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Artificial Reduction of Wind Tunnel Background Noise in Vehicle Wind Noise Testing
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Abstract
Vehicle wind noise testing is usually done at elaborate tunnel facilities with minimal tunnel background noise, Techniques to reduce the tunnel noise, such as acoustic panels or improved fan systems, translate into higher costs for wind noise testing. We introduce an innovative procedure using an adaptive filtering algorithm to separate the tunnel noise from the wind noise inside the cabin of the vehicle. This new technique is capable of artificially reducing the tunnel background noise at low frequencies. Such a procedure has the potential to dramatically improve the wind noise testing capability of any wind tunnel, without the need for costly acoustic treatments.
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Hofmann, L., Bouzit, D., Murawski, K., Hsueh, K. et al., "Artificial Reduction of Wind Tunnel Background Noise in Vehicle Wind Noise Testing," SAE Technical Paper 980390, 1998, https://doi.org/10.4271/980390.Also In
References
- Alfredson R. J. The Partial Coherence Technique for Source Identification on a Diesel Engine Journal of Sound and Vibration 55 4 1977
- Bagiasna K. Arismunandar W. Wijana W. Coherence Method for Noise Analysis of Multi-Reduction Gear Box Proceedings of the Fourth International Pacific Conference on Automotive Engineering Melbourne, Australia November 1987
- Bendat J. S. Modern Analysis Procedures for Multiple Input/Output Problems Journal of the Acoustical Society of America 68 2 1980
- George A. R. Automobile Wind Noise and Its Measurement Society of Automotive Engineers SP 1184 1996
- Hsueh K. D. Hollingsworth L. D. Lee G. Chen Y. Murawksi K. W. Haffey M. P. Application of a time domain approach to adaptive separation/synthesis of automobile cabin noise Journal of the Acoustical Societies of America 100 4 October 1996
- Hsueh K. D. Lee G. Hollingsworth L. D. Method and Apparatus for Extracting a Component Signal from a Composite Signal 1996
- Pankhurst R. C. Holder D. W. Wind-Tunnel Technique 1951
- Peterson A. P. G. Handbook of Noise and Measurement 1980