Binaural Room Simulation Engine Kit with ESP32
Build a Real-Time Binaural Room Simulation Engine with ESP32
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Step into the world of 3D audio. This kit lets you build a binaural room simulation engine that applies Head-Related Transfer Functions (HRTFs) in real time on an ESP32, turning two mono audio sources into a convincing surround sound experience. Ideal for audio researchers, VR developers, and musicians exploring spatial audio.
What You'll Build
You assemble a hardware system with dual I2S microphones capturing sound, an ESP32 running custom HRTF convolution, and a stereo amplifier driving two speakers for immersive 3D audio playback. The result is a portable binaural processor that can simulate any virtual listening environment – from front-stage presence to room corner reflections.
What You'll Learn
- Implement real-time convolution algorithms on a microcontroller
- Configure I2S audio peripherals and DMA for low-latency input/output
- Understand HRTF principles and spatial audio cues (ITD, ILD)
- Design and debug mixed-signal audio circuits with DACs and amplifiers
Kit Contents
| Component | Quantity |
|---|---|
| ESP32 Dev Board | 1 |
| INMP441 I2S Mic | 2 |
| MCP4728 DAC | 1 |
| PAM8403 Stereo Amp | 1 |
| 3W 8Ω Speaker | 2 |
| 4.7kΩ Resistors | 5 |
| 100nF Caps | 15 |
| PCB Prototype Board | 3 |
| 3.5mm TRS Jack | 2 |
| 5V 2A PSU | 1 |
| Enclosure Box | 1 |
| Soldering Iron | 1 |
| Solder Wire | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
This kit is aimed at audio engineering researchers, IIT/NIT/VIT/BITS postgraduates building spatial audio prototypes, and professionals developing immersive audio tools for VR/AR. It also suits Smart India Hackathon teams working on real-time audio processing projects.
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.
What if I get stuck during the build?
Open the AI companion via the QR code on the box, describe your issue, and it will walk you through debugging steps. You can also message us on WhatsApp for human support.
Can I connect line-level sources instead of the microphones?
Yes, you can use the 3.5mm TRS jacks to feed line-level stereo signals directly into the ESP32’s ADC or I2S input, bypassing the mics.
How do I load custom HRTF datasets onto the ESP32?
You can flash pre-computed HRIR filters via the Arduino IDE or ESP-IDF; the AI companion provides a template for integrating popular datasets like KEMAR or CIPIC.
What kind of binaural processing performance can I expect from the ESP32?
The ESP32 handles 44.1 kHz stereo HRTF convolution with acceptable latency for real-time playback, though heavy filter lengths may require downsampling to 32 kHz.
Head-Related Transfer Function convolution on ESP32 renders 3D audio positioning from two mono sources.
What's in this kit
- ESP32 Dev Board
- INMP441 I2S Mic x2
- MCP4728 DAC
- PAM8403 Stereo Amp
- 3W 8Ω Speaker x2
- 4.7kΩ Resistors x5
- 100nF Caps x15
- PCB Prototype Board x3
- 3.5mm TRS Jack x2
- 5V 2A PSU
- Enclosure Box
- Soldering Iron
- Solder Wire
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.
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Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items