Vibration analysis is a challenging technique to assess the quality of agro-products in a non-destructive way. Recent research shows that the technique is feasible for off-line (desktop) measurements. The step towards an on-line implementation requires research on the robustness of the...

We analyze the problem of suppressing the unwanted component of a time-harmonic acoustic field (noise) on a predetermined region of interest. The suppression is rendered by active means, i.e., by introducing the additional acoustic sources called controls that generate the appropriate...