NOISINESS JUDGMENTS OF HELICOPTER FLYOVERS

Abstract

Judgment tests were conducted in which 21 college students judged the noisiness or unwantedness of eight recorded helicopter flyover noises vs a jet transport flyover noise and a shaped band of noise. Tests were conducted in an anechoic chamber using mainly the method of paired comparisons. These judgment tests indicate that the calculated perceived noise level is the best predictor of noisiness, followed closely by the N-weighted sound pressure level and the A- weighted sound pressure level, and finally, the overall sound pressure level. Duration and pure-tone corrections applied to the calculated perceived noise level did not improve the prediction accuracy of this measure.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1965
Accession Number
AD0648503

Entities

People

  • Karl S. Pearsons

Organizations

  • BBN Technologies

Tags

Communities of Interest

  • Air Platforms
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Accuracy
  • Acoustic Absorption
  • Aircrafts
  • Amplifiers
  • Anechoic Chambers
  • California
  • Contracts
  • Data Science
  • Helicopters
  • Information Science
  • Intensity
  • Jet Aircraft
  • Jet Transport Aircraft
  • Sound Pressure
  • Standards
  • Statistical Analysis
  • Switches

Readers

  • Acoustics.