The second edition of Predicting Outdoor Sound is an up-to-date reference on the propagation of sound close to the ground and its prediction. New content includes comparisons between predictions and data for road traffic, railway and wind turbine noise; descriptions of source characteristics in the HARMONOISE model; propagation over rough seas, parallel low walls, and lattices; outlines of numerical methods; gabion (caged stones) and sonic crystal noise barriers; meteorological effects on noise barrier performance; and the prediction requirements for auralization.
The book brings together relevant theories, prediction schemes, and data, thereby providing a basis for determining what model or scheme might be applicable for any situation. It also offers a background on useful analytical approximations and the restrictions, as well as difficulties and limitations associated with engineering prediction schemes.
The text should be of considerable interest to researchers in outdoor sound propagation and, more generally, it should provide a comprehensive primer on the topic for lecturers, consultants and students in acoustics and noise control.
Table of Contents
2 The propagation of sound near ground surfaces in a homogeneous medium
3 Predicting effects of source characteristics
4 Numerical methods based on time-domain approaches
5 Predicting the acoustical properties of ground surfaces
6 Measurements of the acoustical properties of ground surfaces and comparisons with models
7 Influence of source motion on ground effect and diffraction
8 Predicting effects of mixed impedance ground
9 Predicting the performance of outdoor noise barriers
10 Predicting effects of vegetation, trees and turbulence
11 Ray tracing, analytical and semi-empirical approximations for a-weighted levels
12 Engineering models
Keith Attenborough is Professor in Acoustics at the Open University, a former Editor-in-Chief of Applied Acoustics, and a former Associate Editor of the Journal of the Acoustical Society of America and Acta Acustica. He is co-author with Oleksandr Zaporozhets and Vadim Tokarev for Aircraft Noise (CRC Press, 2017), and has co-authored several chapters in Environmental Methods for Transport Noise Reduction (CRC Press, 2019). He is Chair of ANSI S1 WG20 on the measurement of outdoor ground impedance.
Timothy Van Renterghem is Associate Professor in Environmental Sound at Ghent University and holds a MSc. degree in Bioengineering (Environmental Technologies) and a PhD in Applied Physical Engineering. He is Associate Editor of Acta Acustica, the journal of the European Acoustics Association, and Elsevier's Urban Forestry and Urban Greening. His main research interests include the impact of local meteorology on sound propagation outdoors, green noise reducing measures, and urban sound propagation with a strong focus on (detailed) numerical modelling.