Impulse Assessment of the ComTac V Hearing Defender Headset and the Oakley SI Ballistic M Frame 2.0 Eyewear

Abstract

The impulse peak insertion loss (IPIL) is the standard measure of attenuation provided by hearing protection devices (HPDs) in response to an impulsive noise. This technical memorandum describes the IPIL testing conducted on a combined configuration that included the Oakley SI M Frame 2.0 eyewear and the ComTac V Headset. Testing included two test modes for the ComTacV: passive and active. In all occluded conditions, the ComTac V and Oakley SI M Frame 2.0 were donned. Testing was completed in accordance with the ANSI standard S12.42-2010. All device samples were tested at the nominal levels of 150, 160,and 170 decibel peak (dBP, re: 20 Pa). A total of five samples were fitted to an acoustic test fixture two times each for a total of 10trials per test level in both the passive and active test modes. Results suggest that the ComTac V Headset, when functioning properly and fitted in combination with the Oakley SI M Frame 2.0 can adequately protect against impulses below 155.6 dBP in both the passive and the active test modes.

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Document Details

Document Type
Technical Report
Publication Date
Mar 18, 2022
Accession Number
AD1175408

Entities

People

  • Alexa H. Kolias
  • Derek W. Schwaller
  • Jeremy S. Federman
  • Stephanie J. Karch

Organizations

  • Naval Submarine Medical Research Laboratory

Tags

Communities of Interest

  • Biomedical
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Acquisition
  • Biomedical Research
  • Data Acquisition
  • Department Of Defense
  • Digital Signal Processing
  • Filters
  • Hearing Protection
  • Impulse Noise
  • Instructions
  • Measurement
  • Microphones
  • Public Health
  • Shock Tubes
  • Signal Processing
  • Standards
  • Transfer Functions
  • United States

Readers

  • Acoustics.