What is Voice ?
Voice is (noun) 1. a sound made when you speak or sing I didn’t recognise his voice over the telephone. The chairman spoke for a few minutes in a low voice. 2. to lose your voice not to be able to speak She’s got a sore throat and has lost her voice. to raise your voice to start to shout at the top of your voice very loudly He suddenly said ‘Look at that funny hat’ at the top of his voice. (verb) to tell what you think She voiced her objections to the plan.
source: Easier English, Student Dictionary Upper Intermediate Level