16 year-old student from India has created a device that converts breath to speech. It is designed for people with movement and speech impairments like ALS or Parkinson’s. The device is named TALK, that what it does, and it costs only $80.
TALK is based on Arduino microcontroller and uses a MEMS microphone positioned under the nose. The sensitive microphone consist of pressure sensitive diaphragms. This gives the system sensitivity to detect the difference between a short and long breath and arduino microcontroller interprets them as dots and dashes in Morse code.
The main advantage of TALK, that it is cheap, compared with other specialized computer systems.