Noise source localisation in a car environment
Fazenda, BM, Gu, F, Ball, A and Guan, L 2009, Noise source localisation in a car environment , in: 8th International Conference on Damage Assessment of Structures, 3-5 August 2009, Beijing.
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Spurious noise (rattles, squeaks, etc) in the interior of car cabinets can be annoying, distractive and indicative of potential performance problems. Fault finding these problems can be difficult since the fault is intermittent and may not necessarily happen under test conditions. A 3 channel system that can record the fault and indicate its location within the cabinet is presented here. The system consists of a coincident microphone array that measures acoustic particle velocity along two orthogonal axes at its location. Detection and direction of noise can be obtained in real time or during post-processing using advanced signal analysis methods. Measurements inside a vehicle show that the very reflective nature of the sound-filed inside a car cabinet present a major challenge and that a combination of advance techniques from diagnostics engineering and room acoustics are required to reliably indicate the direction of the annoying sound.
|Item Type:||Conference or Workshop Item (Paper)|
|Themes:||Subjects / Themes > Q Science > QC Physics > QC221-246 Acoustics - Sound|
Subjects outside of the University Themes
|Schools:||Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering|
Colleges and Schools > College of Science & Technology
Colleges and Schools > College of Science & Technology > School of Computing, Science and Engineering > Acoustics Research Centre
|Journal or Publication Title:||Proceedings of 8th International Conference on Damage Assessment of Structures|
|Depositing User:||BM Fazenda|
|Date Deposited:||08 Jul 2010 16:39|
|Last Modified:||27 Sep 2011 12:13|
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