Designe An Electrical System for Adjustable Hearing Aid Based on Smartphone
Keywords:Smartphone application, PGA (Programmable Gain Amplifier), adjustable hearing aid, Bluetooth module, Arduino Nano.
In this project we have designed an adjustable hearing aid by using android smartphone application
via Bluetooth connection for controlling the amplification process. Arduino Nano is used to execute all
commands and HC-06 Bluetooth module is used in this system. The Bluetooth connection transmit the data
to Arduino to provide digital outputs to the programmable gain amplifiers (PGA) and outputs the tone during
the tuning state. The final constructed hearing aid’s device was experimented on different set of people with
different hearing loss degree .The final test showed that the device could improve the hearing for people with
partial hearing problems.