Low-cost hearing aid using Mobile App and Bluetooth headsets
Mohana Bhuvanagiri, Srikar Bhuvanagiri · 2023
As humans age, one of the major problems that many face is loss of hearing. Good hearing aids in the market are expensive, ranging from hundreds to thousands of dollars, making them inaccessible for most people. To make hearing aids more affordable, we are using a mobile app and a Bluetooth headset to perform the functions of a hearing aid. The Microphone in the mobile phone picks up audio, analyzes it, and converts it into frequency bands. It will apply the gain of the frequency bands based on the user’s audiometry graph. The gain in each frequency band is adjusted to avoid saturation. The resultant frequencies are synthesized and played back on the Bluetooth Headset the user. The user of the app is given control to increase the volume based on their ambient noise. The entire process should happen within 40 milli-seconds to avoid losing lip synchronization.