The cause may be a defective/disabled microphone or that it is currently being used by another application.
Please upgrade your browser or install another one. Your browser does not support features for accessing media devices.Most likely, this means that your microphone is not working properly or your browser cannot access it. Could not find a microphone, however there are other media devices (like speakers or webcams).Just remember that in order to start your microphone you need to allow our website to use it. Try to reload this page or open it using another browser.
It is very likely that your browser does not allow access to these devices. Changing the microphone will reset the current process.