Acoustic Associates provides an entirely impartial, independent, consultancy service for the solution of noise and vibration problems.
Noise Mapping & Prediction

Noise Mapping & Prediction

Summary of Noise Mapping Services.

Noise Mapping

Acoustic Associates use a variety of computer programmes to assist in modelling and mapping projects. This includes environmental modelling software IMMI from

These programmes are used to generate 3D noise maps.

Their advantage is that complex noise environments from multiple sources (road, rail, aircraft and industrial/commercial plant) and over undulating terrain can be accurately

Noise maps are used for:
  • Residential planning
  • Assessment of noise from industrial/commercial plant on residential properties (BS4142) and other projects
Benefits of Using Noise Modelling:
  • 3D modelling representing noise impact at different heights can be generated.
  • Specific solutions (e.g. glazing) can be provided for each floor of a development.
  • Assessment of the effect of introducing various noise mitigation measures.
  • Carrying out rapid ‘what if’ calculations (for example to find the optimum position and height/length of noise barriers).

What Do We Do For You In Detail.

Noise Mapping and Prediction

There are circumstances when it is helpful to have detailed information regarding noise propagation. At Acoustic Associates we use the computer based environmental modelling software IMMI from

This programme faithfully implements the guidance and methodology set out in ISO 9613: 1996: Part 2: Attenuation of sound during propagation outdoors – general method of calculation. This is the European Union standard calculation method for the propagation of sound outdoors IMMI faithfully implements the propagation method of ISO-9613:1996; Acoustics – Attenuation of sound during propagation outdoors.

Noise maps are often used in the assessment such as:
  • Residential planning under Planning Policy Guidance 24: Planning & Noise (PPG24)
  • Assessment of noise from industrial/commercial plant on residential properties under BS4142
  • Rating Industrial Noise affecting mixed residential and industrial areas and other projects
Benefits of Using Noise Modelling

As IMMI is a 3D acoustic modelling package, representations of noise impact at different heights can be generated, from this; specific glazing solutions can be provided which can differ due to

Some circumstances where there is a desire for assessing the introduction of noise mitigation measures; noise modelling is the most cost effective solution. Alternative mitigation measures such as noise barriers (fencing and

Mapping for: Residential Planning

Assessment of a site for it's suitability for residential development under the Planning Policy Guidance 24: Planning & Noise (PPG24) modelling of the acoustic environment can often be invaluable. Models in this case can be used to categorise the site into the NECs which describe the likelihood of gaining planning permission, it is often found that for larger sites parts of the site can fall in to several differing NECs.

Mapping for: Industrial Noise in Residential Areas

Introduction of new industrial noise sources near to residential properties have the potential to cause local residents to complain of noise nuisance and local authorities often ask for assessments to be carried out before granting permission of installing plant. Production of noise maps can be used to estimate the likely noise impact of new plant before installation based upon manufactures acoustic data. Further in the case that proposed plant does not comply with local authority's requirements this can be used as a tool to select an appropriate alternative unit or mitigation measures.

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South WestSussexPeterborough, WessexWorcestershireNorth West
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