Build a Real-Time Auto-Tune Pitch Corrector with Arduino Due

Every component needed to create a voice pitch correction system, pre-tested for compatibility. Comes with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

This kit lets you build a vocal pitch corrector that instantly shifts your voice to the nearest musical note—just like studio auto-tune but running on an Arduino Due in real time. Whether you're experimenting with audio effects for a school project or prototyping a singing robot, you'll gain hands-on experience with microphone input, Fast Fourier Transform (FFT) analysis, and DAC-based audio resynthesis.

What You'll Build

You'll construct a complete signal chain from microphone to speaker. Speak or sing into the MAX4466 electret mic; the Arduino Due samples audio at high speed, detects the fundamental pitch using frequency analysis, calculates the closest semitone, and drives the MCP4725 12-bit DAC to output the corrected waveform through the PAM8403 amplifier to the speaker. The result is a portable, battery-powered auto-tune effect you can demonstrate live.

What You'll Learn

• Apply FFT to extract pitch from audio signals in real time
• Use the MCP4725 DAC to synthesize audio from corrected pitch data
• Interface an electret microphone with gain adjustment (MAX4466)
• Drive a speaker through a class-D amplifier (PAM8403)

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Ideal for CBSE Class 11-12 students exploring physics of sound and signal processing, B.Tech ECE/EEE undergraduates building digital audio projects, and participants in Smart India Hackathon working on assistive voice technologies. ATL Tinkering Labs and engineering clubs at IIT, NIT, VIT, and BITS will find this kit an excellent introduction to real-time DSP.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.