This investigation proposes a possibility to synthesise a true 3D sound field over loudspeakers. A new approach concerning the distance coding is presented. We tried to combine the benefits both using the Wave Field Synthesis (WFS) approach and Higher Order Ambisonics (HOA). Therefore the proposed system can be divided into two main parts. Firstly the determination of the driving functions of t...

A major issue of machinery fault diagnosis using vibration signals is that it is over-reliant on personnel knowledge and experience in interpreting the signal. Thus, machine learning has been adapted for machinery fault diagnosis. The quantity and quality of the input features, however, influence the fault classification performance. Feature selection plays a vital role in selecting the most re...

The theory of wave field synthesis is traditionally derived based on the Kirchhoff-Helmholtz integral equation for bounded volumes with continuous secondary point source distributions on the boundary area. Usually, a secondary source distribution on a boundary contour is used in practical implementations and the theory is adapted by reducing the geometry to two dimensions, employing secondary l...

The objective of this study was to determine the effects of supplemented selenium (Se) on plasma cortisol, red blood cell glutathione peroxidase activity (RBC GSH-PX-1), concentration of immunoglobulin G (IgG) and body weight in pneumonic suckling calves. Ten Holstein suckling male calves were randomly allocated to two groups and fed either unsupplemented milk (control) or with milk supplemente...

Five acoustic Doppler current prooler (ADCP) moorings were deployed across the central West Florida Shelf (WFS) during 1995 and early 1996, spanning the 300 m to 30 m isobaths. Current speeds are found to generally decrease toward shallower depths. Neighboring ADCPs frequently record currents owing in opposite directions. Altimetry from TOPEX-Poseidon is used to indicate the position of the Loo...

Demand for hydropower is increasing, yet the water footprints (WFs) of reservoirs and hydropower, and their contributions to water scarcity, are poorly understood. Here, we calculate reservoir WFs (freshwater that evaporates from reservoirs) and hydropower WFs (the WF of hydroelectricity) in China based on data from 875 representative reservoirs (209 with power plants). In 2010, the reservoir W...

When using a laser guide star (LGS) adaptive optics system, quasi-static aberrations are observed between the measured wavefronts from the LGS wavefront sensor (WFS) and the natural guide star WFS. We model these LGS aberrations. c © 2007 Optical Society of America OCIS codes: (010.1080) Adaptive optics;(010.7350) Wave-front sensing.

In this paper a real-time system for immersive audio applications is presented. Sound sources are recorded using a microphone array whose beam is steered according to the output of an acoustic source localization and tracking system. The output of the beamformer (BF) along with the source position updates are continuously transmitted to a wave field synthesis (WFS) system. By using WFS the soun...

The well-founded semantics (WFS) for logic programs is one of the few major paradigms for closed-world reasoning. With the advent of the Semantic Web, it is being used as part of rule systems for ontology reasoning, and also investigated as to its usefulness as a semantics for hybrid systems featuring combined openand closed-world reasoning. Even in its most basic form, however, the WFS is unde...