Tools and Techniques of Assistive Technology for Hearing Impaired People

Education is the most important part of every human life that is necessary to go ahead in life and help us to exchange information by speaking, writing, or using some other medium. Lack of hearing power or deafness creates difficulties to speak and understand what others are saying. Assistive technology reduces the stress for hearing-impaired people to communicate with normal people. Assistive devices are categorized as Assistive Listening Devices (ALD), Augmentative and Alternative Communication (AAC) and Alert systems. In this research paper, various tools and techniques based on parameters such as alert systems, speech enhancement, SL recognition and learning applications, Telecommunication systems and speech to text are discussed. Most of the available devices for hearing impaired people, are prototypes and not commercially available.