Annoyance Caused by Aircraft en Route Noise PDF Download
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Author: David A. McCurdy
Publisher:
ISBN:
Category : Aerodynamic noise
Languages : en
Pages : 44
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Book Description
Author: David A. McCurdy
Publisher:
ISBN:
Category : Aerodynamic noise
Languages : en
Pages : 44
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Book Description
Author: David A. McCurdy
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Author: Clemans A. Powell
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 46
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Book Description
Author: Kelli Francisco Key
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 42
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Book Description
Author: Thomas K. Dempsey
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 84
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Author: Clemans A. Powell
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 40
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722093501
Category :
Languages : en
Pages : 40
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Book Description
A laboratory experiment was conducted to quantify the annoyance response of people on the ground to enroute noise generated by aircraft at cruise conditions. The en route noises were ground level recordings of eight advanced turboprop aircraft flyovers and six conventional turbofan flyovers. The eight advanced turboprop enroute noises represented the NASA Propfan Test Assessment aircraft operating at different combinations of altitude, aircraft Mach number, and propeller tip speed. The conventional turbofan en route noises represented six different commercial airliners. The overall durations of the en route noises varied from approximately 40 to 160 sec. In the experiment, 32 subjects judged the annoyance of the en route noises as well as recordings of the takeoff and landing noises of each of 5 conventional turboprop and 5 conventional turbofan aircraft. Each of the noises was presented at three sound pressure levels to the subjects in an anechoic listening room. Analysis of the judgments found small differences in annoyance between three combinations of aircraft type and operation. Current tone and corrections did not significantly improve en route annoyance prediction. The optimum duration-correction magnitude for en route noise was approximately 1 dB per doubling of effective duration. Mccurdy, David A. Langley Research Center RTOP 535-03-11-03...
Author:
Publisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 884
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Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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This report presents the results of the third in a proposed sequence of studies to investigate human annoyance to noise from low-altitude military training route (MTR) flight operations. The sequence ranges from laboratory studies, in which the physical and social parameters are well controlled, but highly artificial, to field attitudinal surveys, in which these parameter are largely uncontrolled, but the setting is natural. In this third study, subjects were exposed to both real and recorded MTR noise events in their own homes for a period of four weeks. In the laboratory study it was found that MTR sounds having onset rates faster than 30 dB/second caused annoyance beyond what would be expected from the corresponding sound exposure level (SEL). The best fit to the data was found to be an onset rate adjustment to SEL, which has the form of a linear relation on a dB versus log (rate) scale, from 0 dB at a rate of 30 dB/second to 11 dB at 150 dB/second. The rented home study confirmed the laboratory onset rate adjustment, although the adjustment was found to begin at 15 dB/second rather than at 30 dB/second. The present study continued to confirm the existence of an onset rate effect. it also confirmed the equal energy principle. However, it did not show any dependence of annoyance on the sporadicity of the events.
Author:
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ISBN:
Category :
Languages : en
Pages : 34
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