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).

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.

'Reliable, Redundant, System-Wide Routing Control' Is Here

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.

3D inspection of aerospace composites

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.

Award-winning Filipino hackers bid for US and global business

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:

Enhancing the directivity of phased array antennas using lens-arrays

Cloud computing is simply defined as access to processing power from a virtual source.

Choosing a cloud-based platform: cloud computing? Software as a service (SaaS)? What does it all mean?

Allow all data sources to act as a single virtual source, making it easier to deliver data in multiple ways for different consumers.

Data virtualization provides agility and scale to Compassion International

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 quasi three-dimensional ray tracing method based on the virtual source tree in urban microcellular environments

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.

Seismic interferometry; history and present status

The key idea is that a direct path from each virtual source has the same directionality and length as a specular reflection path.

Investigation of adequacy of the analytical model of sound field in rectangular room/Akustinio lauko staciakampiame kambaryje analizinio modelio adekvatumo tyrimas

Source locations were performed by 1) determining arrival sequence of Lamb waves to the three sensors using the resonance frequencies, 2) finding arrival time differences of A0-mode at a selected frequency (120 kHz) and 3) scanning for a virtual source utilizing the constant group velocity of 1280 m/s for this frequency.

Utilization of cascade optical fiber AE system for source location of lamb waves through a cross-ply CFRP plate

These results indicate that in order to prevent localization errors with the 3D auditory display, the sound produced by the virtual source should have a relatively long duration and head movements should be allowed.

Application of a three-dimensional auditory display in a flight task

3 can hook into existing provisioning solutions, such as SailPoint, providing the benefit of workflow and business logic with the added bonus of a one-stop connection to a virtual source.

Radiant Logic Announces the Release of RadiantOne Virtual Directory Server Context Edition 5.3