The present invention provides, for example, a compound mentioned below as a medicament for treating or preventing the diseases induced by production, secretion or deposition of amyloid-\u03b2 proteins. The panel or module comprises a decorative top layer integral with or joined to a structural, composite molded platform. This filter function can be adapted to either remove from the subtractor output the spectral characteristics relating to the reception signal andor to emphasize in the subtractor output signal a background signal spectral content relating to the transmission signal.