ESP32 HRTF 3D Audio Recorder Kit - Capture Binaural Sound with Real-Time Spatial Positioning

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

Transform a standard mono microphone array into a full 3D audio capture system. This kit lets you build a dual-INMP441 recorder that runs head-related transfer function (HRTF) convolution directly on an ESP32, outputting binaural audio with realistic azimuth and elevation cues. Ideal for immersive audio projects, VR/AR content creation, or academic research in spatial hearing.

What You'll Build

You'll assemble a battery-powered or mains-operated binaural recorder. Two I2S MEMS microphones feed raw audio to the ESP32, which applies pre-computed HRTF filters in real-time using its dual cores. The processed stereo signal passes through an MCP4728 four-channel DAC into a PAM8403 amplifier driving a pair of 3W speakers or a headphone jack. The result: a portable, programmable spatial audio capture and playback device.

What You'll Learn

• Interfacing I2S microphones (INMP441) with ESP32 and handling high-speed audio streams
• Designing and tuning HRTF convolution kernels on resource-constrained embedded hardware
• Using the MCP4728 I2C DAC to convert processed digital signals into analog audio
• Implementing real-time audio processing with FreeRTOS tasks and DMA buffering

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

This kit targets serious electronics enthusiasts and engineers exploring spatial audio: final-year B.Tech ECE/EEE students working on DSP projects, Smart India Hackathon teams tackling immersive audio challenges, IIT/NIT/BITS researchers prototyping HRTF algorithms, and professional audio engineers building custom binaural recording rigs. If you need to move beyond basic Arduino audio and into real-time convolution, this is your launchpad.

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.