A STUDY OF THE CONVERSION OF DBA TO EQUIVALENT OCTAVE BAND PRESSURE LEVEL CONTOURS FOR SHIPBOARD SPACES

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)

• Corporate Authors:

  Andrulis Research Corporation

  4720 Montgomery Lane
  Bethesda, MD  United States 
• Authors:
  • Magrab, E B
  • Andrulis, M W
• Publication Date: 1973-6

Media Info

• Pagination: 37 p.

Subject/Index Terms

• TRT Terms: Acoustic properties; Acoustic signature; Acoustics; Algorithms; Analysis; Combat vehicles; Electromagnetic spectrum; Information processing; Measurement; Military vessels; Noise; Pressure; Ships; Sound
• Uncontrolled Terms: Computer aided analysis; Noise measurement; Ship noise
• Old TRIS Terms: Aka 113 class vessels; Dlg 12 class vessels; Equivalent octave band pressure; Lcc 20 class vessels; Spectrum signatures
• Subject Areas: Environment; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00051045
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: ARC-TR-73-0159.2 Tech Rpt
• Contract Numbers: N00014-73-C-0159
• Files: TRIS
• Created Date: Mar 12 1974 12:00AM