Biometric Feedback Controller for Stress Reduction

// Description

This project implements a closed-loop negative feedback system designed to reduce an individual's stress in real time. A heart rate sensor feeds live biometric data into a Raspberry Pi, which processes heart rate and heart rate variability (HRV) and uses MATLAB libraries to dynamically modulate audio output — adjusting pitch, volume, and tempo through a speaker to guide the user toward a calmer physiological state. The system continuously monitors the user's response and adapts the audio signal accordingly, closing the feedback loop. The goal was to apply control systems theory to a real-world biofeedback application, demonstrating how hardware and signal processing can work together to influence human stress response.

// Skills Used