I don’t know if you’ve ever had to deal with someone who is profoundly hard-of-hearing, and, for whatever reason, has no hearing aid.
It’s not their fault.
They didn’t want it that way.
But trying to hold a simple conversation, especially on the telephone, can be extremely frustrating, and can delve into the farcical.
I can’t help but think of something like this:
Speaking Clock for the Hard-of-hearing. (MP3, 19 seconds, 156 Kb)