[HN Gopher] A DIY Audio Induction Loop for the Hard of Hearing
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       A DIY Audio Induction Loop for the Hard of Hearing
        
       Author : kevinphy
       Score  : 39 points
       Date   : 2020-10-10 18:19 UTC (4 hours ago)
        
 (HTM) web link (spectrum.ieee.org)
 (TXT) w3m dump (spectrum.ieee.org)
        
       | jws wrote:
       | That takes care of half of the problem.
       | 
       | You will be a complete hero if you write up how to do "blind
       | signal separation" with an economical microphone array. Such a
       | device can be ceiling mounted and use copious heaps of
       | mathematics to locate speaking people and isolate just their
       | voice, attenuating other room noise and echos.
       | 
       | There are likely affordable hardware candidates, the $55
       | ESP32-Lyra-TD development board with 3 microphones or the MATRIX
       | Voice with 8 at $75. Both have special hardware for the signal
       | processing.
        
         | ampdepolymerase wrote:
         | You will almost certainly need a neural accelerator for this,
         | neural networks are currently the only known effective solution
         | for cocktail party problems.
        
       | deadlyllama wrote:
       | In my recent experience in churches in New Zealand, newer hearing
       | aids either don't have T-coils, or the audiologist has to turn
       | them on (and hasn't), or the hearing aid owner does but doesn't
       | know how.
       | 
       | 10-20 years ago everyone had a T-coil and loop systems were a
       | great option. Now they're not.
        
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       (page generated 2020-10-10 23:00 UTC)