RESPONSE TO ACTUAL AND SIMULATED RECORDINGS OF CONVENTIONAL TAKEOFF AND LANDING JET AIRCRAFT
Comparability between noise characteristics of synthesized recordings of aircraft in flight and actual recordings were investigated. Although the synthesized recordings were more smoothly time-varying than the actual recordings and the synthesizer could not produce a comb-filter effect that was present in the actual recordings, results supported the conclusion that annoyance response is comparable to the synthesized and actual recordings. A correction for duration markedly improved the validity of engineering calculation procedures designed to measure noise annoyance. Results led to the conclusion that the magnitude estimation psychophysical method was a highly reliable approach for evaluating engineering calculation procedures designed to measure noise annoyance. For repeated presentations of pairs of actual recordings, differences between judgment results for identical signals ranged from 0.0 to 0.5 db.
MAN-Acoustics and Noise, Incorporated2105 North 45th Street
Seattle, WA United States 98103
- Mabry, J E
- SULLIVAN, B M
- Publication Date: 1978-1
- Pagination: 78 p.
- TRT Terms: Acoustics; Aircraft noise; Jet engines; Landing; Psychological aspects; Psychophysics; Recording; Simulation; Takeoff
- Old TRIS Terms: Aircraft landing; Frequency synthesizers; Jet engine noise; Psychoacoustics; Takeoff and landing
- Subject Areas: Aviation; Environment; Safety and Human Factors; Vehicles and Equipment;
- Accession Number: 00181141
- Record Type: Publication
- Source Agency: National Technical Information Service
- Report/Paper Numbers: NASA-CR-145318 Final Rpt.
- Contract Numbers: NAS1-14404
- Files: TRIS
- Created Date: Sep 14 1978 12:00AM