Accession Number : AD0765903

Title :   A Study of the Conversion of dBA to Equivalent Octave Band Pressure Level Contours for Shipboard Spaces.

Descriptive Note : Technical rept.,

Corporate Author : ANDRULIS RESEARCH CORP BETHESDA MD

Personal Author(s) : Magrab,Edward B. ; Andrulis,Marilyn W.

Report Date : JUN 1973

Pagination or Media Count : 37

Abstract : A technique for converting dBA to equivalent octave band pressure level contours has been developed based on the statistics of the available space data of the DLG-12, LCC-20 and AKA-113 type surface ships. For the available data, it is shown that there is no statistically significant difference between measured dBA values, obtained directly by an A-weighted sound level meter, and calculated dBA values, obtained by exercising an algorithm which approximates the A-weighted filter of a sound level meter. (Author)

Descriptors :   (*ACOUSTICS, SPECTRUM SIGNATURES), (*NAVAL VESSELS, *SHIP NOISE), (*NAVAL VESSELS, SHIP NOISE), SOUND, PRESSURE, ALGORITHMS, ACOUSTIC PROPERTIES

Subject Categories : Marine Engineering
      Air Breathing Engines(unconventional)

Distribution Statement : APPROVED FOR PUBLIC RELEASE