This paper discusses the problem of estimating the population spectral distribution from high-dimensional data. We present a general estimation procedure that covers situations where the moments of this distribution fail to identify the model parameters. The main idea is to use generalized functional expectations as a substitute for the moments. Beyond the consistency, we also prove a central l...

Vocal effort changes induce various modifications to acoustic characteristics of speech. In this paper we investigate the impact of raised vocal effort on the speech spectrum. In particular, we look at different spectral parameters and compare the changes. The parameters we take into account are spectral tilt, spectral center of gravity, energy ratio and spectral moments. We carry out tests on ...

This paper describes a new approach to spectral response computation of an arbitrary 2D waveguide. This technique is based on the Tangential Vector Finite Element Method (TVFEM) in conjunction with the Asymptotic Waveform Evaluation (AWE) technique. The former is used to obtain modes characteristics for a central frequency, whereas the latter employs an eecient algorithm to compute frequency mo...

The fractional Fourier transform can be considered as a rotated standard Fourier transform in general and its benefit in signal processing is growing to be known more. Noise removing is one application that fractional Fourier transform can do well if the signal dilation is perfectly known. In this paper, we have computed the first and second order of moments of fractional Fourier transform acco...

The formation of local magnetic moments and its size effect in oneand three-dimension finite systems with magnetic impurity are investigated based on the Anderson hybridizing model in real space. By the exact diagonalization within the self-consistent mean field approximation, it is found that as contrast to that in infinite system, the formation of the local magnetic moment in finite system ma...

In this study, we derive a fast, novel time-domain algorithm to compute the nth-order moment of the power spectral density of the photoelectric current as measured in laser-Doppler flowmetry (LDF). It is well established that in the LDF literature these moments are closely related to fundamental physiological parameters, i.e. concentration of moving erythrocytes and blood flow. In particular, w...

This paper is dedicated to Arthur Krener – a great researcher, a great teacher and a great friend – on the occasion of his 60th birthday. In this work we study the generalized moment problem with complexity constraints in the case where the actual values of the moments are uncertain. For example, in spectral estimation the moments correspond to estimates of covariance lags computed from a finit...