Integrated into Professor Vitor Abrantes’s team, SOPSEC was involved in the development of acoustic behavior models that gave rise to unique solutions. The ceiling and the back wall of the Great Covered Assembly stands out with about 10,000 seats. The confessionals, where privacy prevailed. The two chapels for about 400 people, where it was possible to project completely different spaces with respect to the answer passive, yet they have identified equal word intelligibility.