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Muffled audio input AND output on Mac laptop


Hello - suddenly one day recently, my output audio (what others heard) became very muffled.  They could hear me only if I shouted.  Then today I tried headphones in a meeting, thinking maybe that could fix the speaking issue.  It did not.  However, upon removing the headphones, now the speaker output is very low.  I can now barely hear the other participants.  I have an older Mac Pro laptop, running High Sierra.  It was all working fine and only recently has this audio issue.  And only with zoom.  I have updated zoom, and checked all audio settings, both on the mac and on the zoom app.  I reset the NRAM or whatever at the Apple store.  Any suggestions?   Thanks!!  This is making zoom unusable.  



I also have a thread about this same problem. The only resolution offered (so far) is to do a clean uninstall of the Zoom package. This did not work for me. The only thing that works - and is not an acceptable solution - is to pop in my AirPods. This somehow makes the speakers and microphones in the Mac work. Oddly, then the AirPods become non-functional, they just seem to trigger the Mac’s speakers and mic to work properly.