As the vehicle and wind speeds and directions change, the unsteady flow creates non-stationary wind noise. To investigate people’s perceptions of non-stationary wind noise, a method to simulate the non-stationary wind noise is needed. Previously, a method was developed that used stationary recordings taken at several speeds and directions to create a set of sound pressure level predictions in each one-third octave band that are a function of wind speed and direction. These functions are used to create time-varying filters based on provided wind profiles. A reference wind noise measurement is then filtered to produce the sounds. A drawback of this method is that many stationary wind condition measurements are needed to form accurate sound pressure level functions, which can be time consuming. A method requiring fewer measurements was investigated. At each yaw angle one non-stationary noise measurement and one stationary reference measurement are used to estimate the relationship between sound power and wind speed. The accuracy of the estimation was validated by comparing wind noise simulations with wind tunnel measurements, A further improvement is to use partially correlated white noise signals to simulate binaural sounds that have a similar coherence structure between the left and right ear sounds to that observed in binaural measurements in the vehicle.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Improvements to a Method to Simulate Non-Stationary Wind Noise in Vehicles


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    Noise and Vibration Conference & Exhibition ; 2023



    Publication date :

    2023-05-08




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




    Noise measurement with stationary vehicles

    Ellis,M.V. / Waters,P.E. | Automotive engineering | 1978


    Faurecia vehicle acoustic synthesis method: a hybrid approach to simulate interior noise of fully trimmed vehicles

    Duval,A. / Rondeau,J.F. / Lhuillier,F. et al. | Automotive engineering | 2005


    Improvements in vehicles

    SIMON SHEPHERD | European Patent Office | 2019

    Free access

    Improvements in vehicles

    SHEPHERD SIMON | European Patent Office | 2015

    Free access

    CAA methodology to simulate turbulence-airfoil noise

    Clair, Vincent / Polacsek, Cyril / Le Garrec, Thomas et al. | AIAA | 2012