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Design and Development of a Low-Cost Hearing Aid Using Arduino

Authors:

Mohamed Elmogtaba, Adam Hamid Mohamed Elzein, Ibrahim Sami Bukhari Elsir Babiker
Supervisor: Dr. Abdul Razzaq

1. Introduction

Hearing loss affects 466 million people worldwide (WHO). Traditional hearing aids cost $1,000-$4,000, making them inaccessible in developing regions...

2. Methodology

Hardware Components:

Component Specification Cost
Arduino Nano ATmega328P $3.50
MAX9814 Mic 60dB Gain $2.80
PAM8403 Amp 3W Output $1.20
Li-ion Battery 18650 3.7V 2000mAh $2.50

Signal Processing Flow:

Microphone → Analog Read → Noise Filtering (FFT) → Amplification → Audio Output

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