You know the weird sounds we hear inside our heads when we're in SP? For me it always sounded like an electronic scream that went louder and louder until it physically hurt me. But more recently the SPs I experience between dreams are much softer and instead of the loud screechy screams, I get to listen to what seems to be radio broadcasts. One time I got a Bollywood radio station playing some songs, some other time I got to hear a transmission with some guy speaking in english and clearly from the 1940/50's.
It was weird and it made me think that maybe the weird electronic-like sounds we hear are actual radio transmissions out there in the air, that our mind is tuning in accidentally, but whenever the frequency is not totally right on our mind-receiver, we just hear noise.
I know it sounds crazy, but it also sounds cool :fro: