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

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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

Author(s):
Magrab, Edward B. ; Andrulis, Marilyn W.
Author Organization(s):
ANDRULIS RESEARCH CORP BETHESDA MD
Descriptive Note:
Technical rept.,
Pagination:
0037

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
ARC-TR-73-0159.2
Contract/Grant Number(s):
N00014-73-C-0159
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*ACOUSTICS, SPECTRUM SIGNATURES), (*NAVAL VESSELS, *SHIP NOISE), (*NAVAL VESSELS, SHIP NOISE), SOUND, PRESSURE, ALGORITHMS, ACOUSTIC PROPERTIES
Field(s)/Group(s):
Marine Engineering, Air Breathing Engines (Unconventional)
Keyword(s):
LCC 20 CLASS VESSELS, COMPUTER AIDED ANALYSIS
Report Date:
1973 Jun 01