Numéro
J. Phys. IV France
Volume 04, Numéro C5, Mai 1994
3ème Congrés français d'acoustique
3rd French conference on acoustics
Page(s) C5-195 - C5-198
DOI https://doi.org/10.1051/jp4:1994537
3ème Congrés français d'acoustique
3rd French conference on acoustics

J. Phys. IV France 04 (1994) C5-195-C5-198

DOI: 10.1051/jp4:1994537

Absorption optimale par contrôle actif

D. THENAIL, M.A. GALLAND and M. SUNYACH

Laboratoire de Mécanique des Fluides et d'Acoustique, URA 263 du CNRS, Ecole Centrale de Lyon, UCB-Lyon I, BP. 163, 69131 Ecully cedex, France


Abstract
We present in this paper the use of active control techniques to enhance absorbent materials performances. The weak low frequency efficiency, which is usually observed even when particularly bulky amounts are used, is shown to be improved by an active support. We firstly determine the maximum absorption criteria, and present active control experimental results.



© EDP Sciences 1994