I hear noises more than voices. I used to hear a phone ringing over and over for hours. Every time I would go to answer the phone it would stop, and every time I would leave the room it would re-start. It was horrible because at that point you really do feel like you're going crazy.
I randomly hear voices but they are usually just one word or laughter or things like that. These are outside voices. Inside voices I'm not so sure about any more, but that's a long story.