Digital Hearing Aid –A Review

Abstract: In the rural sector of India there is a large number of hearing impaired persons. With moderate or acute hearing loss Hearing impaired persons, suffer from opportunities for communicating with others Presently the conventional analog hearing aids have a number of functional limitations such as fixed frequency, lack of flexibility, can’t distinguish speech from noise, etc. The Digital hearing aid can solve these problems. This device is fully programmable having features like Wide Dynamic Range Compression, Feedback Suppression, and Adaptive Noise Cancellation.

Keyword: Digital signal processing, noise suppression, dynamic range compression.