A computer modeling procedure has been developed to assess the effect of an enclosure on far-field noise levels. The model accounts for directional radiation patterns and enclosure diffraction effects for each of the six sides. Each side is represented as a point source, and for a given receiver location, all possible noise paths are appropriately weighted and summed. Application is made for several tractor shovels which use various design changes directed towards meeting Environment al Protection Agency standards. Comparisons between predictions and test measurements show good agreement.


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    Title :

    Modeling Directionally Radiating Acoustical Enclosures to Determine Noise Levels


    Additional title:

    Sae Technical Papers


    Contributors:
    O'Keefe, Ed (author)

    Conference:

    32nd Annual Earthmoving Industry Conference ; 1981



    Publication date :

    1981-04-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English





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