To treat a patient they use

► Adaptive communication switches like infrared switches, sound switches, touch switches, etc.

► Sound measuring apparatus like an ECG or laryngograph

► Stroboscopes

► Computer and tablet and the whole lot of app to treat speech impaired patient

► Therapeutic voice synthesizers and augmentative communication devices

► Various software likes speech analysis software, language analysis software and signal analysis software

► Medical devices like multi-speech device KayPENTAX, video voice, text to speech, etc.