International Science Community Association Research Journal of Engineering Sciences 2278 - 9472 5 6 2016 06 26 Implementation of Digital Hearing and Speech Aid using MATLAB: A Survey 18 20 EN Rani V. 1 Division of Civil Engineering, School of Engineering, CUSAT, Cochin, Kerala, India Sobha Cyrus 2 Division of Civil Engineering, School of Engineering, CUSAT, Cochin, Kerala, India Shanmathiee B. 1 Department of Civil Engineering, Coimbatore Institute of technology, Coimbatore, India Saraswathi R. 2 Department of Civil Engineering, Coimbatore Institute of technology, Coimbatore, India G.K. Monica Nandini 1 Coimbatore Institute of Technology, Coimbatore, Tamilnadu, India Keerthinarayana S. 2 Coimbatore Institute of Technology, Coimbatore, Tamilnadu, India Varalakshmi V.G. 1 Department of Electronics and Telecommunication Engineering, Bhilai Institute of Technology Durg, India Uma K. 2 Department of Electronics and Telecommunication Engineering, Bhilai Institute of Technology Durg, India Nandanwar S.V. 3 Bhilai Steel Plant, Bhilai, CG, India Nikita Ratnani 1 Dept. of Electronics and Telecommunication Engineering, Bhilai Institute of Technology, Bhilai House Durg, CG, India Manisha Sharma 2 Dept. of Electronics and Telecommunication Engineering, Bhilai Institute of Technology, Bhilai House Durg, CG, India > Mini Review Paper 2016 2 24 2016 06 26 The analog hearing aids can be tuned and adjusted for volume, bass and treble. Hence they are similar to a simple radio. The digital technology filters the signals in such a way that it allows the speech signals while filters out the background noise. Thus, the digital hearing aids offer various advantages over analog hearing aids through the use of digital signal processing. Thus the implementation of digital hearing aid using MATLAB includes noise reduction filter, frequency shaping function and amplitude compression function. The inability to produce the normal speech is referred as speech impairment. There are various types of speech disorders in which dysarthria refers to that type of disorder in which there is difficulty in production of normal speech. The prototype system senses the vocal chord vibrations which are then amplified. Then the spoken word will be displayed in MATLAB programming language. In this, the digital hearing and speech aid implementation is to be done using MATLAB programming language. Thus, the system is a blend of hardware and software. Thus with this system, the basic needs of impaired people can be understood. Copyright@ International Science Community Association