Navigate toStart > Settings > Control Panel > Sounds and Audio Devices.
On theAudio tab, clickVolumeon the Sound Recording Panel.
In the Options menu of the Recording Control window, enable theAdvanced Controlsoption. After you have enabled theAdvanced Controloption, you should see theAdvancedbutton on Mic Volume control.
ClickAdvancedand select the Microphone Boost setting. Make sure that Microphone Boost is turned 'ON' if your voice is audible in very low volume to others in the meeting. Turn Microphone Boost 'OFF' if your voice is too loud in the meeting.