Is it normal to hear a siren when some people are screaming?
Well, it happens since i can remember. I realized it some years ago when i was in elementary school, and when my classmates started screaming for some reason (like the when the lights goes off), and for a moment I stopped hearing everything, just a swinging sound like an ambulance siren. I thought it was normal, then.
But these days I was at the Physics class (it was about sound waves) and I asked my teacher why it happens. But he said he has never heard of it, and it might be a problem...
So, is it normal to hear this sound? Anyone else had this experience?