scholarly journals Simple method for predicting most frequent level of insertion loss of detached houses against road traffic noise for evaluating the ‘Environmental Quality Standard for Noise’

2010 ◽  
Vol 31 (1) ◽  
pp. 68-74
Author(s):  
Yasuhiro Hiraguri ◽  
Ken Anai ◽  
Kazutoshi Fujimoto
Keyword(s):  
Environmental Quality ◽  
Insertion Loss ◽  
Road Traffic ◽  
Traffic Noise ◽  
Quality Standard ◽  
Road Traffic Noise ◽  
Simple Method ◽  
Environmental Quality Standard

scholarly journals Prediction of insertion loss of detached houses against road traffic noise using a point sound source model

2015 ◽  
Vol 36 (2) ◽  
pp. 109-119 ◽  
Author(s):  
Kazutoshi Fujimoto ◽  
Kyosuke Tsuji ◽  
Toru Tominaga ◽  
Kengo Morita
Keyword(s):  
Sound Source ◽  
Insertion Loss ◽  
Road Traffic ◽  
Traffic Noise ◽  
Source Model ◽  
Road Traffic Noise

scholarly journals STUDY ON EFFECTIVE NOISE BARRIER AT SENIOR HIGH SCHOOL (SMAN 02) CIBINONG

2019 ◽  
Vol 2 (2) ◽  
pp. 181
Author(s):  
Aulia Ramandha ◽  
Wisnu Eka Yulyanto ◽  
Sandra Madonna
Keyword(s):  
High School ◽  
Insertion Loss ◽  
Noise Level ◽  
Road Traffic ◽  
Traffic Noise ◽  
Road Traffic Noise ◽  
Type Ii ◽  
Noise Barrier ◽  
Barrier Type ◽  
The Difference

<strong>Aim:</strong> The aim of this study is to design noise barrier shapes and to investigate its effectiveness in reducing traffic noise at one public school in Indonesia. <strong>Methodology and Results:</strong> Two types of barriers were designed on a laboratory scale using plywood materials and the noise level was measured using Noise Analyzer Briiel and Kjaer Type 2250. Noise reduction was analyzed by using the Insertion Loss method based on the difference of the noise level before and after implementing the barrier. The results show that the barrier Type II with a length of 200 cm, a receiver height of 30 cm, and a curved shape of 45° angle (Type L) is more effective in reducing the noise than the other variation of barrier shape and length. Barrier Type L (Type II) can reduce the noise at high frequency between 1–8 kHz with an Insertion Loss value of 6.9–27.9 dB. <strong>Conclusion, significance and impact study:</strong> The noise barrier Type II, with specifications of 20 m length, 3 m height, and barrier material of reinforced concrete, is recommended to be used at the high school to reduce the road traffic noise.

scholarly journals Recent Developments in Sonic Crystals as Barriers for Road Traffic Noise Mitigation

Environments ◽  
2019 ◽  
Vol 6 (2) ◽  
pp. 14 ◽  
Author(s):  
Luca Fredianelli ◽  
Alessandro Del Pizzo ◽  
Gaetano Licitra
Keyword(s):  
Insertion Loss ◽  
Road Traffic ◽  
Traffic Noise ◽  
Porous Coating ◽  
Road Traffic Noise ◽  
Noise Mitigation ◽  
Noise Barriers ◽  
Continuous Growth ◽  
Sonic Crystal ◽  
Sonic Crystals

Noise barriers are the most widespread solution to mitigate noise produced by the continuous growth of vehicular traffic, thus reducing the large number of people exposed to it and avoiding unpleasant effects on health. However, conventional noise barriers present the well-known issues related to the diffraction at the edges which reduces the net insertion loss, to the reflection of sound energy in the opposite direction, and to the complaints of citizens due to the reduction of field of view, natural light, and air flow. In order to avoid these shortcomings and maximize noise abatement, recent research has moved toward the development of sonic crystals as noise barriers. A previous review found in the literature was focused on the theoretical aspects of the propagation of sound through crystals. The present work on the other hand reviews the latest studies concerning the practical application of sonic crystal as noise barriers, especially for road traffic noise mitigation. The paper explores and compares the latest developments reported in the scientific literature, focused on integrating Bragg’s law properties with other mitigation effects such as hollow scatterers, wooden or recycled materials, or porous coating. These solutions could increase the insertion loss and frequency band gap, while inserting the noise mitigation action in a green and circular economy. The pros and cons of sonic crystal barriers will also be discussed, with the aim of finding the best solution that is actually viable, as well as stimulating future research on the aspects requiring improvement.

The Mathematical Modelling of the Performance of Noise Barriers

1994 ◽  
Vol 1 (2) ◽  
pp. 91-104 ◽  
Author(s):  
D. C. Hothersall
Keyword(s):  
Insertion Loss ◽  
Road Traffic ◽  
Traffic Noise ◽  
Broad Band ◽  
Road Traffic Noise ◽  
Noise Barriers ◽  
Experimental Modelling ◽  
Acoustic Performance ◽  
Source Characteristic ◽  
The Mean

Analytical and numerical methods of modelling the acoustic performance of road traffic noise barriers are discussed, in particular the solution of the wave equation using boundary elements. Results are presented for a range of barrier profiles in the form of Insertion Loss spectra and the mean Insertion Loss for a broad band source characteristic of road traffic noise averaged over a range of representative receiver positions. The performance of barriers comprising multiple screens is considered. Comparison is made with the results of experimental modelling.

Road Traffic Noise Prediction Model

2012 ◽  
Vol 3 (4) ◽  
pp. 110-112
Author(s):  
Rahul Singh ◽  
◽  
Parveen Bawa ◽  
Ranjan Kumar Thakur
Keyword(s):  
Prediction Model ◽  
Road Traffic ◽  
Traffic Noise ◽  
Road Traffic Noise ◽  
Noise Prediction

SPEED DISTRIBUTION INFLUENCE IN ROAD TRAFFIC NOISE PREDICTION

2013 ◽  
Vol 12 (3) ◽  
pp. 493-501 ◽  
Author(s):  
Gerardo Iannone ◽  
Claudio Guarnaccia ◽  
Joseph Quartieri
Keyword(s):  
Road Traffic ◽  
Traffic Noise ◽  
Road Traffic Noise ◽  
Noise Prediction ◽  
Speed Distribution
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