Sound reflection from a fine board array of infinite length in oblique incidence.

an infinite planar array of rectangular microstrip patch antenna analysis

the methods which are used to analyze microstrip antennas, are divited into three categories: empirical methods, semi-empirical methods and full-wave analysis. empirical and semi-empirical methods are generally based on some fundamental simplifying assumptions about quality of surface current distribution and substrate thickness. thses simplificatioms cause low accuracy in field evaluation. ful...

Estimation of Sound Source Direction Using Parabolic Reflection Board

This paper presents a new sound-source-direction estimation method using only a single microphone with a parabolic reflection board. In our previous work [1], we proposed GMM (Gaussian Mixture Model) separation for estimation of the sound source direction, where the observed (reverberant) speech is separated into the acoustic transfer function and the clean speech GMM. However, the previous met...

Oblique Incidence Plane Wave Scattering from an Array of Circular Dielectric Cylinders

Abstract—A rigorous semi-analytical solution is presented for electromagnetic scattering from an array of circular cylinders due to an obliquely incident plane wave. The cylinders are illuminated by either TMz or TEz incident plane wave. The solution is based on the application of the boundary conditions on the surface of each cylinder in terms of the local coordinate system of each individual ...

Evaluation of an Active Microphone with a Parabolic Reflection Board for Monaural Sound-Source-Direction Estimation

Monaural sound-source-direction estimation using the acoustic transfer function of a parabolic reflection board.

This paper presents a sound-source-direction estimation method using only a single microphone with a parabolic reflection board. A simple signal-power-based method using a parabolic antenna has been proposed in the radar field. But the signal-power-based method is not effective for finding the direction of a talking person due to the varying power of the uttered speech signals. In this paper, t...