Design and Implementation of Smart Non-Invasive Bone Conduction Ear-Plug System

Received Oct 9, 2017 Revised Dec 25, 2017 Accepted Jan 10, 2018 The project aim is to design a smart earplug system integrated with noninvasive bone conduction technique which is capable of doing some advanced audio processing to provide voice enhancing, noise filtered audio for the hearing impaired people [2]. The system is also designed to work as an embedded music player, a life activity tracker and a Smartphone companion. It can even read the SMS that is just received on your smartphone into your ear. This project needs a very low power microcontroller but with high-performance signal processing requirements. STM32L476 from STMicroelectronics meets this needs and thus chosen as the main MCU. It is an ultra-low power ARM Cortex-M4 based microcontroller that can run up to 80MHz. It has got 1MB of Flash memory and 128 KB RAM.