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Acoustic Compliance Australia recently completed an environmental noise assessment for a large site in regional Victoria. As part of this assessment we got to test out using handheld LiDAR to obtain 3D models of site assets to quickly and easily use this information for noise models and auralisation projects. One of the struggles in the acoustics industry is communicating to clients what noise sources are causing issues from a visual perspective. Photos and sketches can be ok, but when a situation is complex these can sometimes not be enough. Proprietary acoustic 3D prediction software is often quite basic in how structures and noise sources are represented, with buildings usually being a grey rectangle and noise sources a dot or a coloured area or line. These simple models can usually be more than adequate if all you need to know is what the noise footprint of the site is at nearby residential receptors. However, when a client needs to show an acoustic reports to others within their organisation to actually discuss what what is causing any issues and how to fix it, this is where these models can fall down. Below is a video of the process to capture LiDAR of a the noise source and another of the scanned object turned into a 3D asset.
Once scanned, these models can be viewed at any angle and distance. Problem areas can be focussed on and pointed out allowing for easier communication. The model files can be exported in a variety of mesh and point cloud formats including DXF, LAS, STL, OBJ, FBX and many more so the 3D asset can be included in client digital systems.
These 3D models are too complex to be imported into traditional noise modelling software. However as part of Acoustic Compliance Australia's R&D, these models will serve as a detailed component in our environmental noise Auralisation service we're developing, where we will allow our clients to not only know how loud a noise is in decibels but to also be able to hear it. To find out more or for a demonstration, feel free to give us a call or email us. William Dalmau 0401 113 666 [email protected]
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