The results of a field test to determine the directional characteristics of acoustic waves propagated through a jungle from overflying aircraft are presented. In general, when aircraft are directly over the test site, the sound at a point 20 ft. above the ground arriving from the direction of the ground measures about 6 dB lower than sound arriving from overhead. As the aircraft becomes further from the test site, the difference becomes less. (Author)


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    Titel :

    Acoustics Tests in Puerto Rico


    Beteiligte:
    R. H. Carson (Autor:in)

    Erscheinungsdatum :

    1968


    Format / Umfang :

    23 pages


    Medientyp :

    Report


    Format :

    Keine Angabe


    Sprache :

    Englisch




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