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Open loop active control of noise through open windows

Open loop active control of noise through open windows
Open loop active control of noise through open windows
Noise propagating through open windows raises one major concern of livability in metropolises, where residential buildings and arterial roads are densely constructed. Active noise control (ANC) is a possible technique to improve the current situation. Usually, ANC systems adopt the closed-loop control, where the quietness after control is continuously monitored by error microphones. However, ANC systems that attenuate noise propagating through open windows should ideally avoid the use of error microphones for the ease of implementation and maintenance. Furthermore, as open windows are commonly larger than the wavelength of the incident noise, multichannel ANC systems are necessary. Therefore, they result in computational burdens that cannot be handled by low-cost hardware platforms. This paper formulates the ANC system for open windows as a spatial sampling and reconstruction problem, and demonstrates that controlling noise propagating through open windows leads to global reduction of noise levels in the room. Both centralized and decentralized open-loop control filters are feasible in dealing with broad-band noise frequencies.
1939-800X
Shi, Chuang
c46f72bd-54c7-45ee-ac5d-285691fccf81
Murao, Tatsuya
a78fa067-b534-46dc-96b4-e2ab1f70c01e
Shi, Dongyuan
20b1a768-6034-462a-a9c1-6c6a7a643650
Lam, Bhan
4893e8db-452b-4fbc-a5a8-26a26d786bfe
Gan, Woon-Seng
1936c59c-0552-498c-86a4-20bb81bb561a
Shi, Chuang
c46f72bd-54c7-45ee-ac5d-285691fccf81
Murao, Tatsuya
a78fa067-b534-46dc-96b4-e2ab1f70c01e
Shi, Dongyuan
20b1a768-6034-462a-a9c1-6c6a7a643650
Lam, Bhan
4893e8db-452b-4fbc-a5a8-26a26d786bfe
Gan, Woon-Seng
1936c59c-0552-498c-86a4-20bb81bb561a

Shi, Chuang, Murao, Tatsuya, Shi, Dongyuan, Lam, Bhan and Gan, Woon-Seng (2017) Open loop active control of noise through open windows. Proceedings of Meetings on Acoustics, 29 (1). (doi:10.1121/2.0000461).

Record type: Article

Abstract

Noise propagating through open windows raises one major concern of livability in metropolises, where residential buildings and arterial roads are densely constructed. Active noise control (ANC) is a possible technique to improve the current situation. Usually, ANC systems adopt the closed-loop control, where the quietness after control is continuously monitored by error microphones. However, ANC systems that attenuate noise propagating through open windows should ideally avoid the use of error microphones for the ease of implementation and maintenance. Furthermore, as open windows are commonly larger than the wavelength of the incident noise, multichannel ANC systems are necessary. Therefore, they result in computational burdens that cannot be handled by low-cost hardware platforms. This paper formulates the ANC system for open windows as a spatial sampling and reconstruction problem, and demonstrates that controlling noise propagating through open windows leads to global reduction of noise levels in the room. Both centralized and decentralized open-loop control filters are feasible in dealing with broad-band noise frequencies.

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Published date: 12 July 2017

Identifiers

Local EPrints ID: 484411
URI: http://eprints.soton.ac.uk/id/eprint/484411
ISSN: 1939-800X
PURE UUID: 037c5a08-9dfe-414e-99a7-003a03d24bad
ORCID for Chuang Shi: ORCID iD orcid.org/0000-0002-1517-2775

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Date deposited: 16 Nov 2023 11:54
Last modified: 15 May 2024 02:07

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Contributors

Author: Chuang Shi ORCID iD
Author: Tatsuya Murao
Author: Dongyuan Shi
Author: Bhan Lam
Author: Woon-Seng Gan

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