Tone-corrected metrics for pre-2005 INM helicopters

Details

• Creators:
  Schulz, Noah E.
• Corporate Creators:
  John A. Volpe National Transportation Systems Center (U.S.)
• Corporate Contributors:
  United States. Department of Transportation. Federal Aviation Administration. Office of Environment and Energy
• Subject/TRT Terms:
  • Helicopters
  • Aircraft noise
  • Mathematical prediction
  • Effective sound pressure
  • Sound level
  • Acoustic measuring instruments
  • Noise prediction
  • Noise model
  • Integrated Noise Model
  • Helicopter noise data
  More +
• Publication/ Report Number:
  DOT-VNTSC-FAA-14-04
• Resource Type:
  Tech Report
• Geographical Coverage:
  United States
• Corporate Publisher:
  John A. Volpe National Transportation Systems Center (U.S.)
• Abstract:
  Of the 21 Helicopters represented in INM 7.0b, only five include the tone-corrected metrics. The calculation of these metrics involves the analysis of 1/3 octave-band data obtained during the source data measurement process, and requires sound-pressure levels at all measured frequency bands (50-10,000 Hz) for the duration of the aircraft event. A census of data availability was undertaken for helicopters currently in the INM, to determine whether available source data were sufficient to reprocess and calculate the tone-corrected metrics.
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/12002/dot_12002_DS1.pdf
• File Type:
  [PDF - 126.28 KB]
• Collection(s):
  Volpe Center
• Main Document Checksum:
  urn:sha256:b0651399580bbe1be31e08e4628294c54b7206d81448fadf4d75fe2160fc9ced