Limits of noise control over space

Thushara D. Abhayapala, Jihui Zhang, Prasanga Samarasinghe, Wen Zhang

科研成果: 书/报告/会议事项章节会议稿件同行评审

4 引用 (Scopus)

摘要

This paper investigates the best possible performance of noise cancellation over a region of space for a fixed set of secondary sources within a given acoustic environment. We first formulate the spatial active noise control (ANC) problem in a 3-D acoustic enclosure (room). Secondly, we derive a wave-domain least square method by matching the secondary sound field to the primary noise field in wave domain. Thirdly, we propose a subspace method by matching the secondary field coefficients to the projection of primary noise field in the subspace. Simulation results compare between the wave-domain least square method and the subspace method, in terms of energy of the loudspeaker driving signals, noise reduction inside the region, and residual noise field outside the region. The subspace matching method provides the limits of the ANC system for the given constraints and the acoustic characteristics of the room.

源语言英语
主期刊名Proceedings of the 23rd International Congress on Acoustics
主期刊副标题Integrating 4th EAA Euroregio 2019
编辑Martin Ochmann, Vorlander Michael, Janina Fels
出版商International Commission for Acoustics (ICA)
47-54
页数8
ISBN(电子版)9783939296157
DOI
出版状态已出版 - 2019
活动23rd International Congress on Acoustics: Integrating 4th EAA Euroregio, ICA 2019 - Aachen, 德国
期限: 9 9月 201923 9月 2019

出版系列

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

会议

会议23rd International Congress on Acoustics: Integrating 4th EAA Euroregio, ICA 2019
国家/地区德国
Aachen
时期9/09/1923/09/19

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