA Euroregio, ICA 2019 - Aachen, Germany
継続期間: 2019 9 92019 9 23

出版物シリーズ

名前Proceedings of the International Congress on Acoustics
2019-September
ISSN(印刷版)2226-7808
ISSN(電子版)2415-1599

Conference

Conference23rd International Congress on Acoustics: Integrating 4th EAA Euroregio, ICA 2019
国/地域Germany
CityAachen
Period19/9/919/9/23

ASJC Scopus subject areas

  • 機械工学
  • 音響学および超音波学

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