Modal analysis for global control of broadband noise in a rectangular enclosure

Montazeri, Allahyar and Poshtan, Javad and Kahaei, Mohammad Hossein (2007) Modal analysis for global control of broadband noise in a rectangular enclosure. Low Frequency Noise, Vibration and Active Control, 26 (2). pp. 91-104. ISSN 0263-0923

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Abstract

Modal analysis for examination of the possibility of the global reduction of broadband noise in a rectangular enclosure has been studied in this paper. By developing a modal model of the acoustic environment of the enclosure the shape modes and their frequencies are obtained and on suitable bandwidth for the controller design is calculated. In order to simplify the analysis the noise sources are assumed localized and internal in one corner of the kiosk. The analysis results show that due to the existence of some degenerate modes in this application, the control action is complicated. Simulation results demonstrate how positions and number of loudspeakers and microphones will change the performance of the controller and its corresponding control effort. Based on these results and analysis a reasonable size for the controller and proper locations for sensors and actuators are proposed. Simulation results also confirm the effectiveness of the proposed system in reduction of the acoustic potential energy in the kiosk.

Item Type:
Journal Article
Journal or Publication Title:
Low Frequency Noise, Vibration and Active Control
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2700
Subjects:
ID Code:
65704
Deposited By:
Deposited On:
15 Jul 2013 10:12
Refereed?:
Yes
Published?:
Published
Last Modified:
23 Jan 2020 02:02