Strange sound

[GMAN12]

Have any of you done something like screaming in Unison with someone else? There seems to be that when you do, there is a sound like somewhat of a radio and you can hear and feel the ringing in your ears like you are tuning to something. I tried this experiment 15 times with my brother and sister and was able to hear something out of it like I had tuned to some frequency in my brain. Anyways I have yet to experiment further.

[CFTraveler]

That might be matrixing- I sometimes hear things in the shower, because of the combo of sounds sets up something in my brain that sounds like people talking.
There's a name for that, but it's too early and two cups of coffee aren't doing it.

[GMAN12]

I would love to know the name. It is pretty cool though how it happens.