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 …

The potential usefulness of relatively simple pore microstructures such as parallel, identical,
inclined slits for creating broadband sound absorption has been argued through analytical …

Macro-structures that improve the sound absorption of hard-backed layers of rigid-porous
material include graduated arrangements for obtaining impedance matching and vertical …

Spherical weak blast propagation above a rough periodic surface is investigated by
performing numerical simulations of the Euler equations. The study of the reflection pattern …

Growing demand on transportation, road and railway networks has increased the risk of
annoyance from these sources and the need to optimise noise mitigation. The potential …

The band structures of shear horizontal (SH) waves in a periodically corrugated
piezoelectric plate (PCPP) are studied by using the supercell plane wave expansion (SC …

A surface homogenization method for acoustic waves over thin microstructured surfaces in
the presence of a fluid in a potential flow is presented. Sound hard surfaces are considered …

A modal model formulation explains many aspects of sound propagation over complex
grooved surfaces. Insights that such a formulation offers about the intrinsic resonant …

Propagation of an airborne acoustic pulse from a point source above an array of regularly
spaced rigid cylinders on a rigid plane has been investigated using a two-dimensional …

An analytical model is developed to predict the effects of surface roughness on the acoustic
properties of micro-slits. Periodic (sinusoidal) roughness distributed with relatively small …