Low Cost Cochlear Implant 2019-20

Around the world today there are millions of people with severe or total hearing loss. These people can live out fairly normal lives and form connections with other people. However, they are missing out on a key portion of communication, which is the ability to hear and speak. Currently, 325,000 people have been implanted with cochlear hearing implants. The reason that more people haven't been implanted is largely due to the cost. It can cost $30,000 to $50,000 without insurance to get the implant. In 1961 Dr. William House implanted one of the world's first cochlear implants, a surgically inserted device that can give hearing to individuals with sensorineural hearing loss through direct stimulation of the auditory nerve. Dr. House's implant was a single electrode device, which stimulates the nerve in one location. Modern cochlear implants adopt a multi-electrode approach, stimulating different regions of the nerve to resolve different frequencies of speech. The goal of this project is to design a cochlear implant that utilizes only one electrode, which reduces the overall cost of the implant. The single electrode implant hasn't been worked on since the 1970's, so we aim to improve the design by taking advantage of modern technologies like microcontrollers and faster filtering techniques.

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Artifacts

Name Description
Block Diagram A simplified version of the project block diagram.   Download
User Interface Created in MATLAB in order to streamline process of selection of audio file and carrier frequency for research purposes.   Download
Signal Generator Creates 10 .wav audio files with frequencies varying from 800 Hz to 20 kHZ.   Download
PCB Schematic and PCB Layout (Unpoured) This includes the schematics of the PCB and the layout. The layout is in 2D and 3D, but doesn't include the poured GND top layer, so that the routing is easily visible.   Download
PCB Layout with Poured GND The PCB layout with the poured GND layer. If some traces aren't easily visible refer to the document above.   Download
Website Website with project documents and details.   Link
Online File Repository A Google Drive Folder of the artifacts above.   Link
Engineering Requirements Initial Requirements established for this project.   Link
Project Summary Video A video summarizing the project process and results.   Link