Evaluation System for Simulating and Reducing Interior Noise Caused by Wind

2014-01-0038

04/01/2014

Event
SAE 2014 World Congress & Exhibition
Authors Abstract
Content
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 [1], 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.
Meta TagsDetails
DOI
https://doi.org/10.4271/2014-01-0038
Pages
4
Citation
Hong, 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.
Additional Details
Publisher
Published
Apr 1, 2014
Product Code
2014-01-0038
Content Type
Technical Paper
Language
English