Sound leakage identification for an enclosed room using the probabilistic approach and model class selection index: An experiment

Abstract

This study presents a full-scale experiment to identify the sound leakages on a wall of an enclosed room using the probabilistic approach. This study furthers the work in companion papers [Y.Y. Lee et al., Reconstruction of the interior sound pressure of a room using the probabilistic approach, Journal of Sound and Vibration 298(4–5) (2006) 887–891; H.Y. Sun et al., Distinguishing between the interior pressures induced from two independent sources within a room using the probabilistic approach, Applied Acoustics (2007), accepted and forthcoming; T.C. Hsia, System Identification: Least-Squares Methods, Lexington Books, D.C., Heath and Company, Lexington, MA, 1977]. A model class selection index is developed and used to identify the number of leakages, which is an unknown parameter in the identification process. The experiment was conducted to prove the validity of the probabilistic approach.