Assuming you have run the Audio Wizard and checked all the microphone connections and settings.
This is an often heard problem that people can not seem to solve - a solution is to use Yahoo Messenger which does not appear to suffer this problem.
AMD Radeon Adrenalin release date, new features, compatible graphics cards
Turn a photo into 16-bit pixel art
iMac Pro release date, UK price & specs
Comment suivre le parcours du père Noël ?