Stochastic Computation of Gammatone Filter Based Hearing Aid for Impaired People

---------------------------------------------------------------------***--------------------------------------------------------------------Abstract For the people with disabilities, information provided through their own telecommunication devices is indispensable to move. We propose this wireless system to send information to people with disabilities (especially deaf people).The most effective way to compensate hearing loss is to employ a hearing aid system which is an integration of voice amplification, noise reduction, feedback suppression, automatic program switching, environmental adaptation, etc. This project introduces about gammatone filter based upon stochastic computation for area efficient hardware. The gammatone filter well expresses the performance of human auditory peripheral mechanism. This filter has a potential of improving advanced speech communications systems, especially hearing assisting devices and noise robust speech recognition systems. Using the gain-balancing techniques, the computation accuracy at each IIR filter is improved, leading to a high dynamic range.