Personal Sound Amplifiers (Psa)

[kowalskil]

Personal Sound Amplifiers (PSA)

Hearing aids are very expensive, typically from $3000 to $6000 a pair. 

But some people might postpone wearing them, for many year. 

I describe this alternative at my university website:

http://csam.montclair.edu/~kowalski/aps.htm

Feel free to share this short essay with others.

Comments will be appreciated. 

Ludwik Kowalski (see Wikipedia)