Nonuniformities of sound level occur in all reverberant rooms including those used in sonic testing. A theory is presented which describes these variations statistically in terms of analysis bandwidth and room reverberation time. The theory applies above a certain cutoff frequency and in regions remote from room boundaries. These nonuniformities produce uncertainty in the room averaged sound spectrum levels leading to potentially serious risk of undertest or overtest. A methodology is proposed whereby the risk of any degree of undertest or overtest can be predicted and controlled in advance. The methodology employs hypothesis testing applied to the known statistics of the sound field.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Nonuniformities of Reverberant Sound Fields and Their Implications for Sonic Test Specification


    Additional title:

    Sae Technical Papers


    Contributors:

    Conference:

    Aeronautic and Space Engineering and Manufacturing Meeting ; 1969



    Publication date :

    1969-02-01




    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English



    Active Control of Reverberant Sound Fields

    Clark, R. L. / Cole, D. G. / Frampton, K. et al. | British Library Conference Proceedings | 1995


    Perturbation Theory and Nonuniformities

    Ramnath, Rudrapatna V. | AIAA | 2010


    Tire Roughness - Which Tire Nonuniformities Are Responsible

    Marshall, K. D. / Miller, R. F. / Iden, R. W. et al. | SAE Technical Papers | 1974



    Reduction of Tire Nonuniformities by Machining Techniques

    Hamburg, James / Horsch, John | SAE Technical Papers | 1971