Virtual audio reality environments have in recent years become popular in such fields as computer music, acoustics, multimedia, and telecommunications [1]. There are often computational constraints that lead to very simplified systems that faintly resemble the physical reality. We present a distributed expandable virtual audio reality system that can accurately yet efficiently model room acoust...

For architects, real-time 3D visual rendering of CAD-models is a valuable tool. The architect usually perceives the visual appearance of the building interior in a natural and realistic way during the design process. Unfortunately this only emphasizes the role of the visual appearance of a building, while the acoustics often remain disregarded. Controlling the room acoustics is not integrated i...

This paper presents the results of a survey to assess the extent of use of safety architectural patterns in Logica to solve commonly reoccurring problems in the safety domain. A number of Logica safety related projects, active during August 2011, were considered to establish which specific patterns had been used so a profile of pattern use could be established along with a view of their perceiv...

Acoustic holograms have promising applications in sound-field reconstruction, particle manipulation, ultrasonic haptics, and therapy. This study reports on the theoretical, numerical, experimental investigation of multiplexed acoustic at both audio frequencies via a rationally designed transmission-type metamaterial. The proposed metahologram is composed two Fabry–Pérot resonant channels per un...