The interesting and relevant parts are a few paragraphs down: > That natural problem, he said, was exacerbated in the post-Vatican II period by a tendency to i

The interesting and relevant parts are a few paragraphs down: > That natural problem, he said, was exacerbated in the post-Vatican II period by a tendency to install speakers in churches that emit sound simultaneously from a variety of different points, which, he said, means that the acoustical centrality of the altar becomes lost. > As a result, Carbone said he designed a system in which sound is not projected from all the speakers inside the basilica simultaneously, but passes through roughly 80 speakers with millisecond delays regulated by digital technology, creating the impression of sound originating at the altar and then spreading out through the church.