Results 11 to 20 of about 1,433,403 (294)
On positivity of time-frequency distributions [PDF]
IEEE Transactions on Acoustics, Speech, and Signal Processing, 1985 Consideration is given to the problem of how to regard the fundamental impossibility with time-frequency energy distributions of Cohen's class always to be nonnegative and, at the same time, to have correct marginal distributions. It is shown that the Wigner distribution is the only member of a large class of bilinear time-frequency distributions that ...
Janssen, A.J.E.M., Claasen, T.A.C.M.
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Robust Time-Frequency Distributions with Complex-Lag Argument
EURASIP Journal on Advances in Signal Processing, 2010 The robust time-frequency distributions with complex-lag argument are proposed. They can provide an accurate estimation of fast varying instantaneous frequency in the presence of noise with heavy-tailed probability density function.
Žarić Nikola +2 more
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Biomedical Engineering Advances, 2023 Time-Frequency Distributions (TFDs) support the heart sound characterisation and classification in early cardiac screening. However, despite the frequent use of TFDs in signal analysis, no comprehensive study has been conducted to compare their ...
Xinqi Bao +6 more
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Time frequency distributions of TMJ sounds [PDF]
Journal of Oral Rehabilitation, 1991 SummaryFor analysis of time‐varying signals such as the TMJ sounds, it is often desirable to know how the frequency components change with time, using methods of time‐frequency analysis. The aim of this study was to compare two of the most familiar methods for energy density representation with a newly developed technique. The sounds were recorded with
Widmalm, Sven-Erik +2 more
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An Experimental and Numerical Study on the Aerodynamic Performance of Vibrating Wind Turbine Blade with Frequency-Domain Method [PDF]
Journal of Applied and Computational Mechanics, 2021 A highly efficient nonlinear frequency-domain solution method is proposed and employed to investigate the aerodynamic and aeromechanical performances of an oscillating wind turbine blade aerofoil in this study. Extensive validations of a frequency-domain
Shine Naung +2 more
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Temporal properties of short and long gamma-ray bursts [PDF]
, 2002 A temporal analysis was performed on a sample of 100 bright short GRBs with T90 < 2s from the BATSE Current Catalog along with a similar analysis on 319 long bright GRBs with T90 > 2s from the same catalog.
Hanlon, L. +4 more
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Classification of EEG Signals Using Adaptive Time-Frequency Distributions
Metrology and Measurement Systems, 2016 Time-Frequency (t-f) distributions are frequently employed for analysis of new-born EEG signals because of their non-stationary characteristics. Most of the existing time-frequency distributions fail to concentrate energy for a multicomponent signal ...
Khan Nabeel A., Ali Sadiq
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Truncated Levy statistics for transport in disordered semiconductors [PDF]
, 2010 Probabilistic interpretation of transition from the dispersive transport regime to the quasi-Gaussian one in disordered semiconductors is given in terms of truncated Levy distributions.
Arkhipov +21 more
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Hydrological Drought Frequency Analysis in Water Management Using Univariate Distributions
Applied Sciences, 2023 The study of extreme phenomena in hydrology generally involves frequency analysis and a time series analysis. In this article we provide enough mathematics to enable hydrology researchers to apply a wide range of probability distributions in frequency ...
Cristian Gabriel Anghel, Cornel Ilinca
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Geometry of Affine Time–Frequency Distributions
Applied and Computational Harmonic Analysis, 1996 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Flandrin, Patrick, Gonçalves, Paulo
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