Electronic conception of a programmable hearing aid

Hearing is the feeling thanks to which, the external world is perceived by the intermediary of specialized sensors, sensitive to the sound vibrations of the air (sound waves). These waves must pass by a whole perception and transmission chain including the outer ear, the middle ear and the inner ear, to arrive finally at the auditive nerve. At each level of this chain, an embarrassment or a rupture generating a situation whose severity can go from light auditive deficiency to major deficiency can be produced. So in the most cases, the port of a hearing aid becomes required. In this paper we are interested in the electronic design of a programmable hearing aid in 0.35 mum MOS technology.