virtual source

virtual source

[′vər·chə·wəl ′sȯrs]
(acoustics)
A source of sound which is composed of the same material as that in which the sound propagates and which does not have sharply delineated boundaries; such sources include thermal sources (such as lightning and thermoacoustic arrays), turbulence (as in rocket and jet engines), and sound itself (as in a parametric acoustic array).
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
All of the functionality in legacy Pathfinder software has been improved upon, the company says, including customizable user panels, automatic table generation, virtual source routing, and Memory Slotsthat allow you to make decisions based on custom pieces of information.
They included the latest innovation of full matrix capture (FMC), and virtual source aperture (VSA) and the latest advancements in automated inspection, enabling accurate and detailed inspection of components with complex geometry.
Lastly, downlights with a high-performance virtual source optical system are installed in the terminal's front side canopies and in the porticos on the rear side of the terminal.
By using a virtual source node and a virtual sink node, the problem is transformed into a single source node and single sink node transportation network flow problem.
Philippine Trade Commissioner Michael Ignacio also unveiled the collaboration between the Philippine Trade & Investment Center in Silicon Valley and One Virtual Source to create onevirtualsource.com (OVS or the Philippine Services Delivery Platform).
First, during an observation period it is necessary to determine spectra [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] of real signals [s.sub.i](t) from a real source and spectra [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII] of a flipped analytic signal [s.sup.F.sub.i](t) from the virtual source. We can compute the flipped cross-power spectrum (or flipped spectrum) [MATHEMATICAL EXPRESSION NOT REPRODUCIBLE IN ASCII], with no prefiltering, between a real signal [s.sub.i](t) and a virtual sensor signal [s.sup.F.sub.i](t) based on
To reproduce a spherical wavefront emanating from a virtual source S, the input current of the m'th x-directed dipole in the PA is chosen as:
Cloud computing is simply defined as access to processing power from a virtual source. You never interact with it, your applications do.
* Allow all data sources to act as a single virtual source, making it easier to deliver data in multiple ways for different consumers.
In this paper, in order to overcome the drawbacks of SBR method and IT and retain their merits, a RT method for the calculation of radio coverage in urban microcellular environment using the new virtual source tree, which is based on the numerical simulation of geometrical optics (GO) and UTD and can solve some of the problems that other RT methods have, is presented.
A sampling of topics: virtual source applications to imaging and reservoir monitoring, long-range correlations in the diffuse seismic coda, P-waves from crosscorrelation of seismic noise, spurious multiples in seismic interferometry of primaries, and time-reversal acoustics in complex environments.
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