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new Environmental noise assessment methodology

Typically in the acoustics industry, consultancies will construct noise models with noise level data of noise sources and construct the site from simple geometry such as a rectangle to represent buildings. A report will then be prepared detailing the predicted noise levels as well as noise contour maps for the surrounding environment.

To produce much higher quality noise models, we utilise a combination of noise levels and audio recordings of site noise sources as well as Lidar and Photogrammetry to make the highest quality Computer Noise Models possible to looks and sounds as close to the real thing (within budget restraints). This forms our Auralisation service, enabling you to hear what a sites noise emissions would be at any location and therefore make informed decisions about exactly how site noise emissions can be reduced. Further, while our competitors can only produce 3D noise models that show a grey rectangles to represent sites and site assets, our noise models can be photo realistic 3D models so there is no confusion about what area or plant item is an issue. 

Auralisation is important for any site, but is particularly important for sites within Victoria as the General Environmental Duty (GED) as part of the EPA Environmental Protection Act and Regulations, requires sites to minimise noise as far as reasonably practicable to reduce the risk to human health and the environment. The GED is criminally enforceable and even if a site has been shown to be at compliant levels in accordance with the EPA Noise Protocol, it can still be legally forced to shut down during sensitive periods or implement noise mitigation strategies if it is determined by the EPA that the noise can be reduced further to minimise risk to human health or the environment. 

Lidar

Light Detection and Ranging (Lidar) is used to obtain accurate 3D models of client assets for inclusion into noise prediction software. 

The Lidar scans are quick for standard sized individual plant items such as pumps, motors, etc. and allows us to include the 3D models in our software where they can be viewed at any angle. In our software we assign audio data obtained on site to the 3D object where it can be viewed at any angle and distance to hear the noise emissions from it and other noise sources.

Photogrammetry

Using drones we are able to conduct scanning of areas to ensure structures and topography are accurate and to enable us to create 3D models of sites for inclusion into our noise prediction software. These site 3D models are photo realistic  (within budget constraints) and are for full sites as opposed to individual items.

When used in combination with Lidar (for more detailed individual plant item 3D models) and noise level and audio recording of site noise sources,  a full sites' noise emissions can be predicted and heard at any location.