Analysis of the acoustic signal backscattered by a multi-layer structure with the spectrogram and the wavelet time-frequency methods

Measurements of dv/v in synthetic tests incorporating changes in source frequency content but no actual velocity change: (a) using the stretching method at different lapse time and

L’archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des

Using this new method, we detect, with a high significance, that the LRGs in our sample are preferentially located close to the centres of shell-like structures in the density

The geometric model is devoted to offer a nice framework for showing the main theorem on the existence of a wandering stable component and which applies to the following situation:

Prevalence of acute myocardial infraction and other serious diagnoses on patients presenting to an urban emergency department with chest pain. Performance assessement of an

The present observations showed that over the large source domain considered around a mixing layer, the acoustic pressure signal has not its source at a specific flow event or

Our contribution is to propose and assess a navigation method for walking inside a scale-one 3D system based on gait analysis by feature matching and adapting mother wavelet from

To obtain the resonance spectrum; (i) in first time a theoretical temporal signal is calculated from the backscattered spectrum with an inverse Fourier transform, it corresponds