منابع مشابه
Vehicle Cabin Noise Simulation due to High-frequencies Stimulation
In this paper, the acoustic environment in a vehicle cabin under the influence of highfrequencies aerodynamic sources has been studied. Some panels on the windshield, the roof, the doors, the front pillars, and the floor of a vehicle simulated as input source of noise when the car is moving at high speed, i.e. 112 km/h. The status of vehicle cabin in each of these modes has been studied and com...
متن کاملThe Prediction of Noise due to Jet Turbulence Convecting past Flight Vehicle Trailing Edges
High intensity acoustic radiation occurs when turbulence convects past airframe trailing edges. A mathematical model is developed to predict this acoustic radiation. The model is dependent on the local flow and turbulent statistics above the trailing edge of the flight vehicle airframe. These quantities are dependent on the jet and flight vehicle Mach numbers and jet temperature. A term in the ...
متن کاملEffects of Co-Exposure to Noise and JP-4 Jet Fuel on Hearing Loss in Rats
Background and Aim: Autotoxic substances such as JP-4 jet fuel can have negative effects on the auditory system by the various means such as cochlear dysfunction. The purpose of this study was to investigate the combined effects of exposure to JP-4 jet fuel and noise on hearing loss in rats, to determine the possible interference effects of these two risk factors on rat auditory system. Methods...
متن کاملnoise annoyance due to construction worksites
background: noise pollution can contribute to adverse health effects in humans. noise annoyance and related problems, caused by noise emission during the progress of building construction, have become increasingly important. these problems can influence the exposed workers, as well as vicinity residents. the goal of the present study was to assess the noise annoyance due to noise from construct...
متن کاملAnalysis of Structural Vibrations due to Passage of Underground Trains
During the last decades, the railway traffic in densely populated areas has increased. At the same time, passenger trains have become faster and freight trains have become heavier. Consequently, trains are an increasing source of ground vibration, which may be a nuisance to people, buildings and sensitive equipment. In this research, a two-dimensional dynamic system, including underground train...
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ژورنال
عنوان ژورنال: The Journal of the Acoustical Society of America
سال: 1956
ISSN: 0001-4966
DOI: 10.1121/1.1905133