The Core Audio in OS X is responsible for the system being able to process different sources, MIDI and the audio inputs and outputs in addition to other capabilities through a centralized structure that allows you to easily access the programs and services of the system.
Normally to configure these options we will have different ways that go through accessing the menu > System Preferences> Sound or Utilities> Audio MIDI Configuration or the settings of specific programs such as GarageBand, however if an error occurs such as blurry sound, a unexpected audio loop or just that do not reproduce anything Due to the system not recognizing the device, there are different ways to fix it.
Always the first thing before delving a little more into the problem is to check that everything is working as it should and that it is indeed a problem of the specific application and not of the system, with which possibly the reinstallation of said program can solve the problem. If this does not work, you could check if everything else is correctly configured on the system to make it work, features like bit rate or output device.
On the other hand, if all of the above did not solve the problem, perhaps we can restart the daemon that controls the audio, Coreaudiod, which is the one that really handles the entire audio system, so simply by opening a terminal and inserting the following code we can achieve it:
sudo killall coreaudiod
This process is loaded by another daemon named launchd which will instantly relaunch coreaudiod so it will have been reinitialized. Finally, if this does not have an effect, we should restart the system completely or pose a hardware problem in sound.
More information - How to see which apps use location data in OS X