MicSwitch tool lets users mute or unmute their system microphone using a predefined system-wide hotkey. So, any program that uses a microphone can be stopped in an instant. Launch MicSwitch.

Right-click the tab and select Mute Tab from the dropdown menu. 2. Click the speaker icon on the tab. 3. Hit Ctrl + M on your keyboard. For Opera and Safari, the first two methods listed above ...