Current Trends in Environmental Noise Calculation Software in Europe

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Introduction

This paper briefly describes the state of the art of development of environmental noise calculation software in Europe, concentrated on the following areas:

• The Harmonoise and Imagine projects and the Good Practice Guide on Strategic Noise Mapping
• The role of combining measurements and calculations for more flexible problem solving
• Uncertainty: qualitative methods to determine uncertainty levels of noise calculations
• Optimising environmental noise calculation capacity

The Latest Developments in Standards in Europe

Overview

There are three main areas of development in Europe on environmental noise calculation methods – Harmonoise [1], Imagine [2] and the Good Practice Guide on Strategic Noise Mapping produced by the European Commission’s Working Group on the Assessment of Environmental Noise [3].

Harmonoise

The Harmonoise project, completed at the start of this year, has developed state-of-the-art environmental noise calculation methods. These include the Harmonoise Engineering Model that is expected to achieve widespread use and is already implemented in commercial software [4, 5]. The Harmonoise project has made available a wide range of documentation on its website including its summary report that, however, has not yet been accepted by the European Commission. It has been developed to give good results in acceptable calculation times for large models. A road source model has been developed allowing input data based on road properties (traffic flow, composition, speed, driver behaviour, pavement, etc) to be used. No railway source model was developed – this task was handed over to the Imagine project.

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