Booming Voice

A wave of thunderous force sweeps out from your mouth. Each creature in a 30-foot cone originating from you must make a Constitution saving throw. On a failed save, a creature takes 3d8 thunder damage and is deafened. On a successful save, the creature takes half as much damage and isn't deafened.

The spell is audible out to 300 feet.

At Higher Levels. When you cast this spell using a spell slot of 2nd level or higher, the damage increases by 1d8 for each slot level above 1st.