Numéro
J. Phys. IV France
Volume 04, Numéro C5, Mai 1994
3ème Congrés français d'acoustique
3rd French conference on acoustics
Page(s) C5-1075 - C5-1078
DOI https://doi.org/10.1051/jp4:19945236
3ème Congrés français d'acoustique
3rd French conference on acoustics

J. Phys. IV France 04 (1994) C5-1075-C5-1078

DOI: 10.1051/jp4:19945236

Identification de la nature de milieux stratifiés à partir de l'écho renvoyé

A. DJELLOULI, B. LATU and J.F. TROUILHET

Laboratoire d'Acoustique de Métrologie d'Instrumentation, 38 rue des 36 Ponts, 31400 Toulouse, France


Abstract
Absorbing materials modelisation as received much recent attention including domains like : aero-acoustic (identification and classification of different materials,...) underwater acoustic (various types of sea beds, hydrobiology,...). We present in this paper two methods to estimating pertinent parameters from material reflections : - reflector response when a sinusoidal excitation is applied (narrow band). - impulse response of stratified environments (wide band).



© EDP Sciences 1994