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Sound Advice with JTA Noise Modelling

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Sound Advice with JTA Noise Modelling

By
Jeremy Trotman
on 18 Apr 2016 3:33 PM
Blog Category: Noise Blog

WHAT IS NOISE MODELLING AND WHY DO WE USE IT?

Noise modelling can be a powerful tool in assessing noise from industry facilities with a large number of noise sources.

It can accurately determine what noise sources are the main contributors to noise pollution in the surrounding environment and how the noise environment will change when problem noise sources are controlled.

From the results of noise modelling, a Noise Control Program is developed to help identify what noise sources need to be controlled and by how much to bring the facility into legally compliant noise levels.

A Noise Control Program is an ever evolving tool, with existing noise sources treated, new noise sources added, and other noise controls implemented.

Proposed additions to facilities can be modelled to determine their impact on noise sensitive receivers early in a project lifecycle, thus allowing appropriate noise controls to be designed and incorporated into the project before construction begins, eliminating the need for extensive rectification works later in the project life cycle.

At JTA we use SoundPLAN Noise Modelling, the aim of SoundPLAN modelling is to provide a comprehensive model of the site’s current and future noise emissions.

This allows our clients to look at different scenarios as to how they can treat high noise level sources and to see the benefits it would have for the overall facility.

Process:
  • Our acoustic consultant will conduct a site visit to gain noise data of all noise sources on site. This measurement data will then be included into a noise model drafted by our acoustic consultant.
  • The model is drafted based on topographic data pertinent to the local area, with the location and elevation of relevant facilities. Building and structures surrounding the facility are also modelled.
  • Once the model has been generated, it is then populated with the measurements obtained from the site. The boundary conditions are then inputted into the model and the model is then calibrated to real world measurements.
  • Once the model reflects the existing facilities noise output, a variety of treatments are applied to the problem noise sources and the most cost effective and easily implemented solutions to ensure legislative compliance are presented to our clients.
Benefits:
  • Noise Modelling gives us the ability to work through a range of scenarios with different treatments to see the benefit they have individually and collectively of the overall noise footprints.
  • Each noise control option can be incorporated into the model allowing the benefit of each option to be individually determined.
  • The noise level at specific sensitive receivers can be predicted and the results can presented in a noise map.
  • Noise control options can be developed focusing on the problem noise sources. Future changes to the site can be modelled to determine their impact before they are installed to see their viability or cost effectiveness.
  • Determine the impact of the site at the façade of the noise sensitive receivers without entering their property.
  • Determine the impact of individual noise sources on noise sensitive receivers and present a hierarchy of worst offending noise sources so the most efficient treatments can be applied, e.g. rather than building a large barrier, a small enclosure may be all that is required.

JTA's Noise Modelling services can be used for, but is not limited to, noise impact predictions of existing and proposed projects such as:

  • Infrastructure
  • Construction
  • Industrial
  • Commercial
  • Residential or Sporting venues

As recognised specialists in the area of noise and acoustics, JTA have vast experience in identifying, quantifying and controlling environmental noise from industrial and commercial sites, traffic, music, entertainment as well as noise in residential dwellings.

Our team of environmental noise assessment specialists will conduct an environmental noise assessment to ensure that you meet your responsibilities under relevant environmental noise legislation and regulations.

Environment noise assessments conducted by JTA Noise are in line with the requirements of the relevant standards and policies. These assessments are performed during the day, evening or night (depending on the facilities operating periods) and require the measurement of background noise levels (i.e. without the noise source operating). Measurements can be short-term with one of our acoustic consultants present or long-term with continuous noise loggers.

We work closely with our clients to ensure we understand their needs and provide realistic and achievable solutions to best reflect the outcome they desire.

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