A thorough investigation on designs of digital hearing aid

Hearing loss which looks a very common health issue but affects nearly 10% of the world population as indicated by many international studies. Hearing disorders effectively frail sensitivity to the sounds ordinarily heard. Deafness and speech perception are two different categories of hearing losses. Any Hearing Impaired (HI) person is an applicant of wearing a hearing aid. This paper describes various design techniques and speech enhancement algorithms of Digital Hearing Aids (DHA).