between hard of hearing and deaf? I say it's 70 dcB, my best friend says it's 75 dcB. Who's right?
Yes, I know profoundly deaf starts at around 90 dcB but dcB wise, where does audilogical hohingness end and audiological deafness begin?
Yes, I know profoundly deaf starts at around 90 dcB but dcB wise, where does audilogical hohingness end and audiological deafness begin?

myself...oh well...! At least, I learnt it from you and will use google next time should I need to search for something. (I *do* use google, but didn't think of it at the time!) :P
but my friend can but cant talk on it....weird........