[lincolnbryant]

Not a linux user, but a decent external mic or headset is going to make the most difference here, its largely a factor of the tiny internal mics in laptops. They will also do better with sound insulation, internal are not well insulated from the fan, keyboard etc.

[pbhjpbhj]

Tone changes can help with audibility. I have a really low voice, it doesn't carry well over voice-chat; I'd push my register up a few notes. But yes, filtering tweety mic sounds from other people would be good too.