The Importance of Ear-Like Couplers in the Design of an Objective Test Facility for the Measurement of Earmuff Insertion Loss.

Abstract

The work described in this report was performed as part of a programme of research aimed at the development of an objective method of earmuff attenuation measurement. Data are presented which show that, for insertion loss measurements, the attenuation spectra produced by an objective method are practically independent of the method of acoustically coupling the measuring microphone to the volume contained by the earmuff. This simplifies the design of the objective method.

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Document Details

Document Type
Technical Report
Publication Date
Jan 29, 1981
Accession Number
ADA101372

Entities

People

  • J. A. Chillery

Organizations

  • Royal Aircraft Establishment

Tags

Communities of Interest

  • Air Platforms
  • C4I

DTIC Thesaurus Topics

  • Acoustic Attenuation
  • Acoustic Propagation
  • Attenuation
  • Ear
  • Frequency
  • Hearing Protection
  • Insertion Loss
  • Losses
  • Measurement
  • Quality Control
  • Simulations
  • Sound Waves
  • Spectra
  • Test Facilities
  • Transfer Functions
  • Transmission Loss
  • Waves

Fields of Study

  • Physics

Readers

  • Acoustics.
  • Systems Analysis and Design