XPost: alt.home.repair, sci.electronics.design   
   From: HapilyRetired@fakeaddress.com   
      
   On 9/26/2023 11:56 AM, micky wrote:   
      
   >   
   > It's also strange, IMO, that voices only get a little louder but other   
   > noises get far louder, like even the tapping of the keyboard keys or the   
   > rustling of paper. Maybe it's that logarithmic thing about sound, or   
   > maybe the little noises don't really get more louder but they surpass   
   > some level of loudness at which my mind doesn't ignore them anymore.   
   > Maybe we learn to ignore little noises below a certain level.   
   >   
   >   
      
   This is often because of microphone placement issues within a device and   
   absence of hi-tech filtration both in items such as your yoke device and   
   in lower tech hearing aids.  You end up with essentially omnidirectional   
   non-selective amplification of all sound in the environment.  The higher   
   tech (but more expensive hearing aids) have adjustable amplification   
   levels for both the microphones designed and placed to emphasize sound   
   in front of and somewhat to the side of the user and for the microphones   
   that are designed and placed to give the user help hearing sounds behind   
   (both for sound location and safety purposes).  In addition, there can   
   be multiple adjustable filters for frequency accentuation/attenuation,   
   for damping of short duration, high amplitude sounds, etc. etc.   
   However, unless and until properly adjusted, the hi tech hearing aids   
   are likely produce results no better than the cheap stuff.  That's why   
   the settings need to be tweaked and personalized by a skilled   
   audiologist in response to the detailed information provided by the   
   user.  This often takes 2-4 visits spaced about a week apart for   
   reasonable trial after each adjustment.  Also, apparently the brain   
   needs some time to accommodate to the new characteristics of the   
   auditory input.  It's more complicated and difficult to obtain optimal   
   results than with a visit to the optometrist for a visual exam and Rx   
   for typical visual correction with eyeglasses.   
      
   --- SoupGate-Win32 v1.05   
    * Origin: you cannot sedate... all the things you hate (1:229/2)