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Evaluation System for Simulating and Reducing Interior Noise Caused by Wind
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 01, 2014 by SAE International in United States
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Fluctuation in the sound pressure level of the interior noise of an on-road vehicle is always caused by unpredictable factors such as wind gusts, traffic, roadside obstacles, and changing drive-by-drive conditions, and is hence, not reproducible in nature. Since the human brain is known to be more sensitive to noise that is amplitude-modulated than noise at a steady level , it is important to evaluate and improve the NVH performance of a vehicle in terms of the fluctuating interior noise likely to be experienced by drivers or users. To this end, an evaluation system was developed as part of this study, the details of which are presented in this paper. The system is composed of hardware for database storage and replay of sounds, and software for synthesizing the noise signals. For given wind tunnel test results, the evaluation system yields a wind noise model that can synthesize wind noise signals for any wind scenario. Additionally, the road and engine noise components can be extracted from proving ground or real road tests.
CitationHong, J., Kook, H., Ih, K., and Kim, H., "Evaluation System for Simulating and Reducing Interior Noise Caused by Wind," SAE Technical Paper 2014-01-0038, 2014, https://doi.org/10.4271/2014-01-0038.
- Zwicker, E., and Fastl, H., Psychoacoustics: Facts and Models, 2nd ed. Heidelberg, Germany: Springer, 1999.
- Lindener, N., Miehling, H., Cogotti, A., Cogotti, F. et al., “Aeroacoustic Measurements in Turbulent Flow on the Road and in the Wind Tunnel,” SAE Technical Paper 2007-01-1551, 2007, doi:10.4271/2007-01-1551.
- Wordley, S. and Saunders, J., “On-road Turbulence,” SAE Int. J. Passeng. Cars - Mech. Syst. 1(1):341-360, 2009, doi:10.4271/2008-01-0475.