Ultrasonic flaw detection using thresholdmodified S-transform

Whereas valuable so- lutions exist, for instance based on angular resampling, this paper proposed a new speed transform which inherits all the properties of the Fourier transform –

The simple example of lines in Euclidean space has suggested naming X-ray transform the corresponding integral operator, associating to a function f its integrals Rf() along

Transform´ee de Laplace et transform´ee en Z 1/2..

The instrument is currently being used to measure at high resolution the vibrational spectrum of gaseous hydrogen induced by a strong electric field.. To attack such problems

Abstract : In this paper, we contribute by the development of some signal processing techniques based on time frequency and wavelet transform in order to enhance the sensibility

If we place the bistable units of each layer relatively to the number of connections they receive from the oscillations generator, then we can see time as it passes (fig.. In

The short-time Fourier transform (STFT) and continuous wavelet transform (CWT) are intensively used to analyze and process multicomponent signals, ie superpositions of mod-

Similarly to what has been done for the time coordinate, the expression of the time-frequency representation at point pt, ν q as the sum of a mass function Φ t,ν , proved in