Evocation [Sonic]
Level: Bard 3
Components: V, S
Casting Time: 1 standard action
Range: Medium (100 ft. + 10 ft./level)
Area: 20-ft.-radius spread
Duration: Instantaneous
Saving Throw: Fortitude partial
Spell Resistance: Yes
A deafening blast of sound, louder than thunder and more piercing that the shrieks of the damned, erupts where you point.
All creatures in the area are permanently deafened. A successful Fortitude save reduces the duration of the deafness to 1 round.
If a subject is already under the effect of painful echoes when attacked by deafening blast, the two spells interact to create a greater effect. In addition to being deafened on a failed save, the subject is stunned for 1 round.
Source: Complete Mage, page 101.