Active Noise Control (ANC) is a buzzword in acoustics today. Applied correctly, ANC methods have proved to be better insulators in low frequency noise, than usual absorbers. However, when a broad band noise needs to be controlled, such active methods have di±culties at high frequencies. The main objective of this master thesis is to minimize Acoustic Energy Density (AED) of a broad band signal by means of an active control method. A comparison between such method and an absorption one is done, so as to determine which has better broad band behavior. Furthermore, experimental results are compared with theoretical simulations.

Projecte fet en col.laboració amb la Technischen Universitat Berlin