Title :
Differential reassignment
Author :
Chassande-Mottin, E. ; Daubechies, I. ; Auger, F. ; Flandrin, P.
Author_Institution :
Lab. de Phys. de l´´ENS, Lyon, France
Abstract :
A geometrical description is given for reassignment vector fields of spectrograms. These vector fields are shown to be connected with both an intrinsic phase characterization and a scalar potential. This allows for the generalization of the original reassignment process to a differential version based on a dynamical evolution of time-frequency particles.
Keywords :
signal representation; spectral analysis; time-frequency analysis; differential reassignment; dynamical evolution; geometrical description; intrinsic phase characterization; scalar potential; spectrograms; time-frequency distributions; time-frequency particles; vector fields; Distributed computing; Equations; Fourier transforms; Mathematics; Spectrogram; Time frequency analysis; Two dimensional displays;
Journal_Title :
Signal Processing Letters, IEEE
