3rd French conference on acoustics
J. Phys. IV France 04 (1994) C5-195-C5-198
Absorption optimale par contrôle actifD. 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
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