The character changes the sounds that creatures or objects make. The character can create sounds where none exist (such as making trees sing), deaden sounds (such as making a party of adventurers silent), or transform sounds into other sounds (such as making a caster’s voice sound like a pig snorting). All affected creatures or objects must be transmuted in the same way. Once the transmutation is made, the character cannot change it.
The character can change the qualities of sounds but cannot create words with which the character is unfamiliar. For instance, the character can’t change the character's voice so that it sounds as though the character is giving the command word to activate a magic item unless the character knows that command word.
A spellcaster whose voice is changed dramatically (such as into that of the aforementioned snorting pig) is unable to cast spells with verbal components.