Real-Time Acoustic Echo Canceller Kit with ESP32 – Implement Professional-Grade Echo Cancellation

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

Imagine a speakerphone that extracts your voice clearly while silencing the far‑end echo blasting from its own speaker. This kit lets you build exactly that: an acoustic echo canceller (AEC) that captures room audio with two high‑precision INMP441 I2S MEMS microphones, runs an NLMS adaptive filter on an ESP32 in real time, and outputs a clean near‑end signal free of acoustic feedback. The project integrates real‑time DSP theory with embedded C/C++ code, transforming a lab‑grade algorithm into a working prototype you can hold in your hands.

What You'll Build

A complete dual‑microphone echo cancellation system. One mic picks up the room’s acoustic mix (echo + speech), while the second captures only the speaker’s output. The ESP32 executes a sample‑by‑sample NLMS algorithm that continuously adapts to room acoustics and removes the echo with sub‑millisecond latency. The cleaned audio is routed through a MCP4728 quad‑output DAC to headphones or line‑level devices via a 3.5mm TRS jack, giving you a prototype ready for noise‑cancelling speakerphones, conference systems, or voice‑controlled appliances.

What You'll Learn

• Implement an NLMS adaptive filter from scratch on a microcontroller, understanding step‑size tuning and convergence.
• Synchronise dual I2S INMP441 microphones for simultaneous, phase‑aligned audio acquisition.
• Drive a high‑resolution MCP4728 DAC with 12‑bit precision for analog output and seamless integration with amplifiers.
• Design a complete DSP pipeline that runs continuously on a 240 MHz ESP32, including DMA buffering and I2S driver configuration.

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This advanced kit is tailored for final‑year B.Tech ECE/EEE projects, M.Tech DSP research, and professional engineers prototyping audio communication systems. It’s an ideal choice for Smart India Hackathon teams tackling real‑time audio problems or for students at IITs, NITs, VIT, and BITS Pilani who need a fully documented, functional AEC platform. If you already understand the basics of C programming and have some exposure to signals and systems, this kit bridges the gap between theory and a deployable prototype.

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.

Choose your assembly option:

• Soldering Kit — 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
• Breadboard Combo — 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.