If not a med issue or you can't find a cell app.
Maybe some of the assistive devices websites might have something that will work?
here's a few -
http://www.voiceaerobicsdvd.com/voice_amplifier
http://www.soundbytes.com/Merchant2/...ice-amplifiers
http://www.independentliving.com/pro...e%20Amplifiers
http://www.hearmore.com/categories/1...mplifiers.html
I didn't see anything related to products on Fox's PD site....
Maybe some of the other PD sites might have links to good products & reputable sites??
If not they should add them, so PD patients & family members can locate good products easily when the need arises..
If you find a good product/site it can be added to the sticky thread here too.