Helicopter Noise Analysis--Round-Robin Test.

Abstract

This report documents the results of an international round robin test on the analysis of helicopter noise. Digital spectral noise data of a 3.5-second simulated helicopter flyover and identical analog test tapes containing helicopter noise data, reference signals, test tones and time code signals were sent to 13 participating organizations. The purpose of the test was to evaluate data reduction systems and procedures; to determine the magnitude of the variability between representative systems and organizations; and to identify potential causes and assist in establishing recommended procedures designed to minimize the variablity. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1981
Accession Number
ADA103724

Entities

People

  • Edward J. Rickley

Organizations

  • John A. Volpe National Transportation Systems Center

Tags

Communities of Interest

  • Air Platforms

DTIC Thesaurus Topics

  • Aircraft Noise
  • Atmospheric Attenuation
  • Computers
  • Data Analysis
  • Data Reduction
  • Detectors
  • Digital Data
  • Dynamic Response
  • Environment
  • Flight Paths
  • Frequency
  • Frequency Bands
  • Frequency Response
  • Measurement
  • Sound Pressure
  • Tape Recorders
  • Tape Recording

Readers

  • Acoustics.
  • Aerospace Test and Evaluation
  • Defense Technology Research and Development.