Normally, when filming, you should have a script. If you're doing this without scripting, there 'is' a way you can manage it without having to be able to hear your own voice in world. Mind you, I have never tried this my self, but it sounds like it would work. Basically, you run a program in the background to record your own voice, while still recording the voices of the others, and just communicate as you would normally. Then when the process is over, you mix the audio together, inserting your voice where it belongs.
I'm sure with the right program, it would be possible to just record the au