Deafening Clang

At your touch, the weapon rings like a struck tuning fork. The sound diminishes until it’s imperceptible, but when you touch the weapon you can feel the vibration.

(Spell Compendium, p. 59)

Originally posted on D&D tools

Transmutation [Sonic]
Level: Paladin 1,
Components: V, S, DF,
Casting Time: 1 swift action
Range: Touch
Target: Your weapon
Duration: 1 round
Saving Throw: Fortitude partial; see text
Spell Resistance: No

You empower the touched weapon with magic that causes it to emit a loud clang when it is struck against a hard surface, such as a floor, wall, or creature. The weapon deals 1d6 points of sonic damage with each successful hit, and any creature struck by the weapon must succeed on a Fortitude saving throw or be deafened for 1 minute.