Effects of median barriers on highway noise levels

2013 ◽  
Vol 133 (5) ◽  
pp. 3588-3588
Author(s):  
Jonghoon Kim ◽  
Louis Cohn ◽  
Ning Shu
Keyword(s):  
Noise Levels ◽  
Highway Noise

Ray Acoustics Approach to Quantitative Prediction of Highway Traffic Noise

2010 ◽  
Author(s):  
Liming Dai ◽  
Huay Seen Lee
Keyword(s):  
Prediction Model ◽  
Traffic Noise ◽  
Environmental Noise ◽  
Quantitative Prediction ◽  
Highway Traffic ◽  
Noise Levels ◽  
Modeling Approach ◽  
Highway Noise

A Highway Prediction Model (HPM) using the ray acoustics modeling approach is developed in this research. The HPM model can be used to quantitatively predict the environmental noise levels on highways of different pavements. Comparison between the measured noise levels using the SPB method and predicted noise levels with the model developed shows that the prediction model established is reliable for estimating highway noise in Canada.

Effect of traffic mix volume and speed on highway noise levels

1976 ◽  
Vol 60 (S1) ◽  
pp. S23-S23
Author(s):  
Richard J. Peppin ◽  
Basil H. Manns
Keyword(s):  
Noise Levels ◽  
Highway Noise

Study for how to reduce highway noise levels using TNM

2013 ◽  
Author(s):  
Jonghoon Kim ◽  
Louis Cohn ◽  
Ning Shu
Keyword(s):  
Noise Levels ◽  
Highway Noise

Highway noise levels in a suburban environment under inversion conditions

2005 ◽  
Vol 117 (4) ◽  
pp. 2448-2448
Author(s):  
James Chambers ◽  
Hugh Saurenman ◽  
Robert Bronsdon ◽  
Louis Sutherland ◽  
Ken Gilbert ◽  
...  
Keyword(s):  
Noise Levels ◽  
Highway Noise ◽  
Suburban Environment

Damage Risk: An Evaluation of the Effects of Exposure to 85 versus 90 dBA of Noise

1976 ◽  
Vol 19 (2) ◽  
pp. 216-224 ◽  
Author(s):  
James T. Yates ◽  
Jerry D. Ramsey ◽  
Jay W. Holland
Keyword(s):  
White Noise ◽  
Statistical Difference ◽  
Noise Exposure ◽  
Threshold Shift ◽  
Temporary Threshold Shift ◽  
Noise Levels ◽  
Potential Damage ◽  
Full Day ◽  
Damage Risk

The purpose of this study was to compare the damage risk of 85 and 90 dBA of white noise for equivalent full-day exposures. The damage risk of the two noise levels was determined by comparing the temporary threshold shift (TTS) of 12 subjects exposed to either 85 or 90 dBA of white noise for equivalent half- and full-day exposures. TTS was determined by comparing the pre- and postexposure binaural audiograms of each subject at 1, 2, 3, 4, 6, and 8 kHz. It was concluded that the potential damage risk, that is, hazardous effect, of 90 dBA is greater than 85 dBA of noise for equivalent full-day exposures. The statistical difference between the overall effects of equivalent exposures to 85 dBA as compared to 90 dBA of noise could not be traced to any one frequency. The damage risk of a full-day exposure to 85 dBA is equivalent to that of a half-day exposure to 90 dBA of noise. Within the limits of this study, TTS t was as effective as TTS 2 for estimating the damage risk of noise exposure.

Determination of the Probability Distribution of the Mean Sound Level

2010 ◽  
Vol 35 (4) ◽  
pp. 543-550 ◽  
Author(s):  
Wojciech Batko ◽  
Bartosz Przysucha
Keyword(s):  
Probability Distribution ◽  
Probability Distribution Function ◽  
Mean Value ◽  
Sound Level ◽  
Function Form ◽  
Noise Levels ◽  
Logarithmic Mean ◽  
The Mean ◽  
Estimation Of Uncertainty

AbstractAssessment of several noise indicators are determined by the logarithmic mean <img src="/fulltext-image.asp?format=htmlnonpaginated&src=P42524002G141TV8_html\05_paper.gif" alt=""/>, from the sum of independent random resultsL1;L2; : : : ;Lnof the sound level, being under testing. The estimation of uncertainty of such averaging requires knowledge of probability distribution of the function form of their calculations. The developed solution, leading to the recurrent determination of the probability distribution function for the estimation of the mean value of noise levels and its variance, is shown in this paper.

RAPID ASSESSMENT OF NOISE LEVELS IN THE WORKPLACE

2019 ◽  
Vol 85 ◽  
pp. 37-44
Author(s):  
A. A. Strokin ◽  
Keyword(s):  
Rapid Assessment ◽  
Noise Levels
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