Audio virtualization of façade acoustic insulation by convex optimization

In this study, modeling of façade acoustic insulation is addressed. The objective is predicting the acoustic behaviour of a virtual façade on an incoming audio signal based on measurements made on an actual façade and on Standardized Level Differences (DnT) curves known for both of them. In this way, a fast and concise characterization of acoustic insulation performance from outside noise can be achieved. The problem is cast as an inverse one, in which the acoustic impulse response of the actual façade must be substituted by the virtual one, taking into account, however, the constraints that are derived from the DnT analysis. Experimental results are shown to demostrate the effectiveness of the proposed procedure.