There has been an issue with Kaspersky antivirus that blocks some applications from using your microphone. Users installing Bria for the first time, or updating to a newer version of Bria, may experience their microphone no longer able to be accessed by Bria.
To resolve this, please whitelist the Bria application with Kaspersky antivirus, and reboot the computer. Bria should now be able to access the microphone.