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|Title:||Spatial control of far-field structural sound radiation using structural sensors for broadband applications|
|Citation:||Proceedings, Australian Acoustical Society, New Zealand Acoustical Society : First Australasian Acoustical Societies' Conference : Acoustics 2006 : noise of progress, Clearwater Resort, Christchurch, New Zealand, 20-22 November 2006 / Terrance McMinn (ed.): pp. 25-30|
|Publisher:||New Zealand Acoustical Society|
|Publisher Place:||New Zealand|
|Conference Name:||Australasian Acoustical Societies' Conference (1st : 2006 : Christchurch, New Zealand)|
|Halim, D. and Cazzolato, B. S.|
|Abstract:||The focus of the paper is to control the far-field sound radiation from an arbitrary planar structure using multiple structural sensors, particularly for broadband applications. A number of structural velocity sensors are distributed over the structure for sensing the sound radiation at a particular far-field region for control purposes. Spatial control of structural sound radiation is achieved by constructing a frequency-independent spatial filter that reflects the spatially- weighted sound radiation energy. Thus, the signal produced by the spatial filter can be used as an error signal to be minimised by standard active control methods. A numerical case study on the sound radiation of a flat panel structure is performed to investigate the control performance using the developed frequency-independent spatial filter. Copyright © (2006) by the Australian Acoustical Society.|
|Appears in Collections:||Aurora harvest|
Environment Institute publications
Mechanical Engineering conference papers
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