Silence

For the duration of the spell, no sound can be created within or pass through a 20-foot-radius sphere centered on a point of your choice within range of the spell. Any creature or object entirely within the sphere is immune to thunder damage, and creatures are Deafened while entirely inside it. Casting a spell that includes a verbal component is impossible inside it.

At Higher Levels. When you cast this spell by spending Mana points equal to a 5th-level spell, the radius of this area becomes 30 feet, and creatures within it are immune to vibrational damage.