HELICOPTER NOISE ANALYSIS--ROUND-ROBIN TEST

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)

• Corporate Authors:

  Transportation Systems Center

  55 Broadway, Kendall Square
  Cambridge, MA  United States  02142

  Federal Aviation Administration

  800 Independence Avenue, SW
  Washington, DC  United States  20591
• Authors:
  • Rickley, E J
• Publication Date: 1981-8

Media Info

• Pagination: 79 p.

Subject/Index Terms

• TRT Terms: Acoustic measuring instruments; Acoustic signal processing; Acoustics; Aircraft noise; Analog computers; Data reduction; Digital computers; Helicopters; Meteorological phenomena; Power spectra; Ratios; Signal processing; Simulation; Sound transmission; Spectrum analysis; Standardization; Tests; Values in measurement
• Uncontrolled Terms: Correction (Mathematics)
• Old TRIS Terms: Acoustic data; Acoustic measurement; Acoustic signals; Analog systems; Digital systems; Indexes ratios; Meteorological data; Overflight; Tape recording; Test and evaluation
• Subject Areas: Aviation; Environment;

Filing Info

• Accession Number: 00346001
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: TSC-FAA-81-13, FAA-AEE-81-13
• Files: NTIS, USDOT
• Created Date: Jan 29 2003 12:00AM