Design of GSM based Voice Data Processing Using Bone Conduction Principle

Abstract

(PIC16F877A) PIC Microcontroller based digital electronic system to allow deaf
people to hear the sounds via bone conduction by wearing an intra-oral device and a small
microphone in the deaf ear to regain lost hearing. This device consists of GSM modem, PIC
microcontroller and audio amplifier unit. GSM modem will receive the incoming calls and
answer the calls automatically Via AT commands. The incoming voice signal converted in to
low frequency vibration signals that is fed through the teeth to the cochlea via bone
conduction. The system is implemented by PIC midrange controller based hardware and
low cost GSM module, which makes it economic, reliable and efficient. It is the world’s first
removable and non-surgical hearing solution to use the Well-established principle of bone
conduction to imperceptibly transmit sound via the teeth. It is simple, Removable, and very
Non-Invasive. This hearing device is designed to use the natural amplification of your ear.
Any sound in that that coming from GSM Modem. It uses a digital processor (PIC16F877A)
to transmit to the sound to a piezoelectric actuator, which needs very little power to
generate the vibrations that travel through bone, which in turn sends those sound
vibrations into your cochlea through your teeth. This way, the sound is transported from
your impaired ear directly to your hearing ear this hearing device is a flat piece that
contains a sealed rechargeable battery, and electronics and wireless capabilities that can
pick up sound transmissions from the behind-the-ear microphone