SOUND SURVEY METER FOR FIELD TESTS OF FOG SIGNALS

Abstract

Tests of a small, comAug 61) OTS price $1.10 Coast Guard, Washington, D. C. SOUND SURVEY METER FOR FIELD TESTS OF FOG SIGNALS, by J. M. O'Connell, 25 July 61. 9p. incl. illus. (Proj. no. CGTD J15-5/1) Unclassified report DESCRIPTORS: *Recording devices, Design, *Acoustic detectors, Measurement, *Fog signals, Calibration, Effectiveness, Determination, Soun , Detection. Tests of a small, compact, self-contained sound measuring apparatus with a rated dynamic range of 50 to 146 decibels (re 0.0002 microbar) are reported. The instrument tested was a General Radio Type 1555-AS3 Sound Survey Meter with a ceramic microphone on an extension cable. Frequency response of the meter was investigated as a function of sound pressure level. Dynamic response at 1000 cps as a function of sound pressure level and temperat re dependence of 1000 cps are also reported. T HE REPORT CONCLUDES THE DEVICE CAN MEASURE THE OUTPUT OF MOST Coast Guard fog signals within + or - 2 decibels. (Author)

Document Details

Document Type
Technical Report
Publication Date
Jul 25, 1961
Accession Number
AD0260511

Entities

People

  • J.m. O'connell

Organizations

  • United States Coast Guard

Tags

DTIC Thesaurus Topics

  • Acoustic Detectors
  • Calibration
  • Coast Guard
  • Detection
  • Detectors
  • Dynamic Range
  • Dynamic Response
  • Field Tests
  • Fog Signals
  • Frequency Response
  • Measurement
  • Sound Pressure

Readers

  • Acoustical Oceanography.
  • Radar Systems Engineering.
  • Snow Cover Descriptors for Reptiles and Their Illustrations.