Have you ever heard what sounds like an instrumental song playing, or people having a discussion that sounds like banter on a radio station? I read in a blog once that people with Bipolar often have this symptom.

I have on occasion heard these sounds when there is no radio on anywhere in the house, and there no TV or radio sounds outside, either.

I never hear anyone talking to me through the radio, it's just sounds. If I hear "banter" it is not actual words I hear - it sounds muffled and in the distance. I think it is much different than hearing voices.