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http://dx.doi.org/10.5050/KSNVE.2015.25.12.888

Modeling and Simulation of Road Noise by Using an Autoregressive Model  

Kook, Hyung-Seok (Department of Automotive Engineering, Kookmin University)
Ih, Kang-Duck (Hyundai Motor Company)
Kim, Hyoung-Gun (Hyundai Motor Company)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.25, no.12, 2015 , pp. 888-894 More about this Journal
Abstract
A new method for the simulation of the vehicle's interior road noise is proposed in the present study. The road noise model can synthesize road noise of a vehicle for varying driving speed within a range. In the proposed method, interior road noise is considered as a stochastic time-series, and is modeled by a nonstationary parametric model via two steps. First, each interior road noise signal, obtained from constant speed driving tests performed within a range of speed, is modeled as an autoregressive model whose parameters are estimated by using a standard method. Finally, the parameters obtained for different driving speeds are interpolated based on the varying driving speed to yield a time-varying autoregressive model. To model a full band road noise, audible frequency range is divided into an octave band using a wavelet filter bank, and the road noise in each octave band is modeled.
Keywords
Road Noise Simulation; NVH Simulator; Nonstationary Parametric Model; Wavelet Filter Bank; Stochastic Time-series;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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