High Speed Vessel Medical Limited Objective Experiment, Noise Assessment and Noise Reducing Stethoscope Field Test

Abstract

Throughout NSMRL's pursuit in making optimal use of auditory information in sonar displays, interference from airborne sound in the listening environment has been a major issue. NSMRL's success in using active noise cancellation to prevent masking by airborne sound has lead to the realization that shipboard spaces may be habitable by hearing-risk standards, but not operationally suitable for critical mission tasks. Digital sound processing has opened up the auditory detection, display and transmission of information in inherently noise environments. This Medical Limited Objective Experiment (LOE) was valuable both to evaluate the noise environment in spaces not designed for habitation, and to simultaneously test a pre-production noise-reducing stethoscope. In controlled setting under operationally-relevant shipboard noise conditions in the field tests, the noise-reducing stethoscope proved to be significant, substantial improvement over a conventional sound-powered device.

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Document Details

Document Type
Technical Report
Publication Date
Aug 26, 2006
Accession Number
ADA456892

Entities

People

  • Christopher Duplessis
  • Joseph S. Russotti

Organizations

  • Naval Submarine Medical Research Laboratory

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Acoustic Signals
  • Airborne
  • Attenuation
  • Biomedical Research
  • Data Analysis
  • Detection
  • Digital Signal Processing
  • Field Tests
  • Frequency
  • Health Care
  • Health Services
  • Measurement
  • Noise Reduction
  • Signal Processing
  • Sound Pressure
  • Standards
  • Test And Evaluation

Readers

  • Acoustics.
  • Aerospace Test and Evaluation
  • Systems Analysis and Design

Technology Areas

  • Space