Sound Power Level of Fire Alarms.

Abstract

This thesis deals with the acoustical effectiveness of fire alarm systems. Several single unit commercial and residential fire alarms currently on the market were tested to determine their sound power levels, directivity, and frequency spectra. Facilities used to determine these characteristics included both an anechoic chamber and a reverberation room. The thesis also evaluated the acoustic response of a handball court as a reverberand environment. The need for a rotating air diffuser is also discussed and its design and construction described. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1979
Accession Number
ADA074521

Entities

People

  • James J. Ernzen

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption Coefficients
  • Accuracy
  • Acoustic Absorption
  • Acoustics
  • Analyzers
  • Anechoic Chambers
  • Detectors
  • Frequency
  • Frequency Analyzers
  • Frequency Bands
  • Materials
  • Measurement
  • Power Levels
  • Resonant Frequency
  • Sound Pressure
  • Vibration
  • Warning Systems

Readers

  • Acoustical Oceanography.
  • Fire Suppression Systems Design.