System Preferences>sounds displays the page which says
Internal Microphone. (type) Built in.
My FaceTime contacts cant hear me when I call them. The internal microphone volume slider is on full i but the levels indicator doesn't move when I speak However, if i tap the screen i can see the levels increase and decrease
I have dictation turned on. Nothing is on mute
I've looked for the where the micro[phone should be (circle with lots of little holes), but can't find it.
Looking in system preferences>sounds I've checked the ? icon which has a section
"you can use your computer's internal microphone, your display microphone, IF IT HAS ONE (my caps)
Does the Internal Microphone actually exist on this model of iMac