Interestingly, I have SCDS [0] in one ear which causes a similar effect by adding an echo of speech and awareness of inter-cranial sounds. And stuttering (silent block related to diaphragmatic incoordination, exacerbated by anxiety). You can train yourself to just talk over it, so it's not really a "STFU ray gun."
0. https://www.hopkinsmedicine.org/health/conditions-and-diseas...