Dr. Vishal Rao, a Bangalore based oncologist, has developed a voice prosthesis that can help throat cancer patients speak after surgery. And unlike the extremely expensive ones available in the market today, this device will cost just Rs. 50 (or $1).
http://www.thebetterindia.com/41251/dr-vishal-rao-affordable-voice-prosthesis/
I've learned that similar device already exists, but it costs much, much more.
http://www.thebetterindia.com/41251/dr-vishal-rao-affordable-voice-prosthesis/
I've learned that similar device already exists, but it costs much, much more.