Volume 6, Issue 1, January 2010
Index of content:
6(2010); http://dx.doi.org/10.1121/1.3373154View Description Hide Description
The Richmond Olympic Oval in Vancouver, Canada is the largest structure built for the 2010 Olympic Winter Games. Dramatically located beside the Fraser River, with expansive views north to the Coast Mountains, this monumental building stretches to a length of five football fields laid side by side. It will host the long track speed skating events along with the 8000 expected fans. This distinctive structure, shown in Fig. 1, will be the architectural symbol of these games.
6(2010); http://dx.doi.org/10.1121/1.3373152View Description Hide Description
This is the second part of a tutorial series on wave propagation in arrays of scatterers. The first part of the tutorial discussed wave propagation in arrays of scatterers arranged periodically; this part will cover waves propagating in disordered (non-periodic) arrays. A later part will treat waves propagating in a relatively new type of array: the “Penrose tile” or “quasicrystal.” Wave propagation in a disordered array is considerably more difficult, because now it is necessary to solve the full problem, satisfying boundary conditions on each of a large number of scatterers.
6(2010); http://dx.doi.org/10.1121/1.3373153View Description Hide Description
Since the days of the Wright brothers flying their first airplane, noise and its effects on hearing and communications have been an issue in the operation of aircraft. The Air Force Research Laboratory (AFRL) conducts auditory and acoustic research and development programs addressing unique Air Force needs relative to both air and ground operations. These programs have focused on two major areas‐‐(1) bioacoustics in the development of noise exposure criteria, hearing protection, active noise reduction, voice communications, spatial auditory displays, and spatial hearing and (2) physical acoustics in the measurement, modeling, and propagation of aircraft noise. This article is meant to give a flavor of the people and facilities at the AFRL acoustics group and the unique projects they are conducting.