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Application of Circular Microphone Array for Visualization of Noise Sources on Off-Highway Vehicles
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English
Abstract
In the automotive and off-highway industries, identification of noise sources is essential in lowering vehicle drive-by noise levels. Thanks to low cost acoustics sensors available nowadays, large amount of spatial sound data can be obtained simultaneously from a circular array of microphones in a very short period of time. Signal processing techniques are applied to identify the location of noise sources. Such techniques are useful for identifying various noise sources such as tire noise [1]. The study in this paper uses a circular microphone array to identify noise sources near the cooling system on a farm tractor.
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Citation
Wu, H. and Wang, P., "Application of Circular Microphone Array for Visualization of Noise Sources on Off-Highway Vehicles," SAE Technical Paper 952118, 1995, https://doi.org/10.4271/952118.Also In
References
- “Source Identification Using Acoustic Array Techniques,” Dumbacher, S.M. Blough, J.R. Hallman, D.L. Wang P.F. SAE Noise and Vibration Conference Traverse City 1995
- “Cross-correlation Analysis for Noise Source Location Using Microphone Arrays,” Zimmerman, R. Brown, D.L. Morse I.E. Proceedings of Internoise San Francisco 923 930 1978
- “Spatial Localization of Sound Sources, Based on Measurements of Cross-Correlation Functions,” Mas, P. Sas P. Proceedings of 3rd International Conference on Structure-Borne and Air-Borne Noise and Vibration Montreal 1994