Sign up for
Participate with your entry in one of our professional or student awards.Sign up for an award
You are using an outdated browser. Please upgrade your browser to improve your experience.
Hearing-impaired is a partial or total inability to hear. In children it may affect the development of language and can cause work related difficulties for adults. This device take advantage of the theory of vocal cords' vibration to teach the hearing-impaired child to speak.