Sound Barrier

Source book: Stolen Souls

A variant of the Silence spell (p. 291, SR5), Sound Barrier creates a perimeter of silence around the area of effect (rather than creating a mass area of silence). Those inside cannot hear outside noises but can hear sounds within the globe and vice versa. Only sounds crossing the border are affected; those are affected in the same manners as the Silence spell. This spell also affects technological devices, infrasound, and ultrasound.