^ I was just going to say it would be funny if nobody replied to this thread.
Maybe your voice is too soft or quiet. This is my problem in group settings.
The amount of times my drama tutor told me to project, lol. The weird thing is, I always think I *am* projecting and being loud enough, but I still get told I'm quiet and to speak up. I used to get solos and stuff in choir so I know I can project my voice in that sense, so there's probably a psychological factor that makes it different when it comes to talking.