The Effect of Source Directivity and Side-Wall Scattering on Binaural Hearing Objective Measures
Integrating Acoustic Analysis in the Architectural Design Process using Parametric Modeling
Prediction of outdoor sound propagation by applying geometrical sound simulation technique
The municipal public address (M.P.A.) system for disaster prevention is an important information facility in communities. The speech intelligibility of such a system, however, tends to be deteriorated by multipass echoes with long time delay owing to reflections from nearby buildings and by the sounds from loudspeakers covering other subareas. When designing such an M.P.A. […]
A method for acoustic modeling of past soundscapes
This paper investigates the use of geometric simulation algorithms to model the acoustics of a church as it would have sounded in the late 16th century. Based on measured acoustic parameters, an average absorption parameter is developed for the heterogeneous walls of the Church of the Ospedaletto, obtaining a good match between the simulated model […]
Echo problems in Ancient Theatres and a comment to the ‘sounding vessels’ described by Vitruvius
Ancient Greek and Roman theatres are often considered acoustically perfect. However, the semicircular shape of the audience area in theatres built from hard and sound reflective materials may cause acoustic problems, and there is also evidence that the ancient architects were well aware of this. The Roman architect Vitruvius describes in his books on architecture […]
The ERATO project and its contribution to our understanding of the Acoustics of Ancient Theatres
The ERATO project (2003-2006, Contract Number ICA3-CT-2002-10031), was a three-year research project financed by the European Commission under the Fifth Framework INCO – MED Program. The ancient Greek and Roman theatres are famous for the excellent acoustics. However, it is not generally well known that different kinds of theatres were built, for different purposes and […]
Theatre of the Sanctuary of Asklepios at Epidaurus and the Theatre of Ancient Epidaurus: Objective measurements and computer simulations
Many Greek and Roman theatres are intensively used nowadays hosting a variety of performances. Part of the objectives of the EU funded project “ERATO” (Identification, Evaluation and Revival of the Acoustical heritage of ancient Theatres and Odea) was to process and discuss topics related to the theatres’ modern use such as restoration of acoustical properties, […]
The Acoustic Evolution of the large Theatre of Pompeii
The city of Pompeii (Italy) was buried by lava from the eruption of the volcano Vesuvio in 79 AD. The Large Theater of Pompeii was brought to light in recent centuries; in origin it could accommodate about 5.000 spectators, now it has been partly rebuilt, and is used for various kinds of show performances. Last […]
Computer simulation of the effect of the Audience on the Acoustics of the Roman Theatre of Beneventum (Italy)
The acoustics of the Ancient Theatre of Beneventum has been object of attention by the authors since five years ago when measurements were carried out in the aim of its characterization in the present state. This theatre was built by Emperor Hadrian in the 1st century A.D. Later, historical events as barbarian invasions, earthquakes and […]
Diffusion in concert halls analyzed as a function of time during the decay process
Diffusion and scattering continue to be hot topics in room acoustics and in particular in auditorium acoustics. It is being heavily debated how scattering due to surface roughness and room geometry relates to the level of diffusivity in a room. We suggest the Dynamic Diffusion Curve (DDC) as a tool for evaluation of the level […]
