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Modeling and Simulation of Road Noise by Using an Autoregressive Model
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 Title & Authors
Modeling and Simulation of Road Noise by Using an Autoregressive Model
Kook, Hyung-Seok; Ih, Kang-Duck; Kim, Hyoung-Gun;
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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.
Road Noise Simulation;NVH Simulator;Nonstationary Parametric Model;Wavelet Filter Bank;Stochastic Time-series;
 Cited by
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