Great Voice

Regular 
The subject can be heard clearly and distinctly by everyone he can see, even at a great distance. The subject can choose to be heard by only a few chosen targets if he specifies before speaking (those within ordinary earshot will hear him whether he wants it or not, of course).
Note that, for instance, one could not cut off the subject’s voice by ducking behind a rock. This spell is widely used by ship captains, military commanders, and public speakers. The sound may become irritatingly loud if the original voice is loud, but will not deafen or cause harm.

Duration: 1 minute. 
Cost: 3 to cast. 1 to maintain. 
Time to cast: 2 seconds. 
Prerequisites: Voices and Thunderclap.

Item 
Staff, wand, helm, or jewelry; only affects the wearer.  
Energy cost to create: 200.