If your microphone isn’t being detected on your Mac, and you’ve tried these common microphone fixes, you may need to enable your microphone via the Mac Control Panel.
Open Security and Privacy Preferences
From the upper-left most apple icon in the system menu, select “System Preferences”
Then select “Security and Privacy”
Enable the Microphone for Chrome and/or the Application
Under the “Privacy” tab, select “Microphone” and ensure that “Google Chrome” and “Minerva Forum” (if using the application) are selected.