TYPE OF HEARING AID        DESCRIPTION
      
      BEHIND THE EAR             Most visible; a case for components hooks 
      (BTE)                      behind ear; connects to earpiece via small tube;
                                 can be digitally programmed to regulate frequencies 
                                 so listener can distinguish sounds better 
      IN THE EAR                 Sits in the hollow of the ear; needs more       
      (ITE)                      maintenance than a BTE aid but can be digitally 
                                 programmed
      IN THE CANAL               Barely noticeable; requires frequent battery   
      (ITC)                      change and cleaning; cannot be digitally programmed 
                                 so amplifies all sounds equally
      
      DATA: BUSINESS WEEK
      
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