Strange, but true, during the period I was deaf, my mind would perceive sound of any visual cues. When I either tried to read lips or comprehend what was being signed, my mind would fill in their voice as if I was actually hearing them. When I noticed this effect, I wondered if it applied to environmental sounds. Sure enough, when I went to the theater, I could have sworn I heard explosions, screaming, occasional voices off the film. Once someone told me birds were chirping outside, and my mind started chirping as if I suddenly hear them. I think one has to have had some residual hearing before going completely deaf, that's how one can perceive sound not ectually being heard. One thing though, when I met someone new during the time I was deaf, my mind instantly gave them a voice. I have never met them before, but my mind perceives it as if I heard this person before. Sometimes my mind would be like a radio playing parts of music I've heard before. It's a very strange effect.