Numéro
J. Phys. IV France
Volume 04, Numéro C5, Mai 1994
3ème Congrés français d'acoustique
3rd French conference on acoustics
Page(s) C5-1363 - C5-1366
DOI https://doi.org/10.1051/jp4:19945303
3ème Congrés français d'acoustique
3rd French conference on acoustics

J. Phys. IV France 04 (1994) C5-1363-C5-1366

DOI: 10.1051/jp4:19945303

Analyse d'un signal pseudopériodique amorti et bruité par une méthode d'interpolation spectrale

B. DAOUD1 and D.R. RAJAONA2

1  Laboratoire de Mécanique des Fluides, Division Hydrodynamique Navale, URA 1217, Ecole Centrale de Nantes, 1 rue de la Nöé, 44072 Nantes cedex 03, France
2  Laboratoire de Mécanique des Fluides, Université du Havre, Quai Frissard, BP. 265, 76055 Le Havre cedex, France


Abstract
The work presented in this paper deals with the decomposition of pseudoperiodic signals in periodic components by using a spectral interpolation method [1, 2]. This method is applied to the autocorrelation of a pseudoperiodic signal instead of the signal itself. Results obtained by the present method are not very sensitive to the noise effect and are generally more accurate than those directly obtained by using the spectral interpolation method on the signal.



© EDP Sciences 1994