In recent years, there has been a trend towards digitization and integration of industrial systems, including PAGA systems. As a result, many PAGA systems are now being upgraded to IP (Internet Protocol) systems.

The right level of sound for a public address system can depend on several factors, including the size and shape of the space, the number of people in the audience, and the acoustics of the room.

The Theory of Acoustic Propagation is a branch of Physics that studies the behaviour of sound waves, as they travel through different media such as air, water, and solids.