ANNOYANCE CAUSED BY PROPELLAR AIRPLANE FLYOVER NOISE.

Two laboratory experiments were conducted to provide information on quantifying the annoyance response of people to propeller airplane noise. The items of interest were current noise metrics, tone corrections, duration corrections, critical band corrections, and effects of engine type, operation type, maximum takeoff weight, blade passage frequency, and blade tip speed. The first experiment examined 11 propeller airplanes with maximum takeoff weights greater than or equal to 5700 kg. The second experiment examined 14 propeller airplanes weighing 5700 kg or less. Five jet airplanes were included in each experiment. For both the heavy and light propeller airplanes, perceived noise level and perceived level predicted annoyance better than other current noise metrics. Duration corrections and corrections for tones greater than or equal to 500 Hz generally improved prediction ability for the heavy propeller airplanes. Duration corrections and tone corrections generally degraded prediction ability for the light propeller airplanes.