XPost: comp.misc   
   From: et472@ncf.ca   
      
   On Tue, 25 Apr 2017, geoff wrote:   
      
   > On 24/04/2017 7:45 PM, Trevor wrote:   
   >   
   >>   
   >> Secondly if we are to take your statement literally then nobody should   
   >> wear ANY hearing aid for fear of damaging what is left of their hearing   
   >> at any frequency!   
   >>   
   >> I'm surprised people bother to make these comments without knowing   
   >> anything about hearing aids.   
   >>   
   >>   
   > And despite me making no claim to know anything about audiology , it would   
   > still vastly surprise me that the simple remedy for a loss at a particular   
   > band is solely to boost the shit out of that band. 14k, 8k, 3k, or whatever.   
   >   
   What I remember is that the ear has two or maybe more levels of nerves to   
   detect sound, because otherwise the ear would be required to handle too   
   wide a dynamic range. I'm not sure how that translates to loss at higher   
   frequencies, but from what I was told, one could lose the ability to hear   
   low level sounds, but still hear loud sounds fine.  This was decades ago,   
   and maybe it was a simplification for "the layman".   
      
   I don't think you can boost the high frequencies by too much, and expect   
   "perfect" hearing.  One has to live with something in between "original"   
   and bad hearing.   
      
   Someone mentioned their parents or grandparents getting used to hearing   
   aids, and giving up. Apparently that's common, one adjusts to what there   
   is, so hearing aids can take time to adjust to. So I assume people adjust   
   to the level of improvement that a hearing aid can offer.   
      
   The electronics don't or didn't provide the same level of dynamic range as   
   regular ears, so AGC, automatic gain control, kicks in somewhere in   
   hearing aids, so that's another thing one has to adjust to.   
      
      Michael   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)