Original method for studying the dispersion characteristics of photonic crystals – media with a dielectric constant that varies periodically in space is considered. The based on representation wave functions and permittivity periodic medium form Fourier series their subsequent substitution into equation, which leads to formulation equation. Using latter, each value vector it possible determined...

A noise abatement method using an eigen function in conjunction with optimizer (Genetic Algorithm) under a space-constrain situation is proposed this study concerning high order wave propagation effect. An used to describe acoustical field and shorten the model four-pole transfer matrix form. The system’s estimates Transmission Loss (TL) for silencers by multiplying individual matrices.

We present a new method for unsupervised, fast speaker adaptation that combines the Eigen-MLLR transform approach with discriminative MLLR. We thereby aim to profit both from the performance improvements that are generally provided by a discriminative approach, and from the reliability that Eigen-MLLR has demonstrated in fast adaptation scenarios. We present first evaluation results on the Spok...

This paper describes a method of fingerprint classification using Eigen Block Directional Fingerprints. The method we propose dispenses off with the preprocessing stages such as segmentation, binarisation, thinning etc. We determine the block directional representation of a fingerprint and the location of the core points in a set of template fingerprints which belong to the same class. In the n...

As an invited speaker at the Institute for Advanced Study in Princeton, Manfred Eigen once stood by as his host ran through an impressive list of accolades: his work as a young researcher measuring the rates of ultrafast chemical reactions, for which he shared the Nobel Prize in Chemistry in 1967; his directorship of the Max Planck Institute for Biological Chemistry in Göttingen; his contributi...

In [1] a method of decomposing a 3D wave field into spherical harmonics (’eigen-beams’) by using spherical microphone arrays was introduced. It was further shown how the eigen-beams can be used for beamforming applications by means of a modal beamformer structure. This paper introduces a method for the unambiguous localization of multiple wideband acoustic sources in 3D space using the eigen-be...

Context. The knowledge of the point-spread function compensated by adaptive optics is of prime importance in several image restoration techniques such as deconvolution and astrometric/photometric algorithms. Wavefront-related data from the adaptive optics realtime computer can be used to accurately estimate the point-spread function in adaptive optics observations. The only point-spread functio...