Noise propagation analysis with web-based scene modelling

Singapore is a densely-populated city with a highly interconnected transport network and a heavy reliance on vehicular transport through these roads. As such, traffic noise is one of the leading contributors to noise pollution in urban areas and cities [8], adding on to other sources of sound...

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Main Author: Zhang, Wanyi
Other Authors: Lee Bu Sung, Francis
Format: Final Year Project
Language:English
Published: Nanyang Technological University 2023
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Online Access:https://hdl.handle.net/10356/165357
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-1653572023-05-02T08:58:10Z Noise propagation analysis with web-based scene modelling Zhang, Wanyi Lee Bu Sung, Francis School of Computer Science and Engineering EBSLEE@ntu.edu.sg Engineering::Computer science and engineering::Computing methodologies::Computer graphics Singapore is a densely-populated city with a highly interconnected transport network and a heavy reliance on vehicular transport through these roads. As such, traffic noise is one of the leading contributors to noise pollution in urban areas and cities [8], adding on to other sources of sound like industrial noise and various miscellaneous environmental sounds. Residential areas with higher road density also tend to have higher average outdoor sound levels, which is a problem due to the numerous negative health impacts that noise pollution can have on a person. [7] This project aims to improve on an existing noise modelling pipeline. It focuses on more accurately representing the 3D modelled trees used in the pipeline, which are environmental elements that act as noise barriers. It also aims to explore how the species of vegetation can affect the noise propagation in a certain area. It aims to improve the existing pipeline through various means that will be further illustrated below, in order to provide deeper insights on the analysis of the elimination of noise pollution via urban greenery. This paper is split into 3 main parts. 1. Data analysis of different tree species. 2. Modification of existing model to produce more accurate 3D outputs. 3. Noise propagation experiments and evaluations. The first component describes the retrieval of data on different tree species. There is limited information on crown sizes of trees in Singapore, which may be due to constant changes from pruning and other environmental factors, or the difficulty in obtaining such information. The required data hence had to be taken from other research previously done, and cross-referenced with research on the different tree species. The data was then analysed for the second part of the project. The second part utilises the evaluations from the previous part to modify the existing pipeline and produce more accurate representations of various tree species that we have chosen to analyse. The data is exported in a format suitable for use as input in QGIS to visualise the environmental elements in each area. It is then converted into an output that is compatible with the noise propagation prediction tool used in the last part. The last part describes the experiments carried out to examine how different sizes and shapes of noise barriers (i.e. tree species) affects the noise propagation to a receiver building. The experiments are carried out with generalised estimates formulated using several known properties of real-life tree data. This is used to evaluate the suitability of the various tree species in acting as noise barriers. Bachelor of Engineering (Computer Science) 2023-03-24T12:49:21Z 2023-03-24T12:49:21Z 2023 Final Year Project (FYP) Zhang, W. (2023). Noise propagation analysis with web-based scene modelling. Final Year Project (FYP), Nanyang Technological University, Singapore. https://hdl.handle.net/10356/165357 https://hdl.handle.net/10356/165357 en SCSE22-0333 application/pdf Nanyang Technological University
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Engineering::Computer science and engineering::Computing methodologies::Computer graphics
spellingShingle Engineering::Computer science and engineering::Computing methodologies::Computer graphics
Zhang, Wanyi
Noise propagation analysis with web-based scene modelling
description Singapore is a densely-populated city with a highly interconnected transport network and a heavy reliance on vehicular transport through these roads. As such, traffic noise is one of the leading contributors to noise pollution in urban areas and cities [8], adding on to other sources of sound like industrial noise and various miscellaneous environmental sounds. Residential areas with higher road density also tend to have higher average outdoor sound levels, which is a problem due to the numerous negative health impacts that noise pollution can have on a person. [7] This project aims to improve on an existing noise modelling pipeline. It focuses on more accurately representing the 3D modelled trees used in the pipeline, which are environmental elements that act as noise barriers. It also aims to explore how the species of vegetation can affect the noise propagation in a certain area. It aims to improve the existing pipeline through various means that will be further illustrated below, in order to provide deeper insights on the analysis of the elimination of noise pollution via urban greenery. This paper is split into 3 main parts. 1. Data analysis of different tree species. 2. Modification of existing model to produce more accurate 3D outputs. 3. Noise propagation experiments and evaluations. The first component describes the retrieval of data on different tree species. There is limited information on crown sizes of trees in Singapore, which may be due to constant changes from pruning and other environmental factors, or the difficulty in obtaining such information. The required data hence had to be taken from other research previously done, and cross-referenced with research on the different tree species. The data was then analysed for the second part of the project. The second part utilises the evaluations from the previous part to modify the existing pipeline and produce more accurate representations of various tree species that we have chosen to analyse. The data is exported in a format suitable for use as input in QGIS to visualise the environmental elements in each area. It is then converted into an output that is compatible with the noise propagation prediction tool used in the last part. The last part describes the experiments carried out to examine how different sizes and shapes of noise barriers (i.e. tree species) affects the noise propagation to a receiver building. The experiments are carried out with generalised estimates formulated using several known properties of real-life tree data. This is used to evaluate the suitability of the various tree species in acting as noise barriers.
author2 Lee Bu Sung, Francis
author_facet Lee Bu Sung, Francis
Zhang, Wanyi
format Final Year Project
author Zhang, Wanyi
author_sort Zhang, Wanyi
title Noise propagation analysis with web-based scene modelling
title_short Noise propagation analysis with web-based scene modelling
title_full Noise propagation analysis with web-based scene modelling
title_fullStr Noise propagation analysis with web-based scene modelling
title_full_unstemmed Noise propagation analysis with web-based scene modelling
title_sort noise propagation analysis with web-based scene modelling
publisher Nanyang Technological University
publishDate 2023
url https://hdl.handle.net/10356/165357
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