You can control which apps to allow to access the microphone. If you are having a microphone issue when you are trying to use a specific app (such as Skype, Hangouts, etc). You can restart your Mac by going to Apple menu > Restart. Simply restart your Mac to see if your problem is fixed.
Does the input level moves when you say something? If so, that means that your microphone is working. On your Mac, go to Apple menu > System Preferences > Sound > Input and select a mic (built-in internal one usually) and check the input levels. If your microphone is not working as expected, these websites and apps will be useless. Several apps you use and several websites you visit can use the microphone on your Mac to capture or record sound. Your microphone is an important part of your Mac. The cause of these problems may be the microphone. For example, Siri may not be able to detect your voice other people may not be able to hear you during a FaceTime call or you may not be able to record audio. This article explains what you can do if you are having trouble with your microphone features on your Mac.
