one of the common problems in reflective seismic records is the existence of coherent linear and random noises which cause covering of the most important parts of reflective signals; therefore, it is necessary to attenuate them by processing methods. several processing techniques have been devised for attenuation of coherent linear noises and linear radon or ?-? transform is a powerful techniqu...

Wave field synthesis (WFS) is a spatial sound reproduction technique that uses a high number of densely placed loudspeakers (secondary sources). This implies a spatial sampling process that may lead to aliasing artifacts. In the past, the spatial aliasing artifacts of WFS have mainly been investigated for the reproduction of monochromatic signals, and hence in the frequency domain. This contrib...

Spatial sound reproduction systems with a large number of loudspeakers are increasingly being used. Wave field synthesis is a reproduction system using a large number of densely placed loudspeakers (loudspeaker array). This implies a spatial sampling process that may lead to aliasing artifacts. This paper derives the spatial aliasing artifacts of linear loudspeaker arrays used for wave field sy...

Wave Field Synthesis (WFS) is a physical based sound reproduction technique. It relies on linear arrays of regularly spaced omnidirectional loudspeakers. A fundamental limitation of WFS is that the synthesis remains correct only up to a corner frequency referred to as spatial aliasing frequency. This paper addresses irregular spacing of loudspeaker array for WFS. Adapted driving functions are d...

Spatial sound reproduction systems with a high number of loudspeakers are increasingly being used. Wave field synthesis is a reproduction technique using a high number of densely placed loudspeakers (secondary sources). The underlying theory, however, assumes a continuous distribution of secondary sources. Loudspeakers placed at discrete positions imply a spatial sampling process that may lead ...

I describe a new way of constructing a gauge action that eliminates scaling artifacts, by writing the continuum formalism in terms of “gauge links” (Schwinger line integrals) and using the optimal SLAC representation of the lattice derivative. Computational performance can be maintained by implementing the action as a “stochastic” operator, as has been recently implemented in the MILC code for ...

This paper investigates the presence of spatial aliasing due to operating a linear array in the near eld It shows that the standard half wavelength sensor spacings rule which guarantees no aliasing in the operation of far eld arrays is not su cient to prevent aliasing in the near eld This claim is justi ed by theoretical considerations and corroborated by simulation results

We survey notions of aliasing and ownership. An extreme but conceptually useful model is that of pure linear languages where each object is constructed once and read, being consumed, once. We see more realistic programming languages as relaxing this to allow multiple references to an object (spatial aliasing) or multiple sequenced operations on a single live reference (temporal aliasing) before...