To troubleshoot microphone problems, follow these steps:

 

· Check options in your OS and in program that you use:

1. Check volume and sensitivity level;

2. Check selected device (From the Apple menu, choose System Preferences and then click Sound);

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· If the settings are OK, try to reset NVRAM:

1. On your Mac, choose Apple menu > Shut Down.

2. Locate the following keys on the keyboard: Option, Command, P, and R. You will need to press and hold these keys simultaneously in step 4.

3. Turn on your Mac.

4. Immediately press and hold the Option-Command-P-R keys, before the black screen with the Apple logo appears. Continue pressing the keys until your Mac restarts, about 15 seconds.

5. Release the keys.

 

· On your Mac, choose Apple menu > System Preferences, click Security & Privacy, then click Privacy.

· Select Microphone.

· Select the checkbox next to an app to allow it to access the microphone.

· Deselect the checkbox to turn off access for that app.

· If you turn off access for an app, you’re asked to turn it on again the next time that app tries to use your microphone.