MATCHED TIME-FREQUENCY REPRESENTATIONS AND WARPING OPERATOR FOR MODAL FILTERING

Grégoire Le Touzé (1) , Jerome I. Mars (1) , Jean-Louis Lacoume (1)

1 LIS - Laboratoire des images et des signaux

In waveguide, pressure signals break up into modes. This paper exposes two signal processing tools to realise a mode filtering adapted to guided waves. The first one is a timefrequency representation invertible on which filtering is possible. The second is an axe warping operator. We test both methods on real data and compare performances on synthetic dataset. We finally show that these two tools supplement each other.

Domaines: Traitement du signal et de l'image [eess.SP]; Traitement du signal et de l'image [eess.SP]

Grégoire Le Touzé, Jerome I. Mars, Jean-Louis Lacoume. MATCHED TIME-FREQUENCY REPRESENTATIONS AND WARPING OPERATOR FOR MODAL FILTERING. EUSIPCO, 2006, Florence, Italy. pp.0. ⟨hal-00275437⟩