Hot topics in noise

Abstract

In response to increasing worldwide public concern about noise, new methods and means for assessing and controlling noise have been developed. Outdoors, advancements have been made in understanding the role that soundscapes play in the quality of life in our communities, which range from urban to rural environments. Recent efforts have been devoted to quantifying and preserving the resource of natural quiet in US National Parks. The impact of theme parks and amphitheaters on their host communities is an active area of research. International development of environmental noise policy is producing significant action. Indoors, new investigations on room noise descriptors are advancing that area of noise practice. The development of standards for classroom acoustics, including practical limits on noise, has the potential to improve the educational experience for all children. Product design research for sound quality will reduce perceived noise levels, and also make the resulting sound more pleasant. Important recent findings on occupational noise effects include new criteria for noise exposure, and the real-world effectiveness of hearing protectors. For many people, acoustics is chiefly represented by noise. These advances in the practical application of acoustics promise to contribute to a more civilized and hospitable society.