Ultrasonic burst

The user of the spell activates the tuning fork by striking it (or against it) with a hard object. After that, he brings the ringing tuning fork to his mouth and emits a loud high-pitched cry that resonates with the tuning fork.
A cone-shaped shockwave erupts from the tuning fork, shattering it to pieces, spreading up to 100 feet, and dealing crushing sonic damage.
Hearing creatures caught in the spell's area must roll a CON saving throw or become deafened for (spell level)*d6 rounds.
Fragile and breakable objects that fall into the area of effect of the spell crack and/or shatter.
The user of the spell can choose the area of effect of the spell at will - a cone-shaped shockwave that engulfs 45 degrees and deals (spell level)*d10 bludgeoning sonic damage to all creatures in the area, or a narrow sonic beam that travels in a straight line from the caster and deals 2* (spell level)*d10 points of bludgeoning sonic damage.
Solid creatures made from bones and rock receive an additional d10 points of damage. 
Crystalline creatures receive an additional 2d10 points of damage. 
Targeted creatures must make a CON save to receive the half of damage and avoid deafness.
Casting the spell places significant strain on the user's vocal apparatus, so using the spell again in less than 1d4 rounds can cause numbness for 1d6 rounds if the user fails the Сonstitution saving throw.