Most people, male and female, lose their high frequency hearing as we age, men faster than women, for some reason..........
A New Ring Tone Teachers Can’t Hear:
http://www.cbsnews.com/news/a-new-ring-tone-teachers-cant-hear/
Well we both wear twin hearing aids. His is for high freq from 20 yrs of flight deck noise, mine is low freq due to a botched inner ear perfusion surgery for Meneire’s. I sincerely doubt either can be fixed.
Voice pitch has to be right. He can hear the mail truck outside, in the house with the door closed, I couldn’t hear the weather alarm last night.