I live with 3 people who do this, DH, Noah and Bob, and the only thing I've found that works is not listening. Then when they make it clear that the audio they emitted was meant for me I just go "oh, I did not hear you say my name". Next time I'll hear "Nora? Do you remember where the .....". Works like a charm on everyone except DH. He'll forget after a while, but then I'm not obligated to listen to each and every noise he produces.