Variability of flyover noise measures for repeated flights of turbojet and piston engine transport aircraft, Volume 1752
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1ote 2000 Minimum Slant A-level aircraft flyover noise Aircraft Noise altitude antilog Beranek and Newman composite perceived noise DATA ANALYSIS degree of variability discrete frequencies Distance in feet effective perceived noise EPNL data flight path flyover measurements flyover noise measures Flyover Noise Signals FLYOVER SIGNAL DURATION FOUR-ENGINE PISTON AIRCRAFT FOUR-ENGINE TURBOJET AIRCRAFT frequency weighting networks FUNCTION OF MINIMUM half-second intervals Hewlett-Packard humidity level flight flyovers MAXIMUM TONE-CORRECTED PERCEIVED maximum value measurements during repeat measures are compared MEASURES FOR REPEATED MINIMUM SLANT DISTANCE N-WEIGHTED SOUND LEVELS NASA noise level measures NOISE LEVELS PNLC octave band spectra one-third octave band one-third octave frequency perceived noise level PISTON AIRCRAFT FIGURE PNLM PNLTM ranging from 0.2 reflecting signal duration repeat flyovers repeat runs show the degree SLANT DISTANCE Figure slope Sound Level Meter sound pressure levels Spectrum Analyzer TONE-CORRECTED PERCEIVED NOISE trN0 turbojet transport aircraft VARIABILITY IN FLYOVER VARIATION IN MAXIMUM Various flyover noise