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.


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

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


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Yu, Jinghe (Autor:in) / Davies, Patricia (Autor:in)

    Kongress:

    Noise and Vibration Conference & Exhibition ; 2023



    Erscheinungsdatum :

    08.05.2023




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Noise measurement with stationary vehicles

    Ellis,M.V. / Waters,P.E. | Kraftfahrwesen | 1978



    Improvements in vehicles

    SHEPHERD SIMON | Europäisches Patentamt | 2015

    Freier Zugriff

    Improvements in vehicles

    SIMON SHEPHERD | Europäisches Patentamt | 2019

    Freier Zugriff

    CAA methodology to simulate turbulence-airfoil noise

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