Abstract The quality of wave measurements is primary importance for the validation forecasting models, satellite calibration and validation, physics, offshore operations design climate monitoring. Validation global forecasts revealed significant regional differences, which were linked to different buoy systems used by countries. To fully understand differences between measurement systems, it ne...

We propose in this paper a spectral synthesis model to generate noisy sounds with independent control parameters for spectral density and spectral envelope. Algorithms defining in a efficient way these spectral properties from the statistical parameters of the model are presented in details. Real-time implementation is composed of many methods which can be sequenced.

We present a systematic spectral analysis of 350 bright GRBs observed with BATSE, with high spectral and temporal resolution. Our sample was selected from the complete set of 2704 BATSE GRBs, and included 17 short GRBs. To obtain well-constrained spectral parameters, four different photon models were fitted and the spectral parameters that best represent each spectrum were statistically determi...

Utilizing the Young’s double slits and Mach-Zehnder interferometer, we proposed an experimental method to measure the generalized Stokes parameters of a radially polarized random electromagnetic beam. After the partially coherent beam propagating through the Young’s double slits, the interference fringe is obtained by the help of a Mach-Zehnder interferometer consisting of apertures, quarter-wa...

We study the calculation of quasi-bound states in nMOS inversion channels and their impact on direct tunneling currents through the dielectric layer. For typical device parameters, the gate leakage in inversion is dominated by this tunneling component. However, a strong inaccuracy arises, if the eigenvalues of the closed system are used for the quasi-bound state tunneling current. We propose si...

The Estimation of Signal Parameters via Rotational Invariance Techniques (ESPRIT) algorithm is a subspace-based analysis method used in source localization or frequency estimation, originally designed in a block signal processing context. In other respects, the Projection Approximation Subspace Tracker (PAST) is a fast and robust subspace tracking method. This paper introduces a new frequency e...

High resolution echelle spectroscopy in ground-based UV is a powerful facility for study of chemical evolution of early Galaxy. An atlas of high resolution (R=60000) in the poor studied wavelength range 3550–5000 ÅÅ for 4 metal-deficient stars in the interval of metallicity −3.0 < [Fe/H ] < −0.6, effective temperature 4750 < Teff < 5900K, surface gravity 1.6 < lg g < 5.0 is produced. Details of...

Spectral parameter filtering such as RASTA [5], RASTA-like bandpass filtering and high-pass filtering operates on temporal dynamics of spectral parameters, and has been effective method to reduce channel distortions. Temporal derivatives (delta and delta-delta coefficients, that have proved as robust representation) and spectral mean normalization [4] are also equivalent to filtering that rejec...

As typical voice conversion methods, two spectral conversion processes have been proposed: 1) the frame-based conversion that converts spectral parameters frame by frame and 2) the trajectory-based conversion that converts all spectral parameters over an utterance simultaneously. The former process is capable of real-time conversion but it sometimes causes inappropriate spectral movements. On t...