Acoustic Scattering in Duct With a Chaotic Cavity

This work is dedicated to the experimental analysis of the statistics of the scattering of sound by a complex cavity in a duct. It is shown that the application of the Random Coupling Method based on the Random Matrix Theory can explain very well the fluctuations of reflection due to those cavities. An emphasis is made in this study to the effect of dissipation and of flow on the statistics of the scattering coefficients of the cavity.