Random Week long voice ban?

I don’t play much, but the other night, 3 friends and I had a halo 4 night all night. We talked in a party chat (not in game). Near the end of the night, one friend got voice banned, and he almost NEVER plays xbox. Then this morning when I logged on, I got a message saying I was voiced banned.

I’m not really upset or anything because we use party chat anyway, but what caused this?

People muted you too much.

Perhaps your kinect mic was on and transmitting to everyone?