期刊
APPLIED SCIENCES-BASEL
卷 12, 期 4, 页码 -出版社
MDPI
DOI: 10.3390/app12042244
关键词
multichannel active noise control (ANC); acoustic design; signal processing
类别
资金
- Frontier Exploration Project Independently Deployed by Institute of Acoustics, Chinese Academy of Sciences [QYTS202009]
- National Natural Science Foundation of China [61901174]
- Guangdong Basic and Applied Basic Research Foundation [2019A1515010771]
- State Key Laboratory of Mechanical System and Vibration [MSV202202]
This paper discusses the important factors and control strategies for multichannel active noise control (ANC) systems in applications such as windows and quiet zones around heads. It emphasizes the impact of acoustic design on system performance and provides practical guidance.
Active noise control (ANC) systems usually involve a large number of loudspeakers and error microphones in order to achieve noise reduction over an extended region of space. Although fundamentals of ANC theory and principles of ANC methods have been well-established over the past 40 years, applications of this technology are facing new challenges. A larger quiet zone with better noise reduction performance is always desirable in a variety of real-life scenarios. This paper presents several important factors that affect the performance of multichannel ANC systems in some popular applications such as windows with natural ventilation and quiet-zone around heads. The factors affecting acoustic design include the reflection of a baffle plate, arrangement of error sensors in open areas, and so on. In addition, different control strategies are compared and analyzed, including centralized, decentralized, and distributed strategies. All these strategies are discussed from the signal processing side, which should be considered after a proper acoustic design. One of the important aims of this paper is to provide practical guidance for acoustic design and discuss several typical control strategies for multichannel ANC systems.
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